Ricoh C249, Service Manual

Page: 389 / 486

DRUM
SM 6-35 C264
C26
4
6.6.5 DRUM IDLING MECHANISM
Mechanism
Idling roller motor [A]
↓
Gears [B]
↓
Cam [C]
↓
Drum idling roller [D] rotates
↓
The drum idling roller puts the ink onto the screen and master before and after
printing. This ensures that the first print has sufficient ink density even if the
machine was not used for a long time.
The idling roller motor [A] turns to press the drum idling roller against the inner
surface of the drum screen [E].
The actuator disk [F] interrupts the idling roller HP sensor [G] when the drum idling
roller is in contact with the drum screen.
The number of drum idling rotations depends on temperature and period of
machine inactivity, as shown in the following table.
[A]
[B]
[C]
[D]
[D]
[E]
[F]
[G]