Method and apparatus for image forming capable of...

Details Method and apparatus for image forming capable of... Method and apparatus for image forming capable of...

2009-01-08

2010-02-16

Lee, Susan S (Department: 2852)

Electrophotography

Diagnostics

C347S116000, C399S301000

Reexamination Certificate

active

07664407

ABSTRACT:
A color image forming apparatus including a plurality of image forming devices, a transfer device including a transfer belt, a test pattern forming device configured to form, on the transfer belt, a test pattern including a plurality of marks formed by the image forming devices, an optical sensor configured to read the plurality of marks, and a checking device configured to determine whether reading by the optical sensor is performed correctly or not.

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