Drum Drive - Ricoh FW780 Service Manual

1.2 DRUM DRIVE

The OPC drum [A] is 80 millimeters in diameter and 970 millimeters long. It turns
constantly when the main motor [B] is on.
When the main motor turns on, the drive is transmitted to the drum in the
following way:
main motor drive gear [C]
drum flange [F]
When the drum knob is tightened, the right flange presses firmly against the drum
so that the drum is held tightly between the flanges. The drum and flanges turn
together when the main motor is on. At this time, the drive is also transmitted to
the original feed rollers [G] through the original feed drive pulley [H] and belt [I].
SM
[I]
[H]
[D]
idle gears [D]
drum
[C]
drum drive gear [E]
2-2
[A]
[G]
[F]
[E]
[B]
A163