Image forming apparatus and color registration method thereof

Electrophotography – Image formation – Transfer

Reexamination Certificate

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Reexamination Certificate

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07616918

ABSTRACT:
An image forming apparatus, and a method for performing an auto color registration. The method includes inspecting a test pattern printed on a paper. A distance between two predetermined points in the test pattern is measured. An X offset in a horizontal direction, and a Y offset in a vertical direction paper transfer direction, are correctly set.

REFERENCES:
patent: 6903758 (2005-06-01), Kerxhalli et al.
patent: 7110687 (2006-09-01), Furukawa
patent: 7177585 (2007-02-01), Matsuzaka et al.
patent: 2003-136794 (2003-05-01), None

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