Electrophotography – Control of electrophotography process – Control of developing
Reexamination Certificate
2011-01-11
2011-01-11
Gray, David M (Department: 2852)
Electrophotography
Control of electrophotography process
Control of developing
C399S044000, C399S046000, C399S053000, C399S083000
Reexamination Certificate
active
07869726
ABSTRACT:
An image forming apparatus performs prints image data. A dividing section divides the image data of a print job into a plurality of sub data areas m(i) (i=1 to n). A duty computing section computes a print duty for each of the plurality of sub data areas (m(1)-m(n)) based on the number of printed dots in the print job and a total number of printable dots in a printable area. A first power supply applies a first voltage to a developing roller. A second power supply applies a second voltage to the developer supplying roller. The voltage difference between the first and second voltages is determined in accordance with the print duty.
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Gray David M
Gray Francis
Oki Data Corporation
Rabin & Berdo PC
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