Developing apparatus having a regulating member

Details Developing apparatus having a regulating member Developing apparatus having a regulating member

1998-12-01

1999-11-30

Grimley, Arthur T.

Electrophotography

Image formation

Development

399258, G03G 1508

Patent

active

059957913

ABSTRACT:
The developing apparatus has: a development sleeve; a supply roller; a toner hopper; a stirring member; and a partition member. The partition member and a regulating blade form a space. The supply roller supplies toner to lower part of the space. Thereby, toner present in the proximity of the development sleeve circulates smoothly. Therefore, the following situation will be prevented: 1) since same toner particles are repeatedly stressed by regulation of the regulating blade, toner particles crack; 2) cracked tiny particles of toner melt and adhere to the development sleeve; or 3) the regulating blade gets stiff due to the cracked toner adhering thereto. Further, since constant amount of toner is always collected within the space, appropriate pressure of toner is applied at the regulating position when the regulating blade takes toner into the space.

REFERENCES:
patent: 4993829 (1991-02-01), Naganuma et al.
patent: 5239343 (1993-08-01), Sakemi et al.

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