Electrophotography – Diagnostics – Component present or mounted
Reexamination Certificate
2008-05-20
2008-05-20
Lee, Susan (Department: 2852)
Electrophotography
Diagnostics
Component present or mounted
C347S116000, C399S049000, C399S072000, C399S111000
Reexamination Certificate
active
07376363
ABSTRACT:
An image forming apparatus including a plurality of detachable image forming devices each for forming a color image, an image carrying device for carrying the color images sequentially overlaid into a single color image, an exchange detecting device for detecting an exchange of the image forming devices, a test pattern reading device for reading a predetermined test pattern formed by the image forming devices on the image carrying device, and a controller configured to instruct the image forming devices to form the predetermined test pattern when either the detecting device detects the exchange, the fixing temperature is lower than a predetermined temperature, a color print adjustment command is provided, or the total number of color prints is greater than that at the last color print adjustment, and to perform color image position adjustment based on readings of the predetermined test pattern by the test pattern reading device.
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Hosokawa Jun
Kobayashi Kazuhiko
Shinohara Tadashi
Yamanaka Tetsuo
Lee Susan
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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