Full-color electrophotographic image forming apparatus

Details Full-color electrophotographic image forming apparatus Full-color electrophotographic image forming apparatus

2006-02-14

2008-03-04

Brase, Sandra L. (Department: 2852)

Electrophotography

Image formation

Treatment of developed image prior to transfer

C399S130000

Reexamination Certificate

active

07340205

ABSTRACT:
In image formation of a black-line image, the image is developed with black toner, and in addition parts of the black-line image corresponding to an intersection between at least two black lines and a middle portion of a black line are developed with toner of at least one of cyan, yellow, and magenta colors overlaid. This makes it possible to prevent central voids in a black-line image. In a black-line image transferred onto a transfer medium by this full-color image forming apparatus, not only are central voids eliminated, but degradation of image quality is also prevented.

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patent: 07-261568 (1995-10-01), None
patent: 2001-060044 (2001-03-01), None
patent: 2003-263069 (2003-09-01), None

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