Shading correcting means for image forming apparatus

Details Shading correcting means for image forming apparatus Shading correcting means for image forming apparatus

1995-10-13

1998-06-23

Wong, Peter S.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358406, 358504, 358455, 358448, 382312, H04N 1407

Patent

active

057711062

ABSTRACT:
There is provided by the present invention an image forming apparatus including a one-chip microcomputer having white reference data for a first sheet of copy fetched with shading gate arrays in a stable region for a halogen lamp, using said white reference data when forming an image for a first sheet of copy, and also having shading-corrected white data fetched for a second or subsequent sheet of copy each time an image is formed.

REFERENCES:
patent: 4654723 (1987-03-01), Nagano
patent: 4821099 (1989-04-01), Sakamoto
patent: 4868685 (1989-09-01), Ueno
patent: 5038225 (1991-08-01), Maeshima
patent: 5130822 (1992-07-01), Nagata et al.
patent: 5151796 (1992-09-01), Ito et al.
patent: 5325210 (1994-06-01), Takashima et al.
patent: 5530239 (1996-06-01), Konishi et al.

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