• We recommend that you keep the printer gamma correction values at the default values.
  • The values adjusted/saved in the printer SP mode are applied after the machine’s power is turned off and then back on.
  • After adjusting/saving the values in the printer SP mode, make sure not to perform the printer’s Auto Color Calibration (ACC). Doing so will reset the values.
  • To change multiple resolutions, perform this procedure for each resolution. 

  1. Enter the SP mode.

  2. Select the mode you want to change in the printer SP1102-001: Resolution Setting.

    1102

    [Resolution Setting]

    Selects the printing mode (resolution) for the printer gamma adjustment.

    001

    Resolution Setting

    CTL

    [0 to 9 / 0 / 1/step]

    0: 1200x1200 Photo (2bit/4col)

    1: 1200x1200 Photo (1bit/4col)

    2: 600x600 Photo (4bit/4col)

    3: 600x600 Photo (2bit/4col)

    4: 600x600 Photo (1bit/4col)

    5: 1200x1200 Text (2bit/4col)

    6: 1200x1200 Text (1bit/4col)

    7: 600x600 Text (4bit/4col)

    8: 600x600 Text (2bit/4col)

    9: 600x600 Text (1bit/4col)

  3. Change the gamma correction value for each color in the printer SP1104: Gamma Adjustment.

    • When adjusting the value, be sure to follow the sequence: I (IDmax)M (Middle)S (Shadow)H (Highlight).
    • To lower the print density, reduce and save the H/M/S/I value for each color.
    • To heighten the print density, increase and save the H/M/S/I value for each color.

    1104

    [Gamma Adjustment]

    Adjusts the printer gamma for the mode selected in the "Mode Selection" menu.

    001

    Black: Highlight

    CTL

    [0 to 30 / 00 / 1/step ]

    002

    Black: Shadow

    CTL

    003

    Black: Middle

    CTL

    004

    Black: IDmax

    CTL

    021

    Cyan: Highlight

    CTL

    022

    Cyan: Shadow

    CTL

    023

    Cyan: Middle

    CTL

    024

    Cyan: IDmax

    CTL

    041

    Magenta: Highlight

    CTL

    042

    Magenta: Shadow

    CTL

    043

    Magenta: Middle

    CTL

    044

    Magenta: IDmax

    CTL

    061

    Yellow: Highlight

    CTL

    062

    Yellow: Shadow

    CTL

    063

    Yellow: Middle

    CTL

    064

    Yellow: IDmax

    CTL

    Gamma Correction Sheet
    Range where each value affects

  4. Execute the SP1105-001: Save Tone Control Value.

    • If you exit the SP mode without saving the values, any changes made in the printer SP1104: Gamma Adjustment will be lost.
    • You can check the color balance before and after the gamma adjustment in the printer SP1103-001: Test Page - Color Gray Scale.

  5. Turn the machine’s power off and then back on.
    The changed gamma correction setting is applied.
  6. Check the output image and repeat steps 1 - 4 until the desired image is obtained.