User manual KYOCERA KM-2030

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Electronics for Imaging 303 Velocity Way Foster City, CA 94404 Contents Introduction Basics of color management Controlling printed color Maintaining printer consistency Printer gamut Color conversion xi xii xiii xiv xv Chapter 1: Simple and Advanced Workflows Workflow concepts Short-run printing versus color proofing RGB, CMYK, and spot colors Desktop versus ColorWise color management Simple workflows Select your colors wisely Select a short workflow Advanced workflows Short-run printing examples Color proofing examples 1-1 1-1 1-2 1-2 1-3 1-4 1-4 1-8 1-8 1-14 Chapter 2: Working with Color in Applications Working with color Color reference pages Office applications Choosing colors in office applications PostScript applications Choosing colors in PostScript applications Default output profile CMYK simulation 2-1 2-2 2-3 2-4 2-5 2-6 2-8 2-8 viii Contents Chapter 3: Office Applications Working with office applications Defining colors Working with imported files Selecting options when printing Output profiles 3-1 3-1 3-1 3-2 3-2 Chapter 4: Adobe Photoshop Creating a monitor profile Specifying color settings Photoshop 6.x color settings Photoshop 5.x color settings Saving files Saving files from Photoshop 6.x or 5.x Advanced tips for using PostScript color management Defining colors Selecting options when printing Advanced tips for printing with Photoshop PostScript color management 4-1 4-2 4-3 4-5 4-9 4-9 4-12 4-13 4-13 4-15 Chapter 5: Page Layout Applications Working with page layout applications Defining colors Importing images CMYK simulation Adobe InDesign 1.5.2 InDesign color settings Importing images Selecting options when printing Adobe PageMaker 7.x and 6.5 for Mac OS and Windows PageMaker color settings Windows version requirement Importing images 5-1 5-1 5-2 5-3 5-3 5-3 5-4 5-5 5-7 5-7 5-8 5-8 ix Contents Selecting options when printing Optional Color Management from PageMaker QuarkXPress 4.x for Mac OS and Windows Importing images Selecting options when printing Optional Color Management from QuarkXPress QuarkXPress 3.32 for Mac OS and Windows Windows version requirement Importing images Selecting options when printing 5-9 5-10 5-10 5-10 5-11 5-12 5-12 5-13 5-13 5-13 Chapter 6: Illustration Applications Working with illustration applications Defining colors Importing images CMYK simulation Adobe Illustrator for Windows and Mac OS Illustrator 9.x color settings Specifying print options Illustrator 8.x color settings Specifying print options Saving files for importing into other documents FreeHand 9.x and 8.x for Windows and Mac OS FreeHand color settings Defining colors Importing images Saving files for importing into other documents Optional color management in FreeHand CorelDRAW for Windows and Mac OS Defining colors Importing images Specifying print options Saving files for importing into other documents Optional color management in CorelDRAW 6-1 6-1 6-2 6-3 6-3 6-3 6-4 6-6 6-7 6-8 6-9 6-9 6-10 6-10 6-12 6-12 6-13 6-13 6-13 6-14 6-16 6-16 x Contents Appendix A: Desktop Color Primer The properties of color The physics of color CIE color model Hue, saturation, and brightness Additive and subtractive color systems Printing techniques Halftone and continuous tone devices Using color effectively A few rules of thumb Color wheel Color and text Raster images and vector graphics Optimizing files for processing and printing Resolution of raster images Scaling A-1 A-1 A-3 A-4 A-5 A-9 A-9 A-10 A-11 A-11 A-13 A-14 A-16 A-16 A-18 Glossary Bibliography Index xi Basics of color management Introduction This manual introduces the concepts and issues associated with printing to the Color ServerTM. It outlines key workflow scenarios and provides application notes that explain how to print to the Color Server from popular Microsoft Windows and Apple Mac OS applications. This reference guide also provides basic background information on color theory and color management. The Glossary at the back of this manual defines terms and concepts--for example, output profile--that appear throughout this manual. Color terms and concepts such as "RGB data," "color space," "spot color," "gamut," and "source profile" are used throughout this manual. If you are new to desktop color, or if any terms are unfamiliar, check the Glossary. NOTE: The term "printer" is used throughout this manual to denote a supported printer or copier. The term "toner" in this manual refers to either toner or ink. Basics of color management The past several years have seen progress toward standardization in the field of digital color management systems. Both the Windows and Mac OS operating systems now support an industry standard format developed by the International Color Consortium (ICC). This ICC format is implemented on Windows computers in Image Color Matching (ICM) and on Mac OS computers in ColorSync. More and more software developers are also incorporating color management systems into high-end applications. The Color Server color management system, ColorWise®, supports this standard profile format. A color management system (CMS) is a "translator" between the color space of the source image (for example, the monitor or a scanner) and the color space of the printer. The CMS uses a device-independent color space, such as CIELAB, as its intermediate color space. To perform its translation, the CMS needs information about the color space of the source image and the gamut of the printer. This information is provided in the form of profiles, often created by the makers of the computer monitor or printer. The end product of a CMS conversion is a printed document or an image file in the gamut of a particular printer. xii Introduction NOTE: If color matching between your monitor and printed output is critical, calibrate your monitor, as well as your Color Server. For most users, predictability of printed color output is adequate and monitor calibration is not necessary. For information on monitor calibration, see your Adobe Photoshop or Adobe Illustrator documentation. The following section provides information on controlling and managing color output in order to achieve predictable color results. It also discusses the basics of color management. Controlling printed color When working with color materials, whether they are presentations, illustrations, or complicated page designs, you make aesthetic decisions about the colors you use. Once you have decided on your goal, you must make the best use of the capabilities of your Color Server to realize your design in print. Your color printing system becomes an ally in this creative process to the extent that results are predictable. · If you designed a poster to print on the Color Server, you want the printed colors to match the design specification. · If you are printing presentations on the Color Server, you want to preserve the vivid colors you see on your monitor. · If you are working with color that will be printed on an offset press, you want the Color Server output to match other prepress proofs or PANTONE color swatch books. The type of print job and the final output device--Color Server or offset press-- determine the workflow you should use to achieve the best results. No matter what your goals are, two factors always impact color print output: printer consistency and the range of colors the printer can print, known as its gamut. These concepts are covered briefly in this chapter. Creating successful color documents and presentations also requires an understanding of color management software as it is implemented by the Color Server and on your desktop computer. Most of this chapter is devoted to discussing the various elements of color management that contribute to predictable color results. xiii Basics of color management Maintaining printer consistency The factors described in the following sections affect printer consistency, as well as color fidelity and overall output quality. Paper stock and toner The paper and toner used by your printer can affect printed color. For best results, use the supplies recommended by the manufacturer of the printer. Maintenance Problems such as streaking and insufficient or excessive amounts of one or more toners arise when a printer does not receive periodic maintenance or needs major repairs. In addition to having it serviced regularly, monitor the condition of your printer by making standard test prints at regular intervals. You can do this easily by printing the Color Server Test Page. Save the prints and show them to the service technician whenever output densities vary from the norm or other problems appear. Calibration Output from color printers is subject to changes in temperature and humidity, and is prone to drift over time, with a resulting loss in color predictability. For this reason, regular service visits alone do not guarantee consistent results from a printer. Where color accuracy and consistency are crucial, regular calibration of the Color Server and printer is necessary. Calibration generates transfer curves that adjust for the difference between the actual toner densities (measurements) of the print device and the response expected by the output profile. These transfer curves are stored on the Color Server and used in association with output profiles to produce color output that accounts for the unique toner characteristics of the printer. For information on performing calibration of the Color Server, see the Color Guide. xiv Introduction Printer gamut Different color reproduction techniques have different color capabilities, or gamuts. Color transparency films have comparatively large gamuts, as do color monitors. The color gamut that can be produced using process inks or CMYK toners on paper is smaller. This is why some colors that can be displayed on a color monitor, especially bright saturated colors, cannot be reproduced exactly by your Color Server--nor, for that matter, can they be reproduced on a press using process colors. Moreover, different printers have different gamuts--some colors your printer can produce cannot be reproduced on an offset press, and vice versa. The following figure illustrates this concept of differing gamuts. Color transparency film RGB monitor Offset press (white) Other print device You must account for the gamut of your printer when designing on a color monitor. When printed, colors that fall outside the printer gamut are "mapped" to printable colors. This process, referred to as gamut mapping, takes place when color data is converted or adjusted to meet the gamut requirements of a printer. The Color Server is specially designed to perform gamut mapping at high speed with high-quality results. It provides these color management features automatically, using either built-in default settings or settings you select for a particular print job. For added flexibility, you can also use the Color Server color management system in combination with the color management systems on Windows and Mac OS computers. xv Basics of color management Color conversion Before you can print a color document, the color data in it must be converted to the gamut of the printer. Whether performed by the Color Server or a host-based CMS, the process of converting color data for a printer is the same: the CMS interprets RGB image data according to a specified source profile and adjusts both RGB and CMYK data according to a specified output profile, also called a destination profile by some color management systems. Color management system Source profile Output profile Device-independent color space Input data Printed data or file The source profile defines the RGB color space of the image's source--characteristics such as the white point, gamma, and type of phosphors used. The output profile defines the gamut of an output device, such as a printer. The Color Server (or the host-based CMS) uses a device-independent color space to translate between the source color space and the color space of the output device. The Color Server allows you to specify default and override settings for the source color space information and the output profile information (see the Color Guide). When you use these settings, you do not need to use the features of other color management systems. Your Color Server software includes ICC profiles for use with other color management systems, if you choose to use them, although conflicts may arise when the Color Server CMS is used in conjunction with a host CMS. You can also use color management systems to adjust color data to the gamut of an output device other than the one to which you are printing. This process of simulating another output device is commonly used for proofing jobs that will print on an offset press. The Color Server simulation feature is described in the Color Guide. 1 Chapter 1: Simple and Advanced Workflows 1-1 Workflow concepts This chapter discusses color management workflows used in short-run color printing, as well as color proofing on the Color Server. It also gives examples of color management in specific desktop applications and discusses the interaction between those applications and ColorWise color management. Workflow concepts The term "workflow" is used to describe the path a job follows from its creation in a desktop application to final printed output. It is helpful to think of the following factors when describing workflows: · Short-run printing versus color proofing for eventual output on an offset press · RGB, CMYK, and spot color systems · Desktop color management within an application versus color management on the Color Server, along with the notion that different versions of desktop applications handle color management differently. NOTE: It is important to pay close attention to the version of a particular application when considering the workflows in this chapter. Short-run printing versus color proofing Short-run color printing refers to those jobs for which the Color Server is the final print device. Printing jobs to the Color Server in preparation for printing on an offset press is referred to as color proofing. Both types of Color Server print jobs use RGB, CMYK, and spot colors. · For short-run jobs, bright, saturated colors are often desirable. These are achieved by using the full range of colors available, referred to as the full gamut of the printer or, more simply, device CMYK. For short-run printing examples, see "Advanced workflows" on page 1-8. · Offset jobs proofed on the Color Server require the printed colors to match those from another set of CMYK printing conditions. Colors that are specified for an offset press require CMYK simulation that is optimized for proofing on the printer. For color proofing examples that simulate the gamut of another digital printer or press standard, see "Advanced workflows" on page 1-8. 1 1-2 Simple and Advanced Workflows RGB, CMYK, and spot colors Colors can be defined in several different color models, the most common being RGB, CMYK, and the spot color matching system. Each model requires a different color conversion at the Color Server. These different color conversion workflows are as follows: · RGB source profiles and color rendering dictionaries (CRDs) are used to map RGB colors through a device-independent color space to a destination space, either the full device gamut in a short-run printing workflow or CMYK simulation in a color proofing workflow. · CMYK colors are device-dependent. In a proofing scenario, colors specified in prepress applications are adjusted so that the gamut of the printer simulates that of the press. In a short-run printing workflow, specifying CMYK colors according to the calibrated Color Server output eliminates the need for simulation during printing. · Spot colors, such as PANTONE, are special inks manufactured to run on an offset printing press. Spot colors can be simulated using CMYK toners or process color inks. Two basic workflows exist for printing spot colors to the Color Server: Spot Color Matching On uses color tables built in the Color Server to simulate the spot color with its closest CMYK equivalent. Spot Color Matching Off instructs the Color Server to simulate the spot color using CMYK equivalents defined by the spot color manufacturer. These are the same CMYK values used by applications that include spot color libraries. This CMYK combination is then printed with the CMYK Simulation setting you choose, such as SWOP or DIC. Desktop versus ColorWise color management A desktop color management system uses ICC profiles to convert colors from one device gamut to another (see Appendix A). The color data is converted when it is passed from one application to another or when the job is sent to the printer; thus, the processing occurs on your computer, as opposed to the Color Server. 1 1-3 Simple workflows Using ColorWise color management over desktop color management relieves your computer from having to perform additional processing. Delaying color conversions until the color data reaches the Color Server frees your computer so you can continue working, and color conversions on the Color Server are, in most cases, much faster than similar conversions on a host computer. Managing most or all of your color on the Color Server can also eliminate the potential for undesirable color management-related conflicts, such as iterative color conversions and inconsistent color. The Color Server applies global corrections to specific groups of RGB, CMYK, and spot colors to avoid such conflicts. Finally, by sending RGB files instead of larger CMYK files from applications to the Color Server, network traffic is minimized and jobs generally print faster. ColorWise uses ICC profiles to convert colors to the device gamut or simulate other devices, such as an offset printing press. ColorWise manages color conversions for all users printing to the Color Server from Windows and Mac OS computers. It allows users to follow a simple workflow with minimal intervention using robust default settings, while giving advanced users the control and precision they need. The Color Server can intelligently manage the printed appearance of RGB, CMYK, and spot colors. You can let the Color Server manage color for most short-run color printing jobs without adjusting any settings. Simple workflows Every time you print a document containing colors that were not chosen for your specific device, those colors must be converted, which requires color management. You can define or modify colors at any stage in the workflow. Since ColorWise is compatible with most other color management systems, you can use the workflow most familiar to you. 1 1-4 Simple and Advanced Workflows Select your colors wisely For the colors you see on your monitor to match those on your printed output, they must go through color management, including precise calibration of your monitor and Color Server. If you are not equipped or inclined to maintain accurate monitor color management, you can opt for an easier approach. Determine which is more important to you--printed colors or monitor-displayed colors. If displayed colors are more important, trust your eyes and your monitor. Visually select colors on your monitor, but be aware that colors will be optimized only for your monitor. When the document is opened on other monitors, the colors may look different. And even though printed colors may not match those on your monitor, they will still print to the Color Server with good results. If printed colors are your priority, choose colors from printed samples. By using sample colors, you ensure your printed output remains consistent, regardless of how the colors appear on different monitors. Print the palette of available colors from business applications and select colors from the printed samples. Color reference files are included on the User Software CD (see page 2-2). You can also print color charts from the Control Panel and select colors by name or number from the printed samples. Advanced applications allow you to define colors in the easier-to-control spot and CMYK color spaces. For more advice on color selection, see Chapter 2. NOTE: No matter which workflow most closely matches your own, calibrate your Color Server regularly (see the Color Guide). Select a short workflow Every time colors are converted, performance and color accuracy are affected. Therefore, a workflow with a minimum number of steps minimizes the risk of error. Workflow 1 using ColorWise calibration--minimal workflow A minimal color workflow requires that you calibrate the Color Server. Select from printed colors, as described earlier, and set the CMYK Simulation option to None, since simulation is not necessary when colors are already defined using CMYK values optimized for your calibrated Color Server. 1 Application CMS 1-5 Simple workflows NOTE: CMYK Simulation set to None is also useful when you want to prepare an output profile of your calibrated Color Server or when you use less efficient color management from the desktop (such as ColorSync or ICM). In this workflow, colors are modified only at the calibration stage, as indicated by the black box in the following diagram. Workflow 1--Colors you define in an application Colors output from the Color Server File format Printer driver ColorWise CMS ColorWise calibration While this workflow lends some control over the color quality produced by the Color Server, consider additional ColorWise color management, as described in the following section. Workflow 2 using ColorWise color management--standard workflow The Color Server is highly optimized for the specific printer it supports, and ColorWise addresses many issues unique to your printer, including screens, individual toner response, interactions among toners, natural smoothness of blends, and the capability to render spot and custom colors. The Color Server distinguishes text and graphics from image elements, so the black channel information is preserved while parameters used for CMYK color separations are maintained. Conventional color management systems typically address only color conversions, and they occupy your computer processor. When you use ColorWise, jobs leave your computer faster to be processed more quickly on the Color Server. The recommended standard color workflow (indicated by the black boxes in the following diagram) uses ColorWise calibration and color management. Workflow 2--Colors you define in an application Colors output from the Color Server Application CMS File format Printer driver ColorWise CMS ColorWise calibration 1 1-6 Simple and Advanced Workflows The Color Server comes into play near the end of the color workflow. To ensure the colors you selected reach the Color Server and ColorWise in a usable form, bypass any color management from applications and printer drivers. Keep in mind, however, that ColorWise fully supports color management from applications and printer drivers (see "Advanced workflows" on page 1-8). You must print with the CMYK Simulation print option set to match the CMYK color space used in the application to select the colors. Any CMYK Simulation setting (except Match Copy) applies calibration, so the response of the printer will appear to be stable. The recommended values for CMYK Simulation are SWOP in the U.S., Euroscale in Europe, and DIC in Japan--choices that respect the color standard for each region. If colors have been selected specifically for your calibrated Color Server, set CMYK Simulation to None. For a list and descriptions of ColorWise print options that affect CMYK, RGB, spot, and other colors, see the Color Guide. Workflow 3 bypassing ColorWise--not recommended Bypassing ColorWise color management, while a possibility, is not a recommended workflow. When you bypass ColorWise, you must choose colors using only CMYK formulas designed specifically for your printer, and you must print with the CMYK Simulation option set to Match Copy, if it is available for your Color Server. The Color Server still prints pages using your PostScript files, and drives your printer and its accessories, but it does not perform CMYK color transformation, nor does it consider calibration data. Calibration is necessary for consistent output, since the color response from your printer varies significantly depending on wear, heat, humidity, and service. 1 Application CMS 1-7 Simple workflows The following diagram indicates that no modifications are made to colors in this workflow. Workflow 3--Colors you define in an application Colors output from the Color Server File format Printer driver ColorWise CMS ColorWise calibration Turn off color management in your application Generally, when printing to the Color Server, it is best to disable color management in the application to ensure the Color Server receives color data properly and prints it accurately. Save your files using color-safe settings You can take the following additional steps to ensure color accuracy. · When saving EPS files, do not include PostScript Color Management information. This minimizes the risk of conflicting data and multiple color conversions. PostScript Color Management causes your CMYK and RGB colors to be interpreted by the Color Server as though they were supplied in the Lab color space and, as a result, processed by CRDs, rather than your simulation settings. · Include ICC color information in files. ColorWise does not conflict with this information, and such data is useful for identifying the specific color space used by your files. · Do not include halftone and transfer functions. · Turn off color management in the printer driver. On Windows computers, if the printer driver offers Image Color Matching options, select Printer Image Color Matching. On Mac OS computers, set the printer driver to include no color management commands at print time (see the Color Guide). 1 1-8 Simple and Advanced Workflows Advanced workflows The following sections present advanced color management workflow examples for three short-run printing and three color proofing situations. Each workflow example consists of a brief description, steps for creating and manipulating the files, a list of the ColorWise settings used in the example, and a table that summarizes the workflow. NOTE: These examples reference specific software applications that illustrate image editing, illustration, page layout, and business/office applications--Adobe Photoshop, Adobe Illustrator, QuarkXPress, and Microsoft PowerPoint, respectively. Short-run printing examples The following examples illustrate short-run printing on the Color Server. Photoshop RGB workflow This short-run workflow of printing an RGB image from Photoshop is one of the simplest color workflows. In it, RGB data is sent from the application, through the printer driver, to the Color Server. The RGB-to-CMYK conversion takes place on the Color Server using a CRD rather than the application. Use the settings illustrated in this workflow for printing photographs and artwork. This document could be created as follows: · Create an RGB image in Photoshop. · Print the file directly to the Color Server. For recommended print settings from Photoshop, see Chapter 4. · Use ColorWise to convert the RGB image to device CMYK (the full gamut of the printer). 1 1-9 Advanced workflows The ColorWise settings used in this example are: · RGB Source Profile set to EFIRGB or another RGB source definition · Rendering Style set to Photographic · RGB Separation set to Output The following diagram indicates the steps for this particular workflow in black. Photoshop RGB workflow Photoshop Printer driver ColorWise print options Define RGB Source Select RGB Source: None Select Rendering Style (CRD) Select RGB Separation: Output Select RGB Separation: Simulation Convert Press CMYK to Press Sim. Convert Press CMYK to Custom Sim. Select Device CMYK Sim.: None Read Embedded Profiles Define RGB Source Embed Source Profiles Convert RGB to CMYK Convert CMYK to CMYK Select RGB Mode Select CMYK Mode Select Destination Profile Save as TIFF Save as EPS Save as JPEG Print (Mac OS-Only) Black and White Color/Grayscale ColorSync Color Matching PostScript Color Matching Turn Spot Color Matching On Turn Spot Color Matching Off Select Output Profile Select Custom Output Profile 1 1-10 Simple and Advanced Workflows Photoshop RGB with Illustrator and QuarkXPress CMYK and spot colors This workflow involves short-run printing of a complex page layout with images saved in Photoshop, illustrations created in Illustrator, and spot colors. A Photoshop image is saved in an RGB color space using the EPS file format. Illustrator artwork contains objects defined as CMYK and as spot colors selected from printed output, and they are saved using the Illustrator EPS file format. After all the individual objects are imported into QuarkXPress, additional design elements in QuarkXPress are colored using CMYK process colors or spot colors. Use the settings illustrated in this workflow for printing brochures, newsletters, and other layouts. NOTE: When you place CMYK colors in a document, select them from printed output (see page 1-4). This document could be created as follows: · Create an RGB image in Photoshop and save it as Photoshop EPS. · Create a graphic in Illustrator using CMYK and spot colors and save as Illustrator EPS. · Use CMYK colors and a spot color in a QuarkXPress document. · Import the Illustrator EPS into QuarkXPress and place the Photoshop EPS image. · Print the QuarkXPress document to the Color Server. · Use ColorWise to convert the RGB image to device CMYK, adjust the process colors for short-run printing, and match the spot colors using the full device gamut. 1 Photoshop 1-11 Advanced workflows The ColorWise settings used in this example are: · RGB Source Profile set to EFIRGB or another RGB source definition · Rendering Style set to Photographic · RGB Separation set to Output · CMYK Simulation set to None · Spot Color Matching set to On The following diagram indicates the steps for this particular workflow in black. Photoshop RGB workflow with Illustrator, QuarkXPress CMYK, and spot colors Illustrator QuarkXPress Printer driver ColorWise print options Define RGB Source Select RGB Source: None Select Rendering Style (CRD) Select RGB Separation: Output Select RGB Separation: Simulation Convert Press CMYK to Press Sim. Convert Press CMYK to Custom Sim. Read Embedded Profiles Read Embedded Profile Define RGB Source Define RGB Colors Embed Source Profiles Define CMYK Colors Convert RGB to CMYK Define spot Colors Convert CMYK to CMYK Convert RGB to CMYK Select RGB Mode Convert spot to CMYK Select CMYK Mode Embed Source Profile Select Destination Profile Select Destination Profile Save as TIFF Export as TIFF Save as EPS Save as EPS Save as JPEG Print Print Read Embedded Profile Define RGB Colors Define CMYK Colors Define spot Colors Convert RGB to CMYK Convert CMYK to CMYK Convert spot to CMYK Embed Source Profile Select Destination Profile Export as TIFF Save as EPS Print (Mac OS-Only) Black and White Color/Grayscale ColorSync Color Matching PostScript Color Matching Select Device CMYK Simulation: None Turn Spot Color Matching On Turn Spot Color Matching Off Select Output Profile Select Custom Output Profile 1 1-12 Simple and Advanced Workflows Photoshop RGB with Illustrator CMYK and spot colors and PowerPoint RGB This workflow involves short-run printing of a complex presentation document with images saved in Photoshop, illustrations created in Illustrator, and spot colors. All elements are imported into PowerPoint for output. This document could be created as follows: · Create an RGB image in Photoshop and save it as Photoshop EPS. · Create a graphic in Illustrator using CMYK colors and a spot color and save as Illustrator EPS. · Create a presentation in PowerPoint using RGB colors. · Import the Illustrator EPS graphic into the PowerPoint presentation and place the Photoshop EPS image. · Print the PowerPoint document to the Color Server. · Use ColorWise to convert the PowerPoint RGB colors and Photoshop RGB image to device CMYK, adjust the process colors for more saturated short-run printing, and match the spot colors using the full device gamut. 1 Photoshop 1-13 Advanced workflows The ColorWise settings used in this example are: · RGB Source Profile set to EFIRGB or another RGB source definition · Rendering Style set to Presentation · RGB Separation set to Output · CMYK Simulation set to None · Spot Color Matching set to On The following diagram indicates the steps for this particular workflow in black. Photoshop RGB and Illustrator CMYK and spot colors in PowerPoint RGB workflow Illustrator PowerPoint Printer driver ColorWise print options Define RGB Source Select RGB Source: None Select Rendering Style (CRD) Select RGB Separation: Output Select RGB Separation: Simulation Convert Press CMYK to Press Sim. Convert Press CMYK to Custom Sim. Select Device CMYK Simulation: None Read Embedded Profiles Read Embedded Profile Define RGB Source Define RGB Colors Embed Source Profiles Define CMYK Colors Convert RGB to CMYK Define spot colors Convert CMYK to CMYK Convert RGB to CMYK Select RGB Mode Convert spot to CMYK Select CMYK Mode Embed Source Profile Select Destination Profile Select Destination Profile Save as TIFF Export as TIFF Save as EPS Save as EPS Save as JPEG Print Print Define RGB Colors Convert CMYK to RGB Print (Mac OS-Only) Black and White Color/Grayscale ColorSync Color Matching PostScript Color Matching Turn Spot Color Matching On Turn Spot Color Matching Off Select Output Profile Select Custom Output Profile 1 1-14 Simple and Advanced Workflows Color proofing examples The following examples illustrate methods for simulating the output from another printing system, such as an offset press. Each of the proofing examples uses an ICC profile to describe the destination color space. While some examples use simulation profiles built into the Color Server, others use ColorWise Pro Tools (see the Color Guide) to download custom ICC output profiles to the Color Server for use as simulation profiles. Photoshop 5.x RGB-to-CMYK conversion using a custom ICC profile This workflow is useful for prepress environments that have integrated ICC color management and profiles for the presses they use. In this example, an image in Photoshop 5.x is converted from RGB to CMYK using the Photoshop ICC color conversion features in the CMYK Setup option. Using the Simulation settings available in ColorWise, the CMYK image is printed to the Color Server, and the output is made to appear as if it were printed on an offset press. For more information on CMYK Setup, see your Photoshop 5.x documentation. This document could be created as follows: · In Photoshop 5.x, set CMYK Model in CMYK Setup to ICC. · In the Profile menu, select an ICC profile for the desired offset press. Click OK. · Open an RGB image. Select Mode >CMYK Color from the Image menu. · Save the image in any file format. · Print directly to the Color Server. · Use ColorWise Pro Tools to select a simulation profile or download a custom ICC profile to the Color Server for use as a CMYK Simulation Profile. 1 1-15 Advanced workflows The ColorWise settings used in this example are: · CMYK Simulation Profile set to the desired press standard or the corresponding custom simulation (Simulation 1-10) if you downloaded your profile with ColorWise Pro Tools · CMYK Simulation Method set to Full (Source GCR) The following diagram indicates the steps for this particular workflow in black. Photoshop RGB-to-CMYK workflow using ICC profile Photoshop 5.x Printer driver ColorWise print options Define RGB Source Select RGB Source: None Select Rendering Style (CRD) Select RGB Separation: Output Select RGB Separation: Simulation Convert Press CMYK to Press Sim. Convert Press CMYK to Custom Sim. Select Device CMYK Simulation: None Read Embedded Profiles Define RGB Source Embed Source Profiles Convert RGB to CMYK Convert CMYK to CMYK Select RGB Mode Select CMYK Mode Select Destination Profile Save as TIFF Save as EPS Save as JPEG Print (Mac OS-Only) Black and White Color/Grayscale ColorSync Color Matching PostScript Color Matching Turn Spot Color Matching On Turn Spot Color Matching Off Select Output Profile Select Custom Output Profile 1 1-16 Simple and Advanced Workflows Photoshop 5.x Built-in RGB-to-CMYK workflow This workflow is useful for prepress environments that have not integrated ICC color management and do not have profiles for the presses they use. In this example, an image is converted from RGB to CMYK using the Photoshop 5.x Built-in color conversion features in the CMYK Setup option. Using the Simulation settings available in ColorWise, the CMYK image is printed to the Color Server, and the output made to appear as if it were printed on an offset press. For more information on CMYK Setup, see your Photoshop 5.x documentation. This document could be created as follows: · Select the Built-in option from CMYK Setup in Photoshop 5.x Color Settings. · Adjust the Ink Options and Separation Options to match your offset press. · Select the Tables option in CMYK Setup and click Save. This saves your settings as a CMYK ICC profile you will later download to the Color Server as a custom simulation profile. · Select the Built-in option in CMYK Setup again and click OK. · Start ColorWise Pro Tools and download your new CMYK ICC profile to the Color Server as a custom Simulation profile. For the Appear in Driver as option in Profile Settings, select Simulation-1. For more information on downloading profiles, see the Color Guide. · Open an RGB image in Photoshop 5.x. Select Mode>CMYK Color from the Image menu. Save the image as Photoshop EPS. · Print the image directly to the Color Server and choose Simulation-1 as the CMYK Simulation Profile setting. 1 1-17 Advanced workflows The ColorWise settings used in this example are: · CMYK Simulation Profile set to Simulation-1 · CMYK Simulation Method set to Full The following diagram indicates the steps for this particular workflow in black. Photoshop5.x RGB-to-CMYK workflow Photoshop 5.x Printer driver ColorWise print options Define RGB Source Select RGB Source: None Select Rendering Style (CRD) Select RGB Separation: Output Select RGB Separation: Simulation Convert Press CMYK to Press Sim. Convert Press CMYK to Custom Sim. Select Device CMYK Simulation: None Turn Spot Color Matching On Turn Spot Color Matching Off Select Output Profile Select Custom Output Profile Read Embedded Profiles Define RGB Source Embed Source Profiles Convert RGB to CMYK Convert CMYK to CMYK Select RGB Mode Select CMYK Mode Select Destination Profile Save as TIFF Save as EPS Save as JPEG Print (Mac OS-Only) Black and White Color/Grayscale ColorSync Color Matching PostScript Color Matching 1 1-18 Simple and Advanced Workflows Photoshop RGB and QuarkXPress CMYK This workflow exemplifies the use of the RGB Separation feature of ColorWise. An RGB image, originally saved in Photoshop, is printed to the Color Server from QuarkXPress. To simulate how the RGB image would print on an offset press, the RGB Separation feature of ColorWise is set to Simulation. This workflow--useful for proofing brochures, newsletters, and other layouts--allows you to maintain consistency by using the source RGB file for multiple purposes. This document could be created as follows: · Create an RGB image in Photoshop and save it as Photoshop EPS. · Place the EPS image in a QuarkXPress document. · Create several process-colored page elements alongside the image and print. · Use ColorWise to convert the RGB image to simulated press CMYK and adjust the process colors for proofing to the device. 1 1-19 Advanced workflows The ColorWise settings used in this example are: · RGB Source Profile set to EFIRGB or another RGB source definition · Rendering Style set to Photographic · RGB Separation set to Simulation · CMYK Simulation Profile set to SWOP · CMYK Simulation Method set to Full (Source GCR) The following diagram indicates the steps for this particular workflow in black. Photoshop RGB and QuarkXPress CMYK workflow Photoshop QuarkXPress Printer driver ColorWise print options Define RGB Source Select RGB Source: None Select Rendering Style (CRD) Select RGB Separation: Output Select RGB Separation: Simulation Convert Press CMYK to Press Sim. Convert Press CMYK to Custom Sim. Select Device CMYK Simulation: None Read Embedded Profiles Define RGB Source Embed Source Profiles Convert RGB to CMYK Convert CMYK to CMYK Select RGB Mode Select CMYK Mode Select Destination Profile Save as TIFF Save as EPS Save as JPEG Print Read Embedded Profile Define RGB Colors Define CMYK Colors Define spot Colors Convert RGB to CMYK Convert CMYK to CMYK Convert spot to CMYK Embed Source Profile Select Destination Profile Export as TIFF Save as EPS Print (Mac OS-Only) Black and White Color/Grayscale ColorSync Color Matching PostScript Color Matching Turn Spot Color Matching On Turn Spot Color Matching Off Select Output Profile Select Custom Output Profile 2 Chapter 2: Working with Color in Applications 2-1 Working with color This chapter provides guidelines for defining colors in your documents to produce the results you want. The following topics are covered: · Factors affecting how you work with color · Choosing colors in applications that rely on Graphic Device Interface (GDI) or QuickDraw to communicate data to the printer driver, such as presentation and word processing applications · Choosing colors in applications that have the ability to write their own PostScript, such as some page layout, illustration, and pixel-editing applications Working with color The two main factors that influence how you work with color in the creation of documents are the applications you use and the Color Server. Applications vary in the methods they provide for choosing colors and in the way they transmit color data to the Color Server. · Office applications, such as presentation software, spreadsheets, and word processing programs, use the RGB color model. They typically transmit only RGB data to the Color Server. · Illustration applications use both the RGB and CMYK color models but typically transmit only CMYK data to the Color Server. · Pixel-editing applications use both the RGB and CMYK color models. They also transmit both RGB and CMYK data to the Color Server. 2 2-2 Working with Color in Applications The type of printing you plan for the document--short-run color printing on the Color Server versus color proofing for eventual printing on an offset press--determines the way you define colors, as well as the print option settings you choose. · For short-run color printing on the Color Server, use any application and define colors in either RGB or CMYK. If your application supports it, you can also choose colors from the PANTONE color library. Placed images may be limited to the RGB color space. Choose the appropriate settings for print options affecting color output (see the Color Guide). · For color proofing, use an application that writes its own PostScript. Define colors in RGB or CMYK, or choose colors from the PANTONE color library. Placed images can also be defined in RGB or CMYK. Choose the appropriate settings for print options affecting color output (see the Color Guide). NOTE: The Color Server allows you to use RGB or CMYK data when printing proofs for an offset press run. However, sending data to an imagesetter most often requires CMYK data. Color reference pages Your Color Server user software includes several types of color reference pages that allow you to see the range of colors that can be printed on your printer. For predictable color, use the color reference pages when defining the colors in your document. · RGB Color Reference--a Microsoft Word file and a Microsoft PowerPoint file that allow you to view the colors available in the standard palettes of office applications and see how those colors print on the Color Server (see page 2-4). · CMYK Color Reference--an 11-page downloadable PostScript file of CMYK color patches (see page 2-7). · PANTONE Coated Color Reference--a 19-page downloadable PostScript file of color patches showing CMYK equivalents of PANTONE Coated colors. This file prints differently depending on the setting of the Spot Color Matching option (see page 2-7). In addition, you can print RGB, CMY, and PANTONE color charts from the Color Server Control Panel. 2 2-3 Office applications Office applications The Color Server must receive PostScript instructions to print an image or a document. Many applications do not create these PostScript instructions, relying on the printer driver to create them. Included in this category are most word processing, spreadsheet, and presentation graphics applications. These applications use Windows Graphics Device Interface (GDI) to display and print when running Windows, and Apple QuickDraw to display and print when running Mac OS. We refer to these GDI and QuickDraw applications as "office applications." All office applications handle color similarly, using the same RGB color model used for the color monitor. Most office applications allow you to choose colors from a palette of preselected colors; some allow you to add new colors to the palette using a color picker. Although some applications allow you to specify color using the CMY, HSL, and HSV color models, these applications always send RGB color data to the Color Server. (An exception to this is a CMYK EPS file placed in the document, which is sent as CMYK data.) Consider the following when working with color in office applications: · The range of colors that can be displayed in RGB on your monitor is much larger than the range of colors that can be printed on your printer. When you print the document, out-of-gamut RGB colors are mapped to the colors your printer can produce. · Office applications send only RGB data to the Color Server. You control the rendering style of the color conversion with your selection of a CRD. Each CRD uses a different color rendering style and, therefore, has a different way of mapping unprintable colors to the color gamut of your printer. For more information on color rendering styles, see the Color Guide. 2 2-4 Working with Color in Applications Choosing colors in office applications Two RGB color reference pages, a Microsoft Word file and a Microsoft PowerPoint file, are provided with your Color Server user software. You can print these files using different CRDs to see how the colors appear when printed to the Color Server. For best results, print the color reference page using the same print options you plan to use for your final document. Select the colors you want to use from the printed version of the RGB color reference page and use those colors in your document. RGB Color Reference (Microsoft PowerPoint) 2 2-5 PostScript applications PostScript applications Most applications used for illustration, pixel editing, and page layout can create the PostScript information they send to a PostScript printer or save in PostScript files. Illustrator, Photoshop, PageMaker, QuarkXPress, and Macromedia FreeHand are all PostScript applications. PostScript applications work with color in many different ways. Most allow you to choose process colors (by entering percentages for cyan, magenta, yellow, and black), as well as named colors from a spot color system, such as PANTONE. When you print composites, these applications send process-color equivalents for named spot colors to the Color Server. In some applications, you can also choose colors using the RGB, HSB, HSL, or other color models. Generally, PostScript applications send color information to the Color Server as CMYK data. An exception to this is an RGB image placed in the document, which is sent directly to the Color Server (unless you specify special color management settings in the application.) In addition, some PostScript applications that allow you to define colors in RGB or other color models can also send data to the Color Server in those color spaces. Color controls in PostScript applications are typically designed for printing on an offset press, and some adjustments are required for printing to the Color Server. Displayed versions of colors you choose in these applications may not match Color Server output exactly, and named colors may not print accurately on the Color Server, since these colors typically require custom inks. 2 2-6 Working with Color in Applications Choosing colors in PostScript applications With PostScript applications, you can create colors using any of the color models supported by the application. All PostScript applications support CMYK; some also support RGB and other color models based on monitor display values. PostScript applications also allow you to choose named colors using one or more color libraries, such as PANTONE (see page 2-7). Use swatch color matching to ensure predictable color printing results with the Color Server or to match your Color Server output to colors produced by other printers. Swatch color matching Your Color Server user software includes several color reference pages (see page 2-2). By choosing colors from these reference pages, you ensure that you get the same color from your device. For best results, calibrate the Color Server before printing the reference pages. NOTE: Swatch color matching does not match monitor colors to printed colors. For this, you must use a color management system and calibrate your monitor. 2 2-7 PostScript applications Using the CMYK Color Reference The CMYK Color Reference included with your Color Server user software allows you to see how various cyan, magenta, yellow, and black combinations look when printed on your printer. CMYK Color Reference To print the CMYK Color Reference, download the file to the Color Server. The printed pages display groups of color patches in graduated combinations of yellow, magenta, and cyan, and smaller patches that include 25%, 50%, and 75% black. Refer to these pages to pick colors and specify process color values in your application. For the location of the file on the User Software CD, see the User Software Installation Guide. PANTONE Coated Color Reference The PANTONE Coated Color Reference included with your Color Server user software can help ensure predictable results with colors chosen from the PANTONE color library. 2 2-8 Working with Color in Applications The information printed by the PANTONE Coated Color Reference depends on the Spot Color Matching setting. · On--Prints swatches of the closest CMYK equivalents of PANTONE colors your printer can produce. The equivalent PANTONE color name/number is printed below each swatch. · Off--Prints swatches of the CMYK equivalents of PANTONE colors as defined by PANTONE. (These are the same CMYK values defined in applications that include PANTONE libraries.) The CMYK values used to produce the color, as well as the PANTONE color name/number, are printed below each swatch. To print the PANTONE Coated Color Reference, download the file to the Color Server. For the location of the file on the User Software CD, see the User Software Installation Guide. If the default Spot Color Matching setting on the Color Server is not the setting you want to use for printing the PANTONE colors, download the file to the Hold queue. Then override the Spot Color Matching setting using a job management utility, such as Command WorkStation (see the Job Management Guide). Default output profile The default output profile consists of both a profile for the printer supported by the Color Server and a calibration target that describes the expected behavior of the printer. For more information on output profiles, see the Color Guide. In certain cases, you may want to customize the default output profile to achieve particular color effects (see the Color Guide). When you do so, the new customized output profile is applied to all data in the print job. You can also use ColorWise Pro Tools to download your own output profile to the Color Server (see the Color Guide). Downloaded output profiles are at first associated with the default calibration target. CMYK simulation If you use the Color Server to print proofs for an offset press job or simulate another printer, choose the appropriate CMYK Simulation Profile and CMYK Simulation Method print option settings (see the Color Guide). 3 Chapter 3: Office Applications 3-1 Working with office applications The ColorWise color management system provides complete color management for jobs printed from office applications. This chapter provides instructions for printing color documents from Graphics Device Interface (GDI) and QuickDraw applications, such as presentation, spreadsheet, and word processing applications. You can use these instructions with the Microsoft Office applications. Working with office applications Before printing from these applications, make sure the appropriate printer driver and the Color Server PPD are installed on your computer, as described in the User Software Installation Guide. Defining colors Office applications use the RGB color model. For instructions on defining colors, see "Choosing colors in office applications" on page 2-4. The only way to use CMYK or PANTONE colors is to define them in EPS files with an illustration or page layout application, and then place these files in Office documents. Colors in EPS files are preserved until they reach the Color Server (assuming no PostScript Color Management information was included.) Office applications lack finesse when displaying EPS files, so use these files only when RGB colors are impractical in your specific workflow. EPS files are useful when using large or complex images that must be printed at full resolution or exceed the memory allocation of some MS Office applications. Working with imported files Although your application may allow you to import a variety of file formats, EPS files are recommended for all raster images you want to import; some applications have printing problems when using file formats such as TIFF and PICT. NOTE: It may be necessary to perform a "custom install" of your MS Office application if you are unable to import EPS elements. 3 3-2 Office Applications Although there are no color management options within office applications, color conversions do occur when you import images or page elements that were not defined in RGB. To avoid such conversions with imported files, use the EPS file format for artwork that is to be imported into office applications. All RGB images placed in a document are affected by RGB Source and Rendering Style settings. Tip for advanced users If you place multiple RGB images, mixed non-photographic and photographic, a single CRD may not be suitable for all the images. In this case, you may want the photographic images to bypass the CRD altogether. To accomplish this, save the image in CMYK mode with a pixel-editing application, such as Photoshop, and perform color correction. Save the image as a Photoshop EPS and import it into the document. Selecting options when printing There are few differences among office applications with regard to Color Server printing. The instructions in this chapter apply to all office applications. Follow the instructions in the Color Guide to specify print options and color management settings. To specify these options, you must use a PostScript Level 2 (or later) printer driver, such as an Adobe PostScript Printer Driver. Because office applications send RGB data to the Color Server, your choices of RGB Source and Rendering Style settings are important. Specify the appropriate CRD for the color effect you want (see the Color Guide). Output profiles All color data in the job is affected by the output profile on the Color Server. This profile may be the one designed for your device and shipped with the Color Server, or it may be a custom profile created at your site (see the Color Guide). If necessary, print the Test Page to see which profile is currently resident on the Color Server. 4 Chapter 4: Adobe Photoshop 4-1 Creating a monitor profile This chapter covers features of Adobe Photoshop versions 6.x and 5.x for Windows and Mac OS. The illustrations show only Mac OS dialog boxes, but the information and instructions apply equally to the Windows version of Photoshop. Because Photoshop uses a sophisticated color management system, there are several setup steps you should take before you begin working. These steps include: · Calibrate your monitor · Adjust Photoshop color settings Creating a monitor profile You can use the Adobe Gamma control panel to create and customize an ICC profile that describes the unique display characteristics of your monitor. This monitor profile enables Photoshop to compensate for the color behavior of the monitor when displaying images. As a result, colors previewed on the monitor will more closely match colors in your printed output. NOTE: If a profile for your monitor is not available, use the Adobe Gamma control panel setup Assistant (Wizard on Windows) to customize an available profile that, at a minimum, has the same type of phosphors as your monitor. TO CREATE A MONITOR PROFILE 1. Display the Adobe Gamma control panel by double-clicking its icon in either the Windows or Mac OS Control Panel. Click Assistant (Wizard on Windows) if you have not yet selected your monitor profile or want to customize your current profile,. 2. 4 4-2 Adobe Photoshop 3. Follow the step-by-step instructions in the Assistant or Wizard to calibrate your monitor and create a monitor profile. Specifying color settings The following sections outline the recommended color settings for Photoshop 6.x and 5.x in a Color Server workflow. These color settings include: Working Spaces--Default color spaces to use when working with RGB and CMYK documents. ICC color profiles describe the gamut and color characteristics of these working spaces. Color Management Policies (Photoshop 6.x) or Profile Mismatch Handling (Photoshop 5.x)--Instructions that tell Photoshop what to do when it encounters color data from a color space other than the specified working space. 4 TO 1. 4-3 Specifying color settings Photoshop 6.x color settings Photoshop 6.x uses a sophisticated color management system that handles document colors for a variety of color-managed workflows. By customizing color settings, you can specify the amount of color management you want to use while working in Photoshop 6.x. PHOTOSHOP 6.X SPECIFY COLOR SETTINGS FOR Choose Color Settings from the Edit menu. The Color Settings dialog box appears. 2. Select Advanced Mode. In Advanced Mode, a more extensive list of options is displayed. 4 3. 4-4 Adobe Photoshop Choose the desired working space profile for each color mode in the Working Spaces area. Use the following guidelines for specifying working spaces: · For RGB, choose the profile for the default RGB color space used by the Color Server. In most cases, this is EFIRGB. Consider sRGB if you usually view images on a generic PC monitor or rely on a Windows operating system to manage color on your monitor. If you choose sRGB as a working space, you must print with the ColorWise RGB Source option set to sRGB. New RGB documents you create in Photoshop will use this working space. NOTE:EFIRGB is set as the default RGB source color space on the Color Server. No matter what RGB space you select, make sure it is available on the Color Server. For more information on downloading RGB Source profiles to the Color Server, see the Color Guide. · For CMYK, choose a profile that describes your target press (such as SWOP) if you are a prepress user. If you are an office user printing final output, choose an output profile that describes the device connected to the Color Server. To use a devicespecific output profile, you must first upload the profile from the Color Server to your computer (see the Color Guide). New CMYK documents you create in Photoshop will use the specified working space. · For guidelines on specifying Gray and Spot working spaces, see your Photoshop 6.x documentation. 4. In the Color Management Policies area, choose policies for handling documents without embedded profiles or with embedded profiles that differ from the working space . Unless you are an advanced color user, we recommend that you choose Off from the RGB, CMYK, and Gray menus. This option discards the original profile embedded in a document if it differs from the specified working space, while preserving the numeric color values in the document. For Profile Mismatches, select Ask When Opening. This option displays an alert message that lest you override the specified policy behavior (Off ) when opening documents or importing color data.