Electrophotography – Image formation – Photoconductive member
Reexamination Certificate
2007-04-12
2009-12-22
Gray, David M (Department: 2852)
Electrophotography
Image formation
Photoconductive member
C399S049000, C399S301000, C399S299000
Reexamination Certificate
active
07636533
ABSTRACT:
A color image forming apparatus including: a plurality of drum-type photoconductors for forming an image in a different color on each peripheral surface and the photoconductors having at least two different diameters; a plurality of driving sections for driving each photoconductor at a driving speed in accordance with the diameter so that each photoconductor rotates at a predetermined peripheral speed; a correction signal output section for outputting a speed correction signal to correct a periodic pitch fluctuation included in each formed image; and a drive control section for controlling the driving section to correct the driving speed of each photoconductor by the speed correction signal, wherein the speed correction signal is a signal having the same cycle as a rotational cycle of each photoconductor.
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Eba Yutaka
Harada Yoshikazu
Ito Tetsushi
Kikuchi Yoshiteru
Matsuyama Kengo
Conlin David G.
Edwards Angell Palmer & & Dodge LLP
Gray David M
Sharp Kabushiki Kaisha
Tucker David A.
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