CHAPTER 6 FIXING SYSTEM

2.3 Controlling the Fixing Film Speed

F06-202-02 shows the construction of the control system used for the fixing film speed; the speed of rotation is controlled according to the changes in the output of the fixing film sensor (PS26).

DC controller PCB

D_

ROT_

FILM

Fixing film sensor (PS26)

Fixing film

Fixing lower roller

The following signal is used:

[1]Film rotation detection signal (FSAR_ROT_D): when the fixing film is rotating, alter- nately ‘1’ and ‘0’.

F06-202-02

E007 (fixing film rotation error)

Indicates that the film rotation detection signal cannot be detected for 6 sec or more when the reading of the main thermistor is 100°C or higher and, in addition, the fixing motor is rotating.

COPIER>ADJUST>FIXING>FX-FL-SP

COPIER>ADJUST>FIXING>FX-FL-TH

Use it to adjust the rotation speed of the fixing film. Blurry images caused by a fault in the fixing assembly can at times be corrected. (Blurry images can occur 400-some millimeters of the trailing edge.) This mode may also be used to adjust the reproduction ratio in feed direction.

COPYRIGHT © 2001 CANON INC.

CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001

6-5 P

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Canon IR2800, IR3300 Controlling the Fixing Film Speed, F06-202-02, Copieradjustfixingfx-Fl-Sp Copieradjustfixingfx-Fl-Th