Epson Aculaser 2600 Series, Service Manual

Page: 96 / 454

EPSON AcuLaser C2600/2600 Revision B
Operating Principle Print Process 96
TRANSFER BELT UNIT
†
Photoconductor Drive Motor
Rotates the transfer belt.
†
Primary Transfer Support Roller/Primary Transfer Back-up Roller
To ensure the primary transfer, the two rollers press the transfer belt from its
backside against the drum by operation of the tension lever. The normal position
of the rollers is designed to make the transfer belt be in contact with the drum,
however, in the following cases, the rollers should be set to the position to keep the
belt away from the drum.
„
When replacing the drum (Photoconductor unit):
To avoid an accidental contact with the belt.
„
When transporting: To prevent the belt from getting a trace of rollers.
In this case, the rollers are moved away from the
belt a little enough to release the belt tension.
†
Electrode Roller
The electrode roller is in contact with the conductive layer that is on one end of the
transfer belt. The roller is positively charged with the primary transfer bias from
HVPS and charges the entire surface of the belt positively through the conductive
layer.
†
Vsync Sensor
While the transfer belt rotates, the Vsync sensor detects the rotational position and
rotation number of the belt by detecting a Vsync detection portion.
Figure 2-12. Primary Transfer (Drum to Belt)
Figure 2-13. Transfer Belt Position
Photoconductor
Drive Motor
Electrode Roller
Conductive
Layer
Vsync Sensor
Vsync detection portion
02001402
When Transporting
Primary Transfer
Support Roller
Primary Transfer
Back-up Roller
Normal Position
When Replacing the Drum
02001501