Electrophotography – Control of electrophotography process – Control of charging
Reexamination Certificate
2007-10-23
2007-10-23
Gray, David M. (Department: 2852)
Electrophotography
Control of electrophotography process
Control of charging
C399S055000, C399S066000, C399S100000, C399S101000, C399S150000, C399S354000, C399S357000, C399S359000, C399S360000
Reexamination Certificate
active
10838592
ABSTRACT:
An image forming device includes an image forming unit that includes an image carrier which carries an electrostatic latent image, a developing unit which forms a developing nip by contacting with the image carrier and develops the latent image by using toner, a transfer unit which forms a transferring nip by contacting with the image carrier and transfers a toner image onto a recording paper, and a first driving unit which rotates the image carrier, the developing unit and the transfer unit. The image forming device also includes a laser scanner unit that includes a polygon mirror and a second driving unit which rotates the polygon mirror. In addition, the image forming device includes a first control unit that starts driving of the second driving unit at a same time as a start of driving of the first driving unit, and a second control unit that executes a cleaning sequence process to return toner adhered on the transfer unit back to the image carrier during a period from the start of the driving of the second driving unit until a print permitting signal is output by the laser scanner unit.
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Gray David M.
Hogan & Hartson LLP
LaBombard Ruth N
Murata Kikai Kabushiki Kaisha
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