Theory of Operation 2-23
Process Drive
The process drive is an open loop system that transmits torque to two main camshaft
assemblies. One camshaft assembly controls the transfix roller loading, and the other
controls the drum maintenance system and printhead tilt system. A small DC servo
motor powers the process drive gearbox to rotate the gears to specific positions during
the printing process. The process drive is able to actuate each camshaft system
independently or concurrently through the use of the swing arm in the gear train.
Operation of the transfix and drum maintenance system is controlled by the rotational
direction of the motor.
When the process motor rotates in one direction, the swing gear engages the lower
gears. When the motor rotates in the opposite direction, the upper gears are engaged.
Since the system is open loop, special attention to the home position of the process
drive gears and the mating camshaft gears is critical. The process drive gearbox is
mechanically keyed upon installation via gear orientations. These gear orientations
allow the printer subsystems to self home during operation. If either the gearbox or
cam gears is out of home during installation, the printer does not function properly.
s2424-0
Swing Gear
To Next Page
Loading...
Need help?
General