Fresa G024, Руководство по обслуживанию

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31 March, 1999 PCU (PHOTOCONDUCTOR UNIT)
2-15
Detailed
Descriptions
Transfer belt cleaning
When the cleaning brush [A] is moved into contact with the transfer belt [B],
pressure from the contact turns the cleaning brush. The lubricant bar [C] uses its
own weight to press against the cleaning brush, which applies lubricant to the
transfer belt to improve transfer and cleaning. The cleaning blade [D], positioned to
counter the rotation of the transfer belt, removes the toner from the transfer belt.
The transfer belt toner collection auger [E] carries the removed toner to the left end
of the PCU. Then a guide directs the toner into the OPC toner collection area.
In 4C mode, the cleaning unit separates from the transfer belt after the first image,
Y, has been formed, and stays away from the belt while the C, M, and K images
are forming. (In single-color black mode, the cleaning unit is in constant contact
with the transfer belt.) Then, after secondary transfer (from transfer belt to paper),
the cleaning unit is moved into contact with the transfer belt.
To control the movement of the cleaning unit [F], the transfer belt cleaning solenoid
[G] turns on and off moving the contact/separation lever [H].
Primary transfer Solenoid ON/OFF
Cleaning unit
contact/separation
Y OFF Contact
C ON Separated
M ON Separated
4C mode
K ON Separated
Single-color black
mode
OFF Contact
G024D154.WMF
G024D153.WMF
[A]
[B]
[C]
[D]
[E]
[H]
[F]
[G]