Image forming apparatus and control method therefor

Details Image forming apparatus and control method therefor Image forming apparatus and control method therefor

2006-01-23

2009-11-17

Nguyen, Judy (Department: 2854)

Electrophotography

Document handling

Copy

C399S381000, C399S388000

Reexamination Certificate

active

07620361

ABSTRACT:
An image forming apparatus, which is capable of correctly and accurately detecting a sheet leading edge position and carrying out image formation in appropriate image write timing, includes a detection device disposed at a reference position upstream from the transfer position and detects the recording medium being conveyed. A determining device determines image write timing for forming the electrostatic latent image on the photosensitive drum based on a difference in position between a leading edge position of the recording medium detected by said detection device and the reference position. The detection device respectively include a plurality of light detecting pixels disposed in a recording medium conveying direction, and the leading edge position of the recording medium detected by the respective light detecting pixels.

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