Epson AcuLaser Color 2000, Руководство по обслуживанию

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EPSON AcuLaser C2000 Revision C
Operating Principles Printing Process 72
2.2.3 Exposure Process
The printer creates the latent image on the photoconductor by the laser
beam emitted from the printhead. Printing position is adjusted as
described below.
†
Main Scanning Printing (Horizontal)
„
By SOS sensor on the laser diode control board (PWB-C), the main
scanning printing start position is determined.
†
Sub Scanning Printing (Vertical)
„
When it receives PRINT signal from the controller, the engine
control board (PWB-A) rotates the polygon motor (M6) and
transfer motor.
„
When transfer belt position sensor becomes ON, the printhead
receives video signal from the controller and adjust the sub
scanning printing start position by emitting the laser beam and
starts exposure.
Figure 2-12. Exposure Process
Table 2-4. Charging Process
No. Name Explanation
1 Photoconductor
Creates the latent image by laser beam on the surface
of the OPC drum (photoconductor), develops the
image by toner, and transfers the image on the
transfer belt.
2 Cleaner Blade Cleans the remaining toner on the photoconductor.
3 Electric Charger
Scotron method charger gives (-) electricity on the
photoconductor.
4 Rotation coil
This coil carries waste toner, generated from the
photoconductor, to the waste toner bottle.
5 Grid Electrode
Steadily provides electricity, generated by electric
discharge, to the photoconductor.
1
6
8
1
PWB-A
Photoconductor
Polygon Motor (M6)
Reflection Mirror
Laser Diode SOS Sensor
PJ12A
PJ27A