DRUM UNIT
B234/B235/B236/D101/D102/D103 6-64 SM
Pre-charge unit (2):
Supplements the function of the charge unit. Because of the high speed of the
drum, the main charge corona does not give the drum enough charge,
especially for the first copy cycle. This is especially important for the
B236/D103 (135 ppm) due to its high speed.
Cleaning brush (9):
Rotates forward (ccw) with the drum (not against the direction of drum rotation).
This reduces wear on the surface of the drum and extends the life of the drum.
Ventilation duct:
Between the cleaning unit and the fusing unit. Reduces the effects of heat from
the fusing unit, which would cause toner clumping during toner transport and
cleaning. This is especially important for the B236/D103 (135 ppm) due to its
high speed.
Second cleaning blade (15):
Added specifically to reduce medaka, (white tear-drop shapes that appear in
the solid backgrounds of copies and prints).
NOTE:
• After training, super users (trained operators) can replace the following
components around the drum:
1) Pre-Charge Unit
2) Charge Corona Unit
3) Cleaning Unit.
• Two sensors have been added: a cleaning unit sensor and drum unit sensor.
When the machine is switched on or when the front door is closed, these sensors
detect whether the cleaning unit and drum unit are set correctly. If either or both
units are set incorrectly, a message appears on the operation panel. The
machine cannot be used until the problem has been corrected.