Toner usage control between differing image regions

Details Toner usage control between differing image regions Toner usage control between differing image regions

2010-03-01

2011-11-29

Brase, Sandra (Department: 2884)

Electrophotography

Image formation

Development

C399S053000

Reexamination Certificate

active

08068769

ABSTRACT:
A control part provides a first region in which an image is formed on an image carrier using only a dark-color toner. The control part provides a second region, which is adjacent to the first region, in which an image is formed using a dark-color toner and a light-color toner. The control part provides a third region in which an image is formed using only a light-color toner at the boundary of the first and second regions. The control part controls a latent-image forming unit, a light-color developing unit and a dark-color developing unit so as to form an image in which these regions are provided. The control part may provide a third region in which neither a light-color toner nor a dark-color toner is used at the boundary of the first and second regions.

REFERENCES:
patent: 5835819 (1998-11-01), Yamamoto
patent: 7672616 (2010-03-01), Fujita
patent: 2006/0140651 (2006-06-01), Hirobe et al.
patent: 5-035038 (1993-02-01), None
patent: 10-198137 (1998-07-01), None
patent: 2000-231279 (2000-08-01), None
patent: 2000-347476 (2000-12-01), None
patent: 2001-290319 (2001-10-01), None
patent: 2003-89238 (2003-03-01), None

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