Image forming apparatus having different dots per unit area...

Details Image forming apparatus having different dots per unit area... Image forming apparatus having different dots per unit area...

2007-04-03

2007-04-03

Beatty, Robert (Department: 2852)

Electrophotography

Control of electrophotography process

Of plural processes

Reexamination Certificate

active

10786522

ABSTRACT:
An image-forming apparatus includes image-forming sections, a density detector, and a controller. Each image-forming section has an exposing unit and a developing unit. The image-forming section prints an image of a density detection pattern having a plurality of pattern segments of different duties. The image is printed on a print medium under a predetermined printing condition. The density detector outputs detection values indicative of densities of the plurality of pattern segments printed on the print medium. The controller determines a correction value based on the detection values and corresponding target values of density to modify the printing condition for the image-forming sections. The correction value may be a correction to the amount of light to be emitted from the exposing unit. The correction value may be a correction to the developing voltage to be supplied to the developing unit. The correction value may be weighted.

REFERENCES:
patent: 4894685 (1990-01-01), Shoji
patent: 5436705 (1995-07-01), Raj
patent: 5859933 (1999-01-01), Sasanuma et al.
patent: 5873010 (1999-02-01), Enomoto et al.
patent: 6021288 (2000-02-01), Okuno et al.
patent: 6285839 (2001-09-01), Tanaka et al.
patent: 6336008 (2002-01-01), Nakazato et al.
patent: 6564021 (2003-05-01), Nakai et al.
patent: 6731888 (2004-05-01), Suzuki et al.
patent: 0628887 (1994-12-01), None
patent: 05-244418 (1993-09-01), None
patent: 7-248659 (1995-09-01), None
patent: 11-223966 (1999-08-01), None

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