Image scanner for use in image forming apparatus

Details Image scanner for use in image forming apparatus Image scanner for use in image forming apparatus

2008-03-18

2008-03-18

Lee, Cheukfan (Department: 2625)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S474000, C358S444000, C358S475000, C358S486000, C358S497000

Reexamination Certificate

active

07345796

ABSTRACT:
An image scanner of the present invention corrects a lens position when a lens moving signal for moving a lens is obtained by extracting a luminance signal from an image signal output from a CCD sensor and an object is dislocated from a focus position of the lens at an optional position.

REFERENCES:
patent: RE31370 (1983-09-01), Mashimo et al.
patent: 5767989 (1998-06-01), Sakaguchi
patent: 6157468 (2000-12-01), Tsai et al.
patent: 6587227 (2003-07-01), Fullerton
patent: 6603580 (2003-08-01), Taillie
patent: 6762861 (2004-07-01), Lan
patent: 4-287561 (1992-10-01), None
patent: 2001-216467 (2001-08-01), None
U.S. Appl. No. 09/671,152, filed Jan. 16, 2001, Sasama.

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