Developing device and image forming apparatus

Details Developing device and image forming apparatus Developing device and image forming apparatus

2007-09-28

2011-10-04

Porta, David (Department: 2884)

Electrophotography

Internal machine environment

Particle or contaminant control

C399S105000

Reexamination Certificate

active

08032052

ABSTRACT:
A developing device containing a developer holding body for executing developing by affixing developer to an image support body, a controlling unit for thinning a layer of developer and disposed to contact the developer holding body, a support unit for supporting the controlling unit, an elastic sealing unit provided with a contact surface contacting the support unit and disposed on an edge side of the controlling unit, and a guiding unit for controlling an installation direction of a developing blade member at a time when the developing blade member is mounted on the elastic sealing unit, provided with a guiding surface formed at a prescribed angle in relation to the contact surface of the elastic sealing unit. The present invention attempts to prevent developer leakage from between a controlling unit and a sealing unit.

REFERENCES:
patent: 5650841 (1997-07-01), Matsuda et al.
patent: 6473577 (2002-10-01), Higeta et al.
patent: 6721520 (2004-04-01), Higeta et al.
patent: 2006/0188286 (2006-08-01), Yuge
patent: 2006/0251445 (2006-11-01), Ueno et al.
patent: 2002-108089 (2000-04-01), None

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