Gamma Adjustment - Ricoh G092 Service Manual

Gamma Adjustment

NOTE: To correct color quality problems, clean and/or replace related parts first.
Then, if adjustments are required, follow the procedure in this section.
Overview
To adjust the printer gamma:
• Select the print mode that needs calibrating
• Print a color calibration test sheet
• Make the gradation scales on the printout smooth from the lowest to the
highest density. Adjust the CMY gradation scale at the top of the chart by
balancing the density of the C, M, and Y gradation scales – the CMY gray
scale should change smoothly from minimum to maximum, and there should
be no coloration.
The color adjustment sheet is as follows.
[B]
For each color, you can adjust 15 density levels (adjustment points) (example [A])
between 0 (lowest density) [B] and 255 (highest density) [C]. For each adjustment
point, you can adjust the density between values 0 and 255.
SM
PRINTER CONTROLLER SERVICE MODE
G081S914.PCX
5-7
[C]
[A]
G081/G092