Electrophotography – Image formation – Development
Reexamination Certificate
2007-11-20
2007-11-20
Chen, Sophia S. (Department: 2852)
Electrophotography
Image formation
Development
C399S267000, C430S110400, C430S111400, C430S122100
Reexamination Certificate
active
11193128
ABSTRACT:
The developing device100includes a stirrer and transferor122, 124,a magnetic roller130,and a developing roller140, that are disposed in a housing110which contains the two-component developing agent including the magnetic carrier and the non-magnetic toner, wherein volumetric mean particle size of the non-magnetic toner is set in a range from 6 to 11 μm and proportion of toner particles not larger than 4 μm is set to 8% by number or less, thereby making it possible to prevent imaging defect (ghost) and sticking of the toner onto the developing roller from occurring.
REFERENCES:
patent: 3929098 (1975-12-01), Liebman
patent: 5740511 (1998-04-01), Todome
patent: 6295432 (2001-09-01), Inoue et al.
patent: 6485876 (2002-11-01), Takezawa et al.
patent: 7031642 (2006-04-01), Abe
patent: 2001/0055503 (2001-12-01), Kin et al.
patent: 2002/0025184 (2002-02-01), Ishikawa et al.
patent: 2003/0003387 (2003-01-01), Xu et al.
patent: 2003/0156862 (2003-08-01), Nishimura
patent: 2003/0161666 (2003-08-01), Nishizawa et al.
patent: 2004/0106058 (2004-06-01), Itoh
patent: 06-067546 (1994-03-01), None
patent: 2003-255710 (2003-09-01), None
patent: 2003-295613 (2003-10-01), None
patent: 2004-280092 (2004-10-01), None
Chen Sophia S.
Hogan & Hartson LLP
Kyocera Mita Corporation
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