User manual

95.08.23.11.30
Color LaserWriter 12/600 PS Basics & Theory 1–81
Developing
Cylinder Drive
The toner carousel motor rotates the developing cylinder.
After the toner cartridge is pressed against the photosensitive drum, the
mechanical controller rotates the toner carousel motor. The toner
carousel motor drives the developing cylinder in the toner cartridge by
means of the large white gear on the printer drive assembly into which
the photosensitive drum mates.
Note: The photosensitive drum is driven by drum motor M3. Though
the drum and carousel motors use separate drive trains, they are deliv-
ered in synch by the mechanical controller board.
Upon completion of the developing process for the designated color,
the mechanical controller sets the developing rotary brake signal
(
/DEVBRK) to “L” and the toner carousel brake clutch (CL1) to on to
apply a brake. The toner carousel motor then stops and the developing
cylinder ceases to rotate.
Photosensitive
Drum
Developing
Cylinder
Toner Feed
Roller
Stirring
Plate
Toner carousel motor M3
delivers developing cylinder
drive at this point.
Photosensitive drum
receives rotational drive
through the coupling at
the center of this gear.
This mockup does not show toner
carousel and photosensitive drum.
Developing Cylinder