Electrophotography – Image formation – Transfer
Reexamination Certificate
2008-05-29
2009-11-03
Gray, David M (Department: 2852)
Electrophotography
Image formation
Transfer
C399S308000
Reexamination Certificate
active
07613418
ABSTRACT:
An image forming apparatus (10) includes image bearing members (20) having respective peripheral surfaces and arranged sequentially so that toner images of toners having different colors are formed on the peripheral surfaces, respectively, an endless belt (30) having a surface and so rotated that the toner images are sequentially transferred to the surface or a sheet (P) conveyed on the surface, transferring members (40) for transferring the toner images to the surface of the endless belt (30) or the sheet (P). The downstream-most image bearing member (20) from which the toner image is last transferred to the surface of the endless belt (30) or the sheet (P) is arranged so that a contact pressure of the downstream-most image bearing member (20) against the endless belt (30) becomes higher than contact pressures of the other image bearing members (20) against the endless belt (30).
REFERENCES:
patent: 6385427 (2002-05-01), Nakane
patent: 7254359 (2007-08-01), Iwakura et al.
patent: 2005/0185991 (2005-08-01), Iwakura et al.
patent: 2001-282014 (2001-10-01), None
patent: 2005-24936 (2005-01-01), None
patent: 2005-234229 (2005-09-01), None
Casella Anthony J.
Gray David M
Hespos Gerald E.
Kyocera Mita Corporation
Yi Roy
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