Epson AcuLaser Color 2000, Service Manual

Page: 70 / 204

EPSON AcuLaser C2000 Revision C
Operating Principles Printing Process 70
2.2.1.4 Timing Roller
Timing roller adjusts paper skewing carried by the paper feed mechanism
and rotates as the top of image on the transfer belt comes on the end of
paper.
†
Timing sensor (PC5) detects that the top of paper carried by the paper
feed mechanism reaches the timing roller.
†
When it detects paper, turns off the intermittent roller solenoid and
pauses carrying paper.
†
Timing roller starts rotating when a certain amount of time passed
after timing roller solenoid (SL5) is ON. If it fails to do so, load paper
again to prevent paper load failure (only for color printing).
†
When paper is longer than specification or smaller than A5 size, it
detects paper size error.
Figure 2-10. Timing Roller
2.2.2 Charging Process
Charging is done by giving static electricity on the OPC drum before laser
exposure. Scotron method is adopted for electric charger.
†
Generated ozone will be eliminated by the filter which is attached at
ozone fan.
The figure below is OPC drum cartridge.
Timing Roller
Paper Feed Mechanism
Front View
Body Back View
Timing Roller Solenoid
Timing Roller Paper
Sensor (PC5)