Toshiba manual RGB Separation, 11-14 GA-1121 Color Management

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11-14 GA-1121 Color Management

Full (Source GCR) provides a complete and accurate simulation based on colorimetric transformations. Hues are preserved, even for primary colors. The Gray Component Replacement (GCR) level that was specified in the original (source) document is also preserved. Full (Source GCR) is therefore an excellent simulation technique for the highest quality press proofing applications.

Full (Output GCR) is also a complete and accurate simulation method based on colorimetric transformations. Hues are preserved, even for primary colors. With this method, the Gray Component Replacement (GCR) level that was specified in the original document is not preserved. Instead, all CMYK data is reseparated using the GCR level specified by the Output Profile. This simulation technique is similar to traditional ICC color matching methods and is appropriate for most documents designed for the press, but reproduced on your copier/printer.

NOTE: When you specify On for Pure Black Text/Graphics, and specify Full (Output GCR) for CYMK Simulation Method, the black text and graphics in your document are printed with 100% black-only toner.

NOTE: This feature is not available with the PCL driver.

RGB Separation

The RGB Separation option determines how RGB colors (as well as Lab and XYZ colors) are converted to CMYK. The name of this option is meant to be descriptive, since the option defines the color spaces that will be used by the GA-1121 to “separate” the RGB data into CMYK values.

The two choices available for this option determine whether RGB data is converted into the full gamut of the copier/printer (output) or is first converted into the gamut of another digital printer or press standard (simulation). This feature is helpful for making one device behave like another for RGB data. For example, if a high-quality ICC profile is available for another print device, the copier/printer can simulate the behavior of that device.

RGB Separation is also useful for prepress applications. For example, it allows you to experiment with the appearance of an RGB scan under different press printing conditions, without having to convert the RGB data to CMYK data for each condition. When the desired printing condition is found, convert the file to CMYK, using the same CMYK simulation profile you used during the experimentation.

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Contents Toshiba GA-1121 About the Documentation Part Number Avis de Conformation Classe a de l’Industrie Canada Software License Agreement Limitation of Liability Contents Viii Contents Using Calibrator Using the EFI Spectrometer ES-1000Using the EFI Densitometer ED-100 Using Spot -OnContents Color SetupUsing the X-Rite DTP41 spectrophotometer Using the X-Rite DTP32 densitometerPage About this manual IntroductionAbout this manual Key features of ColorWise Xii IntroductionXiii Key features of ColorWise Page Managing color on the GA-1121 Chapter GA-1121 Color Management11-1 Managing color on the GA-1121 11-2 GA-1121 Color Management RGB data Cmyk data Spot color data11-3 Managing color on the GA-1121 GA-1121 color print option What it doesAutomatic/Off/On/Below 90-300 ppi Output profile is applied to all data in the print job see EFIRGB/sRGB PC Rendering Style 11-7 Managing color on the GA-1121Pure Black Text/Graphics 11-8 GA-1121 Color ManagementInput Pure Black Text/Graphics OffBlack Overprint 11-9 Managing color on the GA-1121Spot Color Matching 11-10 GA-1121 Color ManagementRGB Source Profile Cmyk Simulation Profile 11-12 GA-1121 Color ManagementCmyk Simulation Method 11-13 Managing color on the GA-1121RGB Separation 11-14 GA-1121 Color ManagementCombine Separations Output profile11-15 Managing color on the GA-1121 Toner Reduction PostScript printer driver for Windows and Mac OS11-16 GA-1121 Color Management Click Update to display the current GA-1121 settings Setting color management print options for Windows11-17 PostScript printer driver for Windows and Mac OS Adobe PostScript printer driver for Mac OS 11-18 GA-1121 Color ManagementSetting color management print options 11-19 PostScript printer driver for Windows and Mac OS11-20 GA-1121 Color Management Choose Color/Grayscale from the Print Color menuPage Print dialog box, choose Printer Features from the menu 11-22 GA-1121 Color ManagementChapter 22-1 An overview of calibrationUnderstanding calibration An overview of calibration22-2 Color Calibration How calibration works 22-3 Understanding calibrationScheduling calibration 22-4 Color Calibration22-5 Using Calibrator Using CalibratorChecking calibration status Starting Calibrator 22-6 Color CalibrationStart ColorWise Pro Tools and connect to the GA-1121 Click CalibratorExpert Mode 22-7 Using Calibrator22-8 Color Calibration Restoring default calibration measurements 22-9 Using CalibratorUsing the EFI Spectrometer ES-1000 Setting up the ES-100022-11 Using the EFI Spectrometer ES-1000 Calibrating the GA-1121 with the ES-1000Start Calibrator Generate Measurement Page pane, click PrintCheck the settings, and click Measure 22-13 Using the EFI Spectrometer ES-1000 Place the ES-1000 in the calibration cradle, and click OKUsing the EFI Densitometer ED-100 Setting up the ED-10022-15 Using the EFI Densitometer ED-100 Calibrating the GA-1121 with the ED-100Choose the appropriate options, and then click Start 22-17 Using the EFI Densitometer ED-100 22-18 Color Calibration Repeat to measure each successive patch on the Measurement22-19 Calibrating the GA-1121 with the DTP41 Calibrating the GA-1121 with the DTP41Choose the appropriate options, and click Print 22-20 Color Calibration Click Read Strip Calibrating the GA-1121 with the DTP32 22-22 Color CalibrationClick Measure Using AutoCal and ColorCal 22-25 Using AutoCal and ColorCal 22-26 Color Calibration Calibrating from the Control Panel with AutoCal or ColorCal When prompted, choose Yes to print the measurement With Expert Mode, you can print a Comparison Page seeOn the Control Panel, press Set To Remove Calibration from the Control Panel Chapter ColorWise Pro Tools 33-1Profile Manager 33-2 ColorWise Pro Tools33-3 Profile Manager Setting the default profilesStart ColorWise Pro Tools and click Profile Manager Downloading profiles 33-4 ColorWise Pro ToolsRepeat steps 2 through 4 for each type of profile Start ColorWise Pro Tools and click the Profile Manager33-5 Profile Manager Managing profiles Editing profiles33-6 ColorWise Pro Tools Defining profiles To Define a Custom Simulation Profile 33-9 Profile Manager Color Editor 33-10 ColorWise Pro Tools33-11 Color Editor Page Page Use the plus and minus buttons to adjust brightness 33-14 ColorWise Pro Tools33-15 Color Editor ColorWise Pro Tools Undoing Cmyk simulation edits Checking edited profilesUsing Spot-On Starting Spot-On33-18 ColorWise Pro Tools Click Test Print from the Color Editor windowUsing the Spot-On main window 33-19 Using Spot-On33-20 ColorWise Pro Tools 33-21 Using Spot-On Working with existing colorsChoose Find from the Edit menu Enter the name of the color you want to find and click OKCreating custom colors New color group entry or color entry appears as UntitledDownloading custom color groups Uploading custom color groups33-24 ColorWise Pro Tools Locate and select the desired color group, and click Open33-25 Using Spot-On Editing color values33-26 ColorWise Pro Tools 33-27 Using Spot-On Click the center patch in the Spot-On Color Search window ColorWise Pro Tools Click OK to print the patchesSelect how you want to enter the Cmyk values 33-29 Using Spot-On Using a measurement instrument to target colorsChoose Start from the Instrument menu Saving changes and exiting Spot-On Setting default ColorWise options Color Setup33-31 Color Setup 33-32 ColorWise Pro Tools Using the X-Rite DTP41 spectrophotometer Setting up the DTP41Appendix a Color Measurement Instruments AA-1 Color Measurement InstrumentsLED indicator Unused connector Connect to serial port Calibrating the DTP41 AA-5 Color Measurement Instruments Click Utilities AA-6 Color Measurement InstrumentsClick Calibrate DTP-41 Click Done Close the Utilities window Setting up the DTP32 Using the X-Rite DTP32 densitometerAA-8 Color Measurement Instruments Interface cable Calibrating the DTP32 AA-11 Color Measurement Instruments Page Simple Ascii Import File Format Saiff Appendix BBB-1 Importing density measurements Example of 1D Status T density for EFI 21 patch Example of 1D Status T density for EFI 34 patchBB-2 Importing density measurements Example of 1D Status T density for an arbitrary BB-3 Importing density measurementsPage Index Index DTP41DTP41 2-19 to 2-22, A-1 to A-7 Index