Electrophotography – Control of electrophotography process – Of plural processes
Reexamination Certificate
2007-03-22
2009-06-16
Chen, Sophia S (Department: 2852)
Electrophotography
Control of electrophotography process
Of plural processes
C399S302000
Reexamination Certificate
active
07548704
ABSTRACT:
An image forming apparatus includes at least one image bearing member, an intermediate transfer member, a secondary transfer member, and at least one optical sensor. In the image forming apparatus, it is determined that output values of the respective amounts of toner detected by the at least one optical sensor are affected by an impact caused due to a separation of the secondary transfer member from the intermediate transfer member and the output values are ignored as image adjustment input information, when the secondary transfer member separates from the intermediate transfer member during any of writing, developing, and transferring the plurality of image adjustment patterns, if the output values fall outside a given range and an interval between the output values of adjacent image bearing members is substantially equal to a distance between the two adjacent image bearing members for the primary transfer.
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U.S. Appl. No. 12/112,525, filed Apr. 30, 2008, Koizumi et al.
Ariizumi Osamu
Enami Takashi
Fujimori Kohta
Hasegawa Shin
Hirayama Yushi
Chen Sophia S
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh Co. Ltd.
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