Toner transport roller

Electrophotography – Image formation – Development

Reexamination Certificate

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Reexamination Certificate

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07356293

ABSTRACT:
A toner transport roller (10) including a sealing member (3), for preventing leak of toner, which contacts a peripheral surface of a rubber roller (1) thereof slidably. The toner transport roller (10) contains 3 to 50 parts by mass of alumina for 100 parts by mass of an ionic-conductive rubber and a loss tangent-adjusting filler. The annular sealing member (3) is slidably fitted on both ends of the rubber roller (1) in an axial direction thereof. It is preferable that the specific gravity of the ionic-conductive rubber is set to not less than 1.2.

REFERENCES:
patent: 5794101 (1998-08-01), Watanabe et al.
patent: 5867755 (1999-02-01), Sato
patent: 6574444 (2003-06-01), Uehara et al.
patent: 6654576 (2003-11-01), Dougherty
patent: 6690900 (2004-02-01), Dougherty et al.
patent: 2003/0118364 (2003-06-01), Kamimura
patent: 2004/0106708 (2004-06-01), Mizumoto et al.
patent: 2004/0110617 (2004-06-01), Mizumoto
patent: 2004/0147383 (2004-07-01), Uesaka et al.
patent: 1428664 (2003-07-01), None
patent: 2002-91158 (2002-03-01), None
patent: 2002-278386 (2002-09-01), None
patent: 2004-170845 (2004-06-01), None

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