Developing apparatus having a limiting member for limiting and s

Details Developing apparatus having a limiting member for limiting and s Developing apparatus having a limiting member for limiting and s

1995-03-09

1996-12-10

Brase, Sandra L.

Photocopying

Contact printing

Light boxes

118657, 355245, G03G 1509

Patent

active

055836224

ABSTRACT:
The present invention is directed to the provision of a developing apparatus that can prevent copy quality degradation. The invention comprises a developing sleeve for supplying toner to a photoconductor drum surface, and a brush-thickness control member disposed in close proximity to the developing sleeve. The invention further includes limiting device, disposed adjacent to and upstream of the brush-thickness control member with reference to the rotating direction of the developing sleeve, for limiting the advance of the tip of an erected developer brush by pushing the tip toward the upstream side. Furthermore, there is provided, substantially below the limiting device, a guide end portion for receiving the whole or part of the developer limited by the limiting device and separated from the erected developer brush and for guiding the received developer in a direction moving away from the developing sleeve.

REFERENCES:
patent: Re34724 (1994-09-01), Hosono et al.
patent: 4660958 (1987-04-01), Egami et al.
patent: 4887131 (1989-12-01), Kinoshita et al.
patent: 4912513 (1990-03-01), Oka et al.
patent: 5034773 (1991-07-01), Nimura et al.
patent: 5097295 (1992-03-01), Tanaka
patent: 5119758 (1992-06-01), Inoue et al.
patent: 5187523 (1993-02-01), Osawa
patent: 5239343 (1993-08-01), Sakemi et al.
Patent Abstract of Japan, vol. 10, No. 34 (p-427), Feb. 8, 1986 (Abstract of Japanese Patent Publication No. 60-181754, to Mita Kogyo, published Sep. 17, 1985).

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