Image forming apparatus

Details Image forming apparatus Image forming apparatus

1996-10-09

1999-01-12

Bourdreau, Leo H.

Image analysis

Image enhancement or restoration

Artifact removal or suppression

382274, G06K 900

Patent

active

058599339

ABSTRACT:
When a gradation test pattern is read a predetermined period of time after the gradation test pattern was fixed, the correction amount can be controlled based on a stable image density, and an image with good gradation characteristics can be formed. A gradation test pattern including all color patterns is output in accordance with a gradation test pattern registered in a test pattern memory area, and at the same time, a timer is started. After an elapse of a predetermined period of time stored in a RAM, the output gradation test pattern is read by an original reader. On the basis of the read image density, a .gamma.-LUT is set.

REFERENCES:
patent: 4176363 (1979-11-01), Kasahara
patent: 4320964 (1982-03-01), Ishida et al.
patent: 4888636 (1989-12-01), Abe
patent: 4977414 (1990-12-01), Shimada et al.
patent: 5117308 (1992-05-01), Tsuchida et al.
patent: 5130935 (1992-07-01), Takiguchi
patent: 5142356 (1992-08-01), Usami et al.
patent: 5166786 (1992-11-01), Sakai et al.
patent: 5181260 (1993-01-01), Kurosu et al.
patent: 5258783 (1993-11-01), Sasanuma et al.
patent: 5528339 (1996-06-01), Buhr et al.
patent: 5557412 (1996-09-01), Saito et al.
patent: 5610639 (1997-03-01), Tadaka et al.

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