Image forming apparatus having a control section which...

Details Image forming apparatus having a control section which... Image forming apparatus having a control section which...

2011-07-12

2011-07-12

Gray, David M (Department: 2852)

Electrophotography

Diagnostics

Of motive power or driven unit

C399S100000, C399S177000, C399S345000

Reexamination Certificate

active

07978990

ABSTRACT:
An image forming apparatus includes: a rotation shaft (71); a movable body (72) that is attached to the rotation shaft (71), that is provided with a cleaning member (73), and that moves with rotation of the rotation shaft (71); a motor M for rotating the rotation shaft (71); a control section (8) for controlling rotation of the motor M; a current detecting section (77) for detecting a current flowing through the motor M; and a time counting section for counting time. Here, the control section is provided with: an overcurrent detection checking function; a time counting function; a predetermined position attainment checking function; a reciprocation control function; an erroneous detection checking function for performing erroneous detection checking operation in which an overcurrent detected while the movable body is moving forward in the reciprocation thereof is checked while the movable body is moving backward in the reciprocation thereof; and a repeating function for performing the erroneous detection checking operation once or a plurality of times in a repeating fashion.

REFERENCES:
patent: 4864363 (1989-09-01), Shinada
patent: 6407523 (2002-06-01), Allan
patent: 6963705 (2005-11-01), Quinones
patent: 7660547 (2010-02-01), Takiguchi et al.
patent: 01-116659 (1989-05-01), None

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