Developing apparatus and image forming apparatus provided...

Details Developing apparatus and image forming apparatus provided... Developing apparatus and image forming apparatus provided...

2008-09-19

2010-12-14

Tran, Hoan (Department: 2884)

Electrophotography

Internal machine environment

Particle or contaminant control

C399S120000

Reexamination Certificate

active

07853171

ABSTRACT:
A developing apparatus is provided with: a developing roller; and a recovering roller that is arranged so as to oppose the developing roller, recovers scattered toner, and stores negatively chargeable toner, wherein the recovering roller has its surface coated with a fluorine resin or a silicone resin, and is provided with a blade that removes the scattered toner, and a difference (A−C) between a work function (A) of the resin and a work function (C) of the blade is greater than or equal to 0.10 eV.

REFERENCES:
patent: 7555256 (2009-06-01), Ogawa et al.
patent: 2003/0148203 (2003-08-01), Suzuki et al.
patent: 2008/0199234 (2008-08-01), Hagi et al.
patent: 2008/0205941 (2008-08-01), Sakai
patent: H02-210472 (1990-08-01), None
patent: H07-319279 (1995-12-01), None

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