Image forming apparatus

Details Image forming apparatus Image forming apparatus

2009-11-05

2011-11-29

Gaworecki, Mark R (Department: 2884)

Electrophotography

Control of electrophotography process

Control of exposure

C399S066000, C399S167000

Reexamination Certificate

active

08068751

ABSTRACT:
An image forming apparatus that can improve image quality by correcting for variations in the potential characteristics of a photosensitive member and enhance the responsiveness of an image forming operation. The photosensitive member is rotated by a drive unit and exposed to light from an exposure unit. A first generation unit periodically generates a first signal. A second generation unit generates a second signal. A plurality of generation periods of the second signals are included in one generation period of the first signal. A control unit, while the photosensitive member is controlled to accelerate, counts the second signals in response to input of the first signal, identifies an exposure position when the photosensitive member is switched from the acceleration control to constant-speed control, reads correction data corresponding to the identified exposure position from a storage unit, and controls the light quantity of the exposure unit.

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patent: 2007-034233 (2007-02-01), None
patent: 2007-187829 (2007-07-01), None

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