Color Registration; Printer Gamma Correction; Line Position Adjustment - Ricoh D117 Service Manual

4.3.5 COLOR REGISTRATION

Line Position Adjustment

The automatic line position adjustment usually is done for a specified condition to get the best
color prints.
Do the following if color registration shifts:
Do "Auto Color Registration" as follows to do the forced line position adjustment.

1. First do SP2-111-3.
2. Then do SP2-111-1.
To check if SP 2-111-1 was successful, watch the screen during the process. A message is
displayed at the end. Also, you can check the result with SP 2-194-10 to -12.
You should also do the line position adjustment at these times:

After you transport or move the machine (you should do the forced line position

adjustment if you install the machine at the user location.) if the machine is pre-installed
at the workshop and moved to the user location,
When you remove or replace the motors, clutches, and/or gears related to the

drum/development/transfer sections
When you remove or replace the image transfer belt, image transfer belt unit or laser

optical housing unit

4.3.6 PRINTER GAMMA CORRECTION

The ACC is usually sufficient to adjust the color balance to get the best print output. You

only need the printer gamma correction to fine-tune to meet user requirements.
Use SP modes if you want to modify the printer gamma curve created with ACC. You can adjust
the gamma data for the following:
Highlight

Middle

Shadow areas

IDmax.

The adjustable range is from 0 to 30 (31 steps).
SM 4-9
Image Adjustment
D117/D118