Electrophotography – Image formation – Photoconductive member
Reexamination Certificate
2011-08-30
2011-08-30
Gray, David (Department: 2852)
Electrophotography
Image formation
Photoconductive member
C399S067000, C347S116000
Reexamination Certificate
active
08010019
ABSTRACT:
An image forming apparatus that includes a plurality of image bearing members, a plurality of drive sources each including a drive gear, a plurality of driven gears, a visible image forming unit, an endless traveling member, a transfer unit, an image detection unit, and a controller. The controller controls rotation of the plurality of image bearing members according to a velocity fluctuation pattern of each surface of the image bearing members based on a detection time interval between predetermined visible detection images formed on the surface of the image bearing member and transferred therefrom to the endless traveling member detected by the image detection unit. Each of the plurality of driven gears includes a gear portion and an engaging portion integrated therewith. The gear portion includes a geared circumference and the engaging portion engages the image bearing member.
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Ebara Joh
Ehara Yasuhisa
Funamoto Noriaki
Kobayashi Kazuhiko
Sugiyama Keisuke
Gray David
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
Yi Roy
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