Chapter 1. Color Management Background - Kodak

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Chapter 2. Using ColorWise Pro Tools Workflow - Normal CMYK and/or RGB Data Workflow - Normal CMYK and/or RGB Data If you have a typical job that contains CMYK and/or RGB data and wish to use ICC profiles to correct this data for your press, follow this workflow. 1. Launch the ColorWise Pro Tools toolbar. 2. Click the Color Set-Up button. The following window will launch. In this workflow you will be using ICC Profiles, linearization curves and calibration. You are concerned with both the CMYK and RGB data paths since it is possible that your job contains both kind of elements. 3. Choose a profile from the ‘RGB Source Profile’ drop-down menu. This will set your source profiles for ALL RGB data. 4. Choose a Rendering Intent for this profile. To learn more about rendering intents, see the EFI Color Guide. We recommend using relative colormetric, unless you know your job requires a different intent. 5. Choose a profile from the CMYK Simulation Profile drop-down menu. This will set your source profile for ALL CMYK data. In most cases, you will choose either Euroscale or SWOP depending on your location. If you select None, the CMYK data will not be sent through an ICC Profile. 6. Now at this point the RGB and CMYK data are ready for an output profile. The output profile will be paper and linearization level specific. Choose the appropriate profile from the ‘Output Profile’ drop-down menu. 7. If you wish to see and/or edit the linearization curves associated with that profile, click the Output Profile Curve Edits (Color Editor) button. See page 2-8 for more information on the Color Editor. 8. If you wish to remove low percentages from the data or correct for rich black, click the Output Sliders button. See page 2-19 for more information on Sliders. 9. The next step the data will take is through the calibration set. If you wish to recalibrate at this point, see spage 2-1. Otherwise, the calibration system will use the last known set of calibration curves to 2 - 24 CS600 System Controller
Chapter 2. Using ColorWise Pro Tools Output Profile Creation correct the data back to the state of the press when the ICC profile was created. This window will display what Calibration Set your output profile belongs to. It also shows the Ink Limit of the Set. If you have any data in your file above the percentage listed here, it will be reduced 4 dimensionally to that percentage by EFI’s Ink Reduction Algorithm. As a reminder, calibration will only operate on one color plane at a time, so these curves will not result in any pollution of the primaries. 10. The final option for the data is to choose if you want your black text and/or line art graphics to overprint any background or knockout. See page 2-21 for more information on the Black Overprint. SIMULATION MODE This workflow has a second path it could possibly take and that is to first convert the RGB data into the gamut of another digital printer or press standard and then into the color space of the Kodak Versamark Press on a given paper. The CMYK data would follow the same path as described above. This feature is helpful for making one type of output device behave like different output device. For this workflow, check the box labeled Simulation underneath the Rendering Intent drop-down menu. The arrows in the Expert Color Settings window will update to show the new data path. RGB data will now be converted to the CMYK Simulation color space first, and then to the output profile color space you have selected. Data then follows the same path as described in the first part of this section. Output Profile Creation There are four major steps in creating an Output Profile for your press. They are: 1 Print the Calibration Pattern and Linearization Page 2 Determine the maximum ink for the paper. 3 Print an ICC Pattern using the results of the Calibration Pattern. 4 Use a utility to create an ICC Profile from the ICC Pattern. This will go over these three major steps and all the minor steps in between. 1 Print the Calibration Pattern & Linearization Page The Calibration Pattern needs to be printed on the press with NO ICC, NO linearization and NO Calibration adjustment. Once printed, the Calibrator tool from ColorWise Pro Tools will be used to read in the data. 1.1 Go to the main CWS window and choose File→ Import → Job. Navigate to the correct directory. Select the Cal&Lin.pdf file and click Add then Import (be sure Logical Printer is set to CS600 hold). The job will spool and then drop into a held state on the server. Color Management and Workflow User Guide 2 - 25
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