Developing apparatus and image forming apparatus

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

1996-10-15

1998-05-26

Smith, Matthew S.

Electrophotography

Image formation

Development

399265, G03G 1509

Patent

active

057582408

ABSTRACT:
A developing apparatus according to the present invention comprises a rotating developing sleeve, a developer supplying portion for supplying developer to the surface of the developing sleeve, a developer collecting portion for collecting the developer from the surface of the developing sleeve, the developer collecting portion and the developer supplying portion being vertically aligned, a pair of magnetic poles fixed in the developing sleeve, the pair of magnetic poles forming a triangle area which is surrounded by tangent lines at points where the magnetic poles have the maximum magnetic force, and a wall positioned between the developer supplying portion and the developer collecting portion, the edge of the wall being positioned in the triangle area formed by the pair of magnetic poles.

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patent: 4940014 (1990-07-01), Saijo et al.
patent: 5075729 (1991-12-01), Hayashi et al.
patent: 5143017 (1992-09-01), Haneda et al.
patent: 5503106 (1996-04-01), Kaneko

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