Canon Color iR C3480, Service Manual

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Chapter 7
7-40
F-7-46
[1] ITB cleaning unit
[2] ITB cleaning feedscrew
[3] ITB cleaning blade
[4] Tension roller
[5] Primary transfer roller
[6] ITB
[7] Idler roller
[8] Secondary transfer inside roller
[9] Secondary transfer outside roller
[10] Secondary transfer static eliminator
[11] Primary transfer block
[12] Secondary transfer block
7.7.1.2 Primary Transfer Block
0013-8507
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iR
C2550
The primary transfer block uses the drum/ITB motor (M1) to rotate the secondary transfer roller and the ITB cleaning feedscrew. The drive of M1 is controlled by
the DC controller.
The following describes the major control mechanism associated with the primary transfer block:
F-7-47
[1] ITB cleaning feedscrew
[2] ITB
[3] Secondary transfer inside roller
[4] Drum/ITB motor drive signal
M1: drum/ITB motor
7.7.1.3 ITB Soiling Removal Sequence Control
0013-8508
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iR
C2550
This controls for removing fingerprint that was left on ITB in the case that users touch the ITB by mistake (e.g., jam removal). This is controlled by the DC con-
troller. In accordance with user mode (cleaning of inside the machine) , the DC controller removes fingerprints that was left on ITB by executing the following
operations.
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
[11] [12]
[1]
[2]
[3]
[4]
M1
D-CON