Image reading apparatus

Facsimile and static presentation processing – Natural color facsimile – Scanning

Reexamination Certificate

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Details

C358S461000, C358S504000, C358S505000, C358S518000

Reexamination Certificate

active

06958834

ABSTRACT:
An image reading device includes a light irradiation device that moves and scans a document while irradiating the light on the document table, a color CCD sensor which reads the reflecting light of the light from the light irradiating device and photoelectric converts it into plural color signals, and a correction device which executes the shading correction of plural color signals that are photoelectric converted by the color CCD sensor and at the same time, executes the color balance correction and the stray light correction. Further, at the same time with the shading correction executed using white document data comprising R, G, B signals of a white document in color equipment to the shading correction plate that are read and photoelectric converted by the color CCD sensor as desired values for the shading correction, this image reading device executes the color balance correction and the stray light correction.

REFERENCES:
patent: 4608595 (1986-08-01), Nakayama et al.
patent: 5077605 (1991-12-01), Ikeda et al.
patent: 5216498 (1993-06-01), Matsunawa et al.
patent: 6198841 (2001-03-01), Toyama et al.
patent: 6597472 (2003-07-01), Suzuki et al.
patent: 6785026 (2004-08-01), Terajima et al.
patent: 2003/0016881 (2003-01-01), Matsuura
patent: 6-57050 (1994-07-01), None

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