Electrophotography – Image formation – Transfer
Reexamination Certificate
2007-08-31
2010-12-07
Beatty, Robert (Department: 2852)
Electrophotography
Image formation
Transfer
Reexamination Certificate
active
07848687
ABSTRACT:
In an image forming device, a main controller unit controls the image forming device, a motor controller unit controls individually rotational speeds of a plurality of motors rotating image carriers respectively, and a deviation detection unit detects a deviation of the color image. In the main controller unit, a speed signal transmitting unit transmits a speed signal, indicating a target rotational speed for correcting the deviation, to the motor controller unit. An enabling-signal transmitting unit transmits, to the motor controller unit, a speed-change enabling signal after passing of a predetermined time from a time an imaging reference signal, which is indicative of a start and an end of an image region of each color, indicates an end of a corresponding image region immediately after transmission of the speed signal.
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European Search Report (dated Dec. 17, 2007) for counterpart European Patent Application 07115532.9-1240 is provided for the purposes of certification under 37 C.F.R. §§ 1.97(e) and 1.704(d).
Beatty Robert
Harness & Dickey & Pierce P.L.C.
Ricoh & Company, Ltd.
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