Electrophotography – Control of electrophotography process – Responsive to number of copies or passage of time
Reexamination Certificate
2005-03-15
2005-03-15
Lee, Susan (Department: 2852)
Electrophotography
Control of electrophotography process
Responsive to number of copies or passage of time
C399S053000, C399S127000, C399S282000
Reexamination Certificate
active
06868240
ABSTRACT:
To avoid developing ghost and selective developing without complicating a developing apparatus and to supply surly charged toner to a developing roll while unevenness of images is not generated to obtain stable images for a long time even when continuous printing, a method for developing in a hybrid developing apparatus is provided, which is characterized in that a data amount of each image, which an image forming apparatus prints and a number of paper sheets passed are detected and that an interval of the action of recovering and exchanging a toner layer on the developing roll to the magnetic roll after printing between paper sheets is variably set in accordance with a printing coefficient determined by the data amount and the number of paper sheets passed and further, a method for developing in a color tandem-type image forming apparatus provided with a plurality of the hybrid developing apparatuses for all different colors of toner, which are disposed along the moving direction of a transfer medium of images is provided, wherein after toner layers on the developing rolls of the all developing apparatuses are peeled off toward the magnetic rolls after developing, a thickness of the toner layer of the each developing apparatus is variably controlled at the beginning of developing in accordance with the image consistency of the developing apparatus having a highest image consistency among image data of toner colors.
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English Abstract JP 3113474.
English Abstract JP 59121077.
English Abstract JP 11231652.
English Abstract JP 2000081788.
English Abstract JP 7128983.
English Abstract JP 63249164.
English Abstract JP 10031366.
English Abstract JP 6067546.
English Abstract JP 7072733.
English Abstract JP 7092804.
English Abstract JP 2000250294.
Nishimura Toshinori
Ozawa Yoshio
Sakata Shoichi
Garces John C.
Kyocera Corporation
Lee Susan
Lutzker Joel E.
Schulte Roth & Zabel LLP
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