Electrophotography – Control of electrophotography process – Control of developing
Reexamination Certificate
2011-06-21
2011-06-21
Porta, David P (Department: 2884)
Electrophotography
Control of electrophotography process
Control of developing
C399S072000, C399S094000, C399S097000
Reexamination Certificate
active
07965954
ABSTRACT:
A control unit controls a device that executes an image forming process, compares changes of each toner adhesion amount in an image-density-detection pattern image when a developing-bias control condition is changed, with respect to a toner adhesion amount in an image-density-detection pattern image in a normal status, performs a malfunction-occurrence prediction process according to the degree of each change of the densities, and displays the result.
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U.S. Appl. No. 12/210,715, filed Sep. 15, 2008, Takahashi et al.
Kasai Tadashi
Mizutani Takehide
Shiori Jun
Sugiyama Toshihiro
Takahashi Yutaka
Oblon, Spivak, McClelland, Maier & Neustad, L.L.P.
Porta David P
Ricoh & Company, Ltd.
Schmitt Benjamin
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