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4.20.9 PRINTER GAMMA CORRECTION
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. 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) |
2. 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 
M 
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.
Replacement and Adjustment
Replacement and Adjustment
Replacement and Adjustment
Image Adjustment
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 | |
Image Adjustment
Gamma Correction Sheet
Range where each value affects
3. 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.
4. Turn the machine’s power off and then back on.
The changed gamma correction setting is applied.
5. Check the output image and repeat steps 1 - 4 until the desired image is obtained.