Home Settings and AdjustmentsHighlight Automatic Adj.: Automatically Adjusting the Gradation and Background Density in Highlights

Highlight Automatic Adj.: Automatically Adjusting the Gradation and Background Density in Highlights

Change the printer gamma curve automatically to adjust the gradation and background density in highlights.

Use this function when the color reproducibility in the highlight part varies depending on the selection of screen for [Screen 1], [Screen 2], and [Stochastic], respectively.

This section describes how to perform the adjustment procedure when neither Integrated Color Care Unit IQ-501 nor Relay Unit RU-509 is mounted on the machine.

  • Make this adjustment after completing the Gamma Automatic Adjustment.

  • Use plain paper or white paper for color printing in this adjustment. Using colored paper cannot make this adjustment properly, affecting the color of output test pattern.

  • Normally, this adjustment is made as the printer gamma adjustment. Perform [Highlight Adjustment] if fine adjustment is needed.

  1. Follow the procedure on Administrator Setting to display the [Administrator Setting Menu] screen.

  2. Press [System Setting] on the [Administrator Setting Menu] screen, and then press [Expert Adjustment], [Quality Adjustment], and [Highlight Automatic Adj.] in sequence.

    The [Highlight Automatic Adj.] screen is displayed.

  3. Use [Next] and [Previous] to select the screen to be adjusted.

  4. Press [Readjust].

    • If the gradation appears widely misaligned in highlights of the image, press [Reset Adj. Data] to set the highlight value to "0", then press [Readjust].

    A dialog is displayed for confirmation of readjustment.

  5. Press [Yes].

    Or, press [No] to cancel the readjustment.

  6. Press [Print Mode].

    The [PRINT MODE] screen is displayed.

  7. Select A4 paper, then press Start on the control panel.

    A test pattern is printed, and the screen automatically returns to the [Highlight Automatic Adj.] screen.

  8. Place the test pattern on the original glass.

    • Position the arrow mark [2] of test pattern [1] at left, and face the print side downward.

    • Carefully align the test pattern [1] to the vertical original size guide [3] and horizontal original size guide [4] on the original glass.

    • Place about 10 sheets of blank copy paper on top of the test pattern [1].

    • Close the ADF.

  9. Press [Start] on the screen, or Start on the control panel. The current data of YMCK will be updated.

    • Since the machine does not determine the adjustment data to be effective or not for the first scanning, the message [Completed normally] will not be displayed. Repeat steps 6 to 9 until the message [Completed normally] is displayed.

    • If an error code (Error 1, 2, or 10) is displayed, check that the test pattern is positioned properly.

    • If any other error code is displayed, please contact your service representative.

  10. Check that the message [Completed normally] is displayed.

  11. If any message other than [Completed normally] is displayed, repeat steps 6 to 10.

  12. Press [Return] to return to the [Quality Adjustment Menu] screen.

  • When Relay Unit RU-509 or Integrated Color Care Unit IQ-501 is mounted on the machine, a test pattern different from the above is output.
    When a test pattern is output (same as steps 1 to 7), Relay Unit RU-509 or Integrated Color Care Unit IQ-501 automatically measures the test pattern.
    Based on the result, the gradation of the highlight part and the background density are adjusted automatically, so the manual measurement (steps 8 to 11) is not required.