Image forming apparatus and image forming method

Electrophotography – Image formation – Development

Reexamination Certificate

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Details

C430S105000

Reexamination Certificate

active

07979010

ABSTRACT:
Provided is an image forming apparatus including at least a latent image bearing member, a latent electrostatic image forming unit, a developing unit which includes at least a developing roller and a supply roller, and a transfer unit, wherein both of a diameter R (mm) of the developing roller and a diameter R′ (mm) of the supply roller are 12 mm or less; the toner contains at least a binder resin, a wax, and a colorant with the wax having a melting point of 75° C. or less; an amount of the wax exposed on a surface of the toner is 10 mg/g to 30 mg/g; and when a diameter (mm) of the developing roller is represented by R the toner has a torque T (mNm) satisfying the inequation, 20/R<T<27/R, at a void rate of 58% as measured by a torque measurement method using a conical rotor.

REFERENCES:
patent: 5508788 (1996-04-01), Watanabe et al.
patent: 2005/0220499 (2005-10-01), Kawahara et al.
patent: 2006/0204882 (2006-09-01), Nozaki et al.
patent: 2006/0210902 (2006-09-01), Nakamura et al.
patent: 2006/0275686 (2006-12-01), Kadota et al.
patent: 2006/0292474 (2006-12-01), Mikuriya et al.
patent: 2007/0026335 (2007-02-01), Yamamoto et al.
patent: 2007/0059625 (2007-03-01), Yamamoto et al.
patent: 2007/0122729 (2007-05-01), Katoh et al.
patent: 2007/0148568 (2007-06-01), Kadota et al.
patent: 2007/0190443 (2007-08-01), Hagi et al.
patent: 2007/0207399 (2007-09-01), Kadota et al.
patent: 2007/0212630 (2007-09-01), Yasunaga et al.
patent: 2007/0217842 (2007-09-01), Kato et al.
patent: 2007/0238042 (2007-10-01), Yasunaga et al.
patent: 2008/0038656 (2008-02-01), Yasunaga et al.
patent: 2008/0063957 (2008-03-01), Murakami et al.
patent: 2008/0069605 (2008-03-01), Fuwa et al.
patent: 2008/0069608 (2008-03-01), Katoh et al.
patent: 2008/0070149 (2008-03-01), Kato et al.
patent: 2008/0101823 (2008-05-01), Katoh et al.
patent: 2008/0145109 (2008-06-01), Murayama et al.
patent: 2008/0153018 (2008-06-01), Mikuriya et al.
patent: 2008/0159777 (2008-07-01), Fuwa et al.
patent: 2008/0175630 (2008-07-01), Yasunaga et al.
patent: 2008/0199234 (2008-08-01), Hagi et al.
patent: 2008/0226356 (2008-09-01), Yasunaga et al.
patent: 2008/0227009 (2008-09-01), Fuwa et al.
patent: 2008/0233506 (2008-09-01), Hagi et al.
patent: 2000-147898 (2000-05-01), None
patent: 2003-43725 (2003-02-01), None
patent: 2004-258053 (2004-09-01), None
patent: 3919541 (2007-02-01), None
U.S. Appl. No. 12/197,651, filed Aug. 25, 2008, Katoh, et al.

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