Toshiba GA-1121 manual Chapter, An overview of calibration

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22-1

An overview of calibration

Chapter 2:

Color Calibration

Calibrating the GA-1121 ensures consistent, reliable color output. This chapter explains how calibration works and provides instructions for all calibration procedures. You can calibrate the GA-1121 using ColorWise Pro Tools in combination with any of the following color measurement instruments:

•EFI Spectrometer ES-1000 hand-held spectrometer

•EFI Densitometer ED-100 hand-held densitometer

•X-Rite DTP41 automatic scanning spectrophotometer

•X-Rite DTP32 automatic scanning densitometer

By connecting one of these instruments to a serial or USB port on your computer, you can quickly measure calibration color patches and download measurements to the GA-1121.

NOTE: To use the ES-1000 or ED-100 with a Mac OS computer, you must connect the instrument to a USB port. You also need an adaptor to connect the ES-1000 or ED-100 to the Mac OS computer. For more information, contact your service technician/representative. For information on setting up and operating the DTP41 and DTP32, see Appendix A.

Another way to obtain measurements is by using the copier/printer’s built-in scanner as part of AutoCal™ or ColorCal™, which do not require the use of a measurement instrument and can be run from ColorWise Pro Tools or the GA-1121 Control Panel.

When choosing a calibration method, keep in mind that methods using a color measurement instrument such as the ES-1000, DTP41, or DTP32 are generally the best. We recommend using the ES-1000 because it captures measurements very accurately and quickly, can be used to calibrate and profile printers using pages with randomized patches, and can be used to measure and adjust individual spot colors.

For information on advanced calibration and simulation features available with ColorWise Pro Tools, such as editing profiles and creating custom profiles, see Chapter 3. A format for inputting color measurements from other densitometers is described in Appendix B.

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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 the EFI Spectrometer ES-1000 Viii Contents Using CalibratorUsing the EFI Densitometer ED-100 Using Spot -OnColor Setup ContentsUsing the X-Rite DTP41 spectrophotometer Using the X-Rite DTP32 densitometerPage About this manual IntroductionAbout this manual Xii Introduction Key features of ColorWiseXiii Key features of ColorWise Page Managing color on the GA-1121 Chapter GA-1121 Color Management11-1 Managing 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 Style11-8 GA-1121 Color Management Pure Black Text/GraphicsInput Pure Black Text/Graphics Off11-9 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 SeparationCombine 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 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 ChapterUnderstanding calibration An overview of calibration22-2 Color Calibration 22-3 Understanding calibration How calibration works22-4 Color Calibration Scheduling calibration22-5 Using Calibrator Using CalibratorChecking calibration status 22-6 Color Calibration Starting CalibratorStart ColorWise Pro Tools and connect to the GA-1121 Click Calibrator22-7 Using Calibrator Expert Mode22-8 Color Calibration 22-9 Using Calibrator Restoring default calibration measurementsSetting up the ES-1000 Using the EFI Spectrometer ES-1000Calibrating the GA-1121 with the ES-1000 22-11 Using the EFI Spectrometer ES-1000Start Calibrator Generate Measurement Page pane, click PrintCheck 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 Calibration22-19 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 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 Manager33-3 Profile Manager Setting the default profilesStart ColorWise Pro Tools and click Profile Manager 33-4 ColorWise Pro Tools Downloading profilesRepeat 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 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 editsStarting Spot-On Using Spot-On33-18 ColorWise Pro Tools Click Test Print from the Color Editor window33-19 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 colorsUploading custom color groups Downloading custom color groups33-24 ColorWise Pro Tools Locate and select the desired color group, and click OpenEditing color values 33-25 Using Spot-On33-26 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 Setting up the DTP41 Using the X-Rite DTP41 spectrophotometerAppendix 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 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