Image forming apparatus including a belt-shaped image carrier

Details Image forming apparatus including a belt-shaped image carrier Image forming apparatus including a belt-shaped image carrier

2007-01-30

2007-01-30

Tran, Hoan (Department: 2852)

Electrophotography

Image formation

Transfer

C399S302000, C399S303000

Reexamination Certificate

active

10929454

ABSTRACT:
An image forming apparatus which includes an image carrier holding toner images of plural colors, and a transfer portion that transfers the toner images of plural of colors held on the image carrier onto a recording medium, wherein the image carrier is made of an elastic material, has a pattern image forming unit repeatedly forming a pattern image for color misregistration detection on the image carrier at a constant interval so as to set the pattern images within a length range of the recording medium, wherein one of the pattern images includes a first toner image group in which plural toner images of a first color is formed at a first interval, and a second toner image group in which plural toner images of a second color is formed at a second interval.

REFERENCES:
patent: 5995802 (1999-11-01), Mori et al.
patent: 6219517 (2001-04-01), Takahashi et al.
patent: 6674988 (2004-01-01), Kawanishi
patent: 2962088 (1999-08-01), None
patent: 2001-134040 (2001-05-01), None
patent: 2003-195712 (2003-07-01), None
patent: 2003-215877 (2003-07-01), None

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