Using the Colorimetry Function

Use the Colorimetry function to measure the colors on a printed test chart with the help of a predefined or custom color chart.

To use the Colorimetry function:

  1. In the RICOH Auto Color Adjuster dialog, select Colorimetry.
  2. If you want to use a custom colorimetry chart, create a color chart and add it to the Colorimetry dialog. For details, see Adding a Custom Colorimetry Chart.
  3. In the Colorimetry dialog, check the Chart ID column to view the ID of the colorimetry chart.
  4. Based on the chart ID, find the PDF stored in the C:\RicohAutoColorAdjuster\ColorimetryCharts folder.
  5. Print the PDF on your target printer.
      Important:
    • If you migrated from version 1.5.2.0 or earlier, make sure you print new color charts generated with the current version of the application.
  6. Place the chart for colorimetry on the paper input tray of the scanner, with the printed side facing up. For details, see Placing a Sample or Color Chart on the Input Tray.Placing the chart for colorimetry on the input tray
  7. In the Colorimetry dialog, select the checkbox next to the colorimetry chart you want to scan. Select Scan.
  8. In the Colorimetry Measurements dialog, select the measurement settings.
    1. In the File Name field, enter the file name of the measurement results. If you leave this field empty, the file name is automatically assigned.
        Note:
      • If you select more than one chart for colorimetry with the same sub-scan length, the File Name field is disabled and the file name is assigned automatically.
      • The automatically assigned file names use this template: chart name + <year><month><day><hour><minute><second>, where <year><month><day><hour><minute><second> is the time stamp when the scanning is executed.
    2. Select Browse, then select the destination folder where you want to save the files.
    3. Select whether you want to save the custom verification file. If you select the Save Custom Verification File checkbox, the saved file is displayed on the Add Color Chart and Edit Color Chart pages of the web application, in the Color Space list.
        Note:
      • The checkbox is active only if you select one of the following predefined charts: Fogra Media Wedge V3.0, Idealliance Control Wedge 2013, or Japan Color Control Strip.
      • Select the saved custom verification file in the Color Space field whenever you want to use a color space that is different from the standard ones. For example, use a custom Color Space if the color verification fails frequently using the verification limits set on the Default Settings page with a standard color space, regardless of the printer settings and condition.
    4. Select the Lighting Condition out of the following options: M0(A), M1(D50), and M2(A+UV cut).
        Note:
      • If you select the Save Custom Verification File checkbox, the application changes the Lighting Condition value to the value required for the selected chart. The Lighting Condition field becomes disabled.
    5. In the Color Model for Measurement field, select the color model to use for measurement out of the following: Lab, LCh, XYZ, Spectroscopy, Density (Status T), and Density (Status E).
        Note:
      • If you select the Save Custom Verification File checkbox, the application changes the Color Model for Measurement value to the value required for the selected chart. The Color Model for Measurement field becomes disabled.
    6. In the File Format field, select whether the format of the saved file is IT8 (*.it8) or CGATS (*.txt).
  9. Select OK.
    The Scan Chart dialog is displayed.
  10. In the Scan Chart dialog, select Start Scan.
    The scanner starts scanning the chart for colorimetry and creates a file with the color measurements results in the selected folder.

In this section:

  1. Creating a Custom Color Space
    Use this section to create a custom Color Space. You can select the custom Color Space when adding or editing a chart on the Color Charts page. You can access the Color Charts page from the Configuration page of the web application.
Parent topic: Measuring Colors