Doctor Roller Gap Adjustment - Ricoh C231 Service Manual

6.9.4 DOCTOR ROLLER GAP ADJUSTMENT

PURPOSE: To control the ink thickness around the ink roller.
ADJUSTMENT STANDARD:
0.07 mm gauge: Passes
0.09 mm gauge: Does not pass
CAUTION: Normally the doctor roller gap is not adjusted or changed. It tends
to be difficult to change in the field. If the gap is too narrow, an
uneven image may appear on the prints. If it is too wide, too much
ink will be applied to the drum screens, resulting in ink leakage
from the drum.
1. Wipe off the ink around the ink roller beforehand.
NOTE: To make this procedure easier, remove the ink cartridge, use SP 140,
select OFF in ink detection mode, and feed paper until the ink supply
ends.
2. Turn off the main switch and disconnect the power plug.
3. Remove the drum unit, then remove the ink roller unit. (See 6.9.3 Ink Roller
Unit Removal.)
4. Wipe off the ink around the ink roller and doctor roller.
SM
DRUM AND DRIVE SECTION
6-41
C231/C237/C238