Toshiba manual Black Overprint, Managing color on the GA-1121

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Managing color on the GA-1121

see the application notes. Also, black text and line art defined as RGB = 0, 0, 0 in office applications (such as Microsoft Word) are converted to single-color black (CMYK = 0%, 0%, 0%, 100%) by the Microsoft PostScript Level 3 driver for Windows 2000/XP. To print this single-color black at the maximum toner density of the copier/printer, set the Pure Black Text/Graphics option to On.

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

Black Overprint

The Black Overprint option allows you to specify whether or not black text or text/graphics—defined as RGB = 0, 0, 0, or as CMYK = 0%, 0%, 0%, 100%— overprints colored backgrounds.

•Text—Black text overprints colored backgrounds, eliminating white gaps and reducing halo effects or misregistration of colors.

•Text & Graphics—Black text and graphics overprint colored backgrounds, eliminating white gaps and reducing halo effects or misregistration of colors.

•Off—Black text or text/graphics knocks out colored backgrounds.

NOTE: PostScript applications may perform their own black overprint conversions before sending the print job to the GA-1121.

One example of how you might use this setting is with a page that contains black text on a light blue background. The background blue color is CMYK = 40%, 30%, 0%, 0% and the black text is CMYK = 0%, 0%, 0%, 100%.

•With Black Overprint set to Text or Text & Graphics, the final text or text/graphic portions of the page are overprinted, or combined with the underlying colors. Black colors generated by applications (for example, RGB = 0%, 0%, 0%; CMYK = 0%, 0%, 0%, 100%) are printed using the maximum amount of black toner allowed by the calibration curve. This means that black text and line art will not exhibit halftone artifacts (as long as the copier/printer is calibrated correctly). There is no transition in the cyan and magenta toners, and the quality of the output is improved since it will not show artifacts near the edges of the text or text/graphics. The option also works with text defined in the RGB color space, that is RGB = 0, 0, 0.

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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 Using Spot -On Viii Contents Using CalibratorUsing the EFI Spectrometer ES-1000 Using the EFI Densitometer ED-100Using the X-Rite DTP32 densitometer ContentsColor Setup Using the X-Rite DTP41 spectrophotometerPage About this manual IntroductionAbout this manual Xii Introduction Key features of ColorWiseXiii Key features of ColorWise Page 11-1 Managing color on the GA-1121 Chapter GA-1121 Color ManagementManaging color on the GA-1121 RGB data Cmyk data Spot color data 11-2 GA-1121 Color ManagementGA-1121 color print option What it does 11-3 Managing color on the GA-1121Automatic/Off/On/Below 90-300 ppi Output profile is applied to all data in the print job see EFIRGB/sRGB PC 11-7 Managing color on the GA-1121 Rendering StyleOff Pure Black Text/Graphics11-8 GA-1121 Color Management Input Pure Black Text/Graphics11-9 Managing color on the GA-1121 Black Overprint11-10 GA-1121 Color Management Spot Color MatchingRGB Source Profile 11-12 GA-1121 Color Management Cmyk Simulation Profile11-13 Managing color on the GA-1121 Cmyk Simulation Method11-14 GA-1121 Color Management RGB Separation11-15 Managing color on the GA-1121 Output profileCombine Separations 11-16 GA-1121 Color Management PostScript printer driver for Windows and Mac OSToner Reduction 11-17 PostScript printer driver for Windows and Mac OS Setting color management print options for WindowsClick Update to display the current GA-1121 settings 11-18 GA-1121 Color Management Adobe PostScript printer driver for Mac OS11-19 PostScript printer driver for Windows and Mac OS Setting color management print optionsChoose Color/Grayscale from the Print Color menu 11-20 GA-1121 Color ManagementPage 11-22 GA-1121 Color Management Print dialog box, choose Printer Features from the menu22-1 An overview of calibration Chapter22-2 Color Calibration An overview of calibrationUnderstanding calibration 22-3 Understanding calibration How calibration works22-4 Color Calibration Scheduling calibrationChecking calibration status Using Calibrator22-5 Using Calibrator Click Calibrator Starting Calibrator22-6 Color Calibration Start ColorWise Pro Tools and connect to the GA-112122-7 Using Calibrator Expert Mode22-8 Color Calibration 22-9 Using Calibrator Restoring default calibration measurementsSetting up the ES-1000 Using the EFI Spectrometer ES-1000Generate Measurement Page pane, click Print 22-11 Using the EFI Spectrometer ES-1000Calibrating the GA-1121 with the ES-1000 Start CalibratorCheck the settings, and click Measure Place the ES-1000 in the calibration cradle, and click OK 22-13 Using the EFI Spectrometer ES-1000Setting up the ED-100 Using the EFI Densitometer ED-100Calibrating the GA-1121 with the ED-100 22-15 Using the EFI Densitometer ED-100Choose the appropriate options, and then click Start 22-17 Using the EFI Densitometer ED-100 Repeat to measure each successive patch on the Measurement 22-18 Color CalibrationChoose the appropriate options, and click Print Calibrating the GA-1121 with the DTP4122-19 Calibrating the GA-1121 with the DTP41 22-20 Color Calibration Click Read Strip 22-22 Color Calibration Calibrating the GA-1121 with the DTP32Click Measure Using AutoCal and ColorCal 22-25 Using AutoCal and ColorCal 22-26 Color Calibration Calibrating from the Control Panel with AutoCal or ColorCal With Expert Mode, you can print a Comparison Page see When prompted, choose Yes to print the measurementOn the Control Panel, press Set To Remove Calibration from the Control Panel 33-1 Chapter ColorWise Pro Tools33-2 ColorWise Pro Tools Profile ManagerStart ColorWise Pro Tools and click Profile Manager Setting the default profiles33-3 Profile Manager Start ColorWise Pro Tools and click the Profile Manager Downloading profiles33-4 ColorWise Pro Tools Repeat steps 2 through 4 for each type of profile33-5 Profile Manager 33-6 ColorWise Pro Tools Editing profilesManaging profiles Defining profiles To Define a Custom Simulation Profile 33-9 Profile Manager 33-10 ColorWise Pro Tools Color Editor33-11 Color Editor Page Page 33-14 ColorWise Pro Tools Use the plus and minus buttons to adjust brightness33-15 Color Editor ColorWise Pro Tools Checking edited profiles Undoing Cmyk simulation editsClick Test Print from the Color Editor window Using Spot-OnStarting Spot-On 33-18 ColorWise Pro Tools33-19 Using Spot-On Using the Spot-On main window33-20 ColorWise Pro Tools Working with existing colors 33-21 Using Spot-OnEnter the name of the color you want to find and click OK Choose Find from the Edit menuNew color group entry or color entry appears as Untitled Creating custom colorsLocate and select the desired color group, and click Open Downloading custom color groupsUploading custom color groups 33-24 ColorWise Pro ToolsEditing color values 33-25 Using Spot-On33-26 ColorWise Pro Tools 33-27 Using Spot-On Select how you want to enter the Cmyk values ColorWise Pro Tools Click OK to print the patchesClick the center patch in the Spot-On Color Search window Choose Start from the Instrument menu Using a measurement instrument to target colors33-29 Using Spot-On Saving changes and exiting Spot-On 33-31 Color Setup Color SetupSetting default ColorWise options 33-32 ColorWise Pro Tools AA-1 Color Measurement Instruments Using the X-Rite DTP41 spectrophotometerSetting up the DTP41 Appendix a Color Measurement InstrumentsLED indicator Unused connector Connect to serial port Calibrating the DTP41 AA-5 Color Measurement Instruments Click Calibrate DTP-41 AA-6 Color Measurement InstrumentsClick Utilities Click Done Close the Utilities window AA-8 Color Measurement Instruments Using the X-Rite DTP32 densitometerSetting up the DTP32 Interface cable Calibrating the DTP32 AA-11 Color Measurement Instruments Page BB-1 Importing density measurements Appendix BSimple Ascii Import File Format Saiff BB-2 Importing density measurements Example of 1D Status T density for EFI 34 patchExample of 1D Status T density for EFI 21 patch BB-3 Importing density measurements Example of 1D Status T density for an arbitraryPage Index DTP41 IndexDTP41 2-19 to 2-22, A-1 to A-7 Index