Electrophotography – Image formation – Photoconductive member
Reexamination Certificate
2005-08-16
2005-08-16
Chen, Sophia S. (Department: 2852)
Electrophotography
Image formation
Photoconductive member
C198S810010, C399S162000, C399S303000, C399S313000
Reexamination Certificate
active
06931227
ABSTRACT:
An image formation apparatus is provided with a photosensitive drum, an optical writing device which writes an image on the outer surface of the photosensitive drum, a developing device which develops the image using toner an intermediate transfer belt onto which the toner image on the photosensitive drum is transferred, a rotation angle detection unit which detects the rotation angle of the photosensitive drum, an eccentric detection unit which detects the amount eccentricity of the photosensitive drum from the rotary axis of the photosensitive drum, and a correction unit which, obtains eccentricity of the photosensitive drum based on the amount eccentricity, the rotation angle and the radius of the photosensitive drum, and corrects a distortion and a color offset in the toner image based on the obtained eccentricity.
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Chen Sophia S.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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