Ink Detection Adjustment - Ricoh PT3 Field Service Manual

• Wipe off the ink around the ink roller beforehand. (Use SP2-10.)
• Remove the drum
• Remove the Ink roller unit
1. Make sure that a 0.07 mm gap gauge goes through the gap [A] between the ink and doctor rollers,
and that a 0.09 mm gap gauge does not.
• The gap should be checked at both ends of the doctor roller. Insert a gap gauge at each end of
the roller. The gap tends to be larger for the center.
• While the gap gauge is inserted, hold the doctor and ink rollers with your fingers in order to stop
the rollers from rotating.
• While the gap gauge is inserted, hold the end of the gap gauge.
2. If the gap is out of the standard, loosen the screw [B] and adjust the gap by turning the cam bushing
[C] for the front and for the rear.
• Make sure to repeat the adjustment for both ends of the rollers.

Ink Detection Adjustment

Using an Oscilloscope
Purpose: To ensure that the CPU detects a no ink condition.
Drum
4
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