Electrophotography – Image formation – Development
Reexamination Certificate
2007-08-21
2007-08-21
Brase, Sandra L. (Department: 2852)
Electrophotography
Image formation
Development
C399S265000, C399S279000
Reexamination Certificate
active
10974762
ABSTRACT:
An image-forming apparatus includes a toner-supplying roller and a developing roller that receives toner from the toner-supplying roller, the toner having either a glass transition point not higher than 67° C. or a softening point not higher than 120° C. The developing roller and toner-supplying roller are configured to meet a parameter F given by 1×105<F<7×105and F=θ×δ×Asp×(Vsp+Vdv) where θ is an angle of slide (degrees) of the developing roller, δis a nip (mm) formed in the toner-supplying roller in contact with the developing roller, Asp is a hardness (degrees) of a surface of the toner-supplying roller, the hardness being measured with an Asker Type F durometer, Vsp is a circumferential speed (mm/sec) of the toner-supplying roller, and Vdv is a circumferential speed (mm/sec) of the developing roller and is higher than 150 mm/sec.
REFERENCES:
patent: 4652508 (1987-03-01), Ober et al.
patent: 5114823 (1992-05-01), Tomura et al.
patent: 5557060 (1996-09-01), Okada et al.
patent: 5862444 (1999-01-01), Machida et al.
patent: 5978635 (1999-11-01), Azuma et al.
patent: 6049689 (2000-04-01), Ishii et al.
patent: 6163669 (2000-12-01), Aoki et al.
patent: 6178303 (2001-01-01), Ishii et al.
patent: 6198893 (2001-03-01), Ichikawa et al.
patent: 6345166 (2002-02-01), Sakaizawa et al.
patent: 6480692 (2002-11-01), Yamazaki et al.
patent: 6714754 (2004-03-01), Ozeki et al.
patent: 6740463 (2004-05-01), Shigemori et al.
patent: 6819899 (2004-11-01), Miyakawa et al.
patent: 10-239988 (1998-09-01), None
Brase Sandra L.
Oki Data Corporation
Rabin & Berdo PC
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