Electrophotography – Image formation – Combined or plural functions by single component
Reexamination Certificate
2005-06-07
2005-06-07
Grainger, Quana (Department: 2852)
Electrophotography
Image formation
Combined or plural functions by single component
C430S110400
Reexamination Certificate
active
06904251
ABSTRACT:
The image forming apparatus includes: a plurality of image forming units each having an image bearing member and a developing unit; and a transfer member provided to be able to contact the plurality of image bearing members. The toner used in at least one of the plurality of developing units contains a toner particle group with a particle size of 12.7 μm or more, a ratio of the toner particle group to the entire toner being 1.0% or less. Accordingly, incomplete transfer can be prevented.
REFERENCES:
patent: 5483327 (1996-01-01), Taya et al.
patent: 6115575 (2000-09-01), Kinoshita et al.
patent: 6505021 (2003-01-01), Shibuya et al.
patent: 2000-352845 (2000-12-01), None
Iida Kenichi
Kinoshita Masahide
Uyama Masao
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