Image forming apparatus

Details Image forming apparatus Image forming apparatus

2007-05-08

2008-08-12

Tran, Huan H (Department: 2861)

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

C347S234000, C347S248000, C347S249000, C399S301000, C399S302000

Reexamination Certificate

active

07411597

ABSTRACT:
An image forming apparatus includes an intermediate transfer member position detection unit configured to detect a position of the intermediate transfer member to output an image forming operation start signal, a pattern detection unit configured to detect a registration correction pattern formed on the intermediate transfer member based on the image forming operation start signal, a misregistration variation detection unit configured to read the registration correction pattern detected by the pattern detection unit based on the image forming operation start signal and to generate a reference clock signal based on the read registration correction pattern, and a polygonal mirror drive motor control unit configured to adjust a rotation speed of the polygonal mirror drive motor based on the reference clock signal generated by the misregistration variation detection unit.

REFERENCES:
patent: 5515145 (1996-05-01), Sasaki et al.
patent: 5872586 (1999-02-01), Shio
patent: 7221894 (2007-05-01), Kishi
patent: 10-003188 (1998-01-01), None

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