Image forming apparatus and output image density correction...

Details Image forming apparatus and output image density correction... Image forming apparatus and output image density correction...

2008-07-01

2008-07-01

Gleitz, Ryan (Department: 2852)

Electrophotography

Control of electrophotography process

Of plural processes

C399S044000

Reexamination Certificate

active

11420656

ABSTRACT:
An image forming apparatus including: an outputted image density control portion that forms a patch image and determines an outputted image density control condition based on a comparison result of the density of the patch image with a preliminarily set target value; a pixel count portion capable of counting the amount of image pixel at the time of image formation; a pixel count value accumulating memory portion that accumulates and stores the pixel count value; a toner supply portion; a toner supply amount measuring portion capable of measuring the amount of toner supplied to the developing device; a toner supply amount accumulating memory portion that accumulates and stores the toner supply amount; and a target value correcting portion that corrects the target value of the density of the patch image from the relation between a pixel count accumulating value and a toner supply amount accumulation value, is provided.

REFERENCES:
patent: 7058321 (2006-06-01), Kin
patent: 2006/0245770 (2006-11-01), Choi
patent: 5-210279 (1993-08-01), None
patent: 2004-318114 (2001-11-01), None
patent: 2004-109599 (2004-04-01), None

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