Read Sharp MX-1800N (serv.man32) Service Manual online
MX-1800N TRANSFER SECTION L – 2
2. Operational descriptions
A. Outline
In this section, a high voltage is applied to transfer images to the
intermediate transfer belt and toner images on the intermediate
transfer belt are transferred to paper by the secondary transfer belt.
intermediate transfer belt and toner images on the intermediate
transfer belt are transferred to paper by the secondary transfer belt.
B. Primary (intermediate) transfer roller
separation mechanism and content
The primary transfer roller performs all pressure contact, all sepa-
ration, and only black contact depending on the operation mode.
When the roller separation clutch (1TURC) is turned ON, the trans-
fer cam rotates and the primary transfer link and the primary trans-
fer arm which is linked with the cam are shifted in the arrow
direction, performing separation of the roller.
ration, and only black contact depending on the operation mode.
When the roller separation clutch (1TURC) is turned ON, the trans-
fer cam rotates and the primary transfer link and the primary trans-
fer arm which is linked with the cam are shifted in the arrow
direction, performing separation of the roller.
The arm performs all pressure contact, all separation, and only
black contact.
black contact.
The primary transfer and the secondary transfer are driven together
with the black developing motor.
with the black developing motor.
No.
Name
Functions and operations
1
Intermediate transfer blade
Cleans residual toner on the intermediate transfer belt.
2
Intermediate transfer belt
Transfers toner on the OPC drum to form toner images on the belt.
3
Primary transfer roller
Transfers toner images on the OPC drum to the intermediate transfer belt.
4
Transfer drive roller
Drives the transfer belt.
5
Transfer follower roller
Transfer belt follower drive
6
Tension roller
Applies a tension to the transfer belt.
7
Roller cleaning brush
Cleans the back surface of the transfer belt.
8
Y auxiliary roller
Retaining the belt position by separation of the Y transfer roller
9
Registration backup roller
Retaining the belt position in the process control and the registration section.
10
Secondary transfer belt
Transfers toner images on the intermediate transfer belt to paper.
11
Secondary transfer roller
Transfers toner images on the intermediate transfer belt to paper.
12
Secondary belt transfer roller
Drives the transfer belt.
13
Secondary belt tension roller
Applies a proper tension to the transfer belt.
1TUD_CL
1TUD_K
All pressure contact
ON
OFF
All separation
OFF
ON
Only black contact
OFF
OFF
All pressure contact
Only black pressure contact
All separation
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