Electrophotography – Diagnostics – Component present or mounted
Reexamination Certificate
2009-11-19
2010-12-14
Lee, Susan S (Department: 2884)
Electrophotography
Diagnostics
Component present or mounted
C347S116000, C399S049000, C399S072000, C399S111000, C399S301000
Reexamination Certificate
active
07853159
ABSTRACT:
An image forming apparatus including a plurality of detachable image forming devices each configured to form a color image, an image carrying device configured to carry the color images sequentially overlaid into a single color image, an exchange detecting device configured to detect an exchange operation of the plurality of detachable image forming devices, a test pattern reading device configured to read a predetermined test pattern formed by the plurality of detachable image forming devices on the image carrying device, and a controller configured to instruct the plurality of detachable image forming devices to form the predetermined test pattern on the image carrying device when the exchange detecting device detects the exchange operation, and to perform a color image position adjustment based on readings of the predetermined test pattern by the test pattern reading device.
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European Search Report dated Jul. 28, 2010, EP 10005490.
Hosokawa Jun
Kobayashi Kazuhiko
Shinohara Tadashi
Yamanaka Tetsuo
Lee Susan S
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
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