LASER EXPOSURE
B234/B235/B236/D101/D102/D103 6-60 SM
6.10.5 POLYGON MIRROR MOTOR
The polygon mirror reflects the laser beam onto the OPC drum to expose the
image line by line in the main scan direction. The polygon mirror motor rotates at a
constant speed, even while the copier is in standby mode, but shuts off when the
copier enters the energy conservation mode.
Polygon Mirror Motor Rotation Speed
B234/D101: 90 ppm B235/D102: 110 ppm B236/D103: 135 ppm
24,803 rpm 29,528 rpm 37,205 rpm
Important:
• The polygon mirror motor has no brake mechanism, so it requires about 3
minutes to stop rotating.
• Before moving the machine or before servicing the motor or the area around the
polygon mirror motor, you should switch off the copier main power switch,
disconnect the machine, and wait at least three minutes for the motor to stop
rotating.
NOTE: The polygon mirror motor requires about 10 seconds to reach full speed
after the machine awakes from the energy conservation mode, or after the
machine is switched from the normal mode to low speed mode for printing
on thick paper. The machine cannot print during this 10 second interval
until it reaches full rotation speed.
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