Developing apparatus with magnetic seal

Details Developing apparatus with magnetic seal Developing apparatus with magnetic seal

1998-10-27

2000-02-22

Beatty, Robert

Electrophotography

Internal machine environment

Particle or contaminant control

G03G 1508

Patent

active

060290307

ABSTRACT:
The present invention provides a developing apparatus comprising a developing container for containing magnetic developing agent, a developing agent bearing member provided at an opening portion of the developing container and adapted to bear and convey the magnetic developing agent, an internal magnet provided within the developing agent bearing member, and a magnetic seal member provided along a circumferential direction of the developing agent bearing member and adapted to prevent leakage of the developing agent at ends of the developing agent bearing member, and wherein the internal magnet and the magnetic seal member have magnetic poles of same polarities in the vicinity of a collecting inlet of the opening portion.

REFERENCES:
patent: 4213617 (1980-07-01), Salger
patent: 5790923 (1998-08-01), Oguma et al.
patent: 5812909 (1998-09-01), Oguma et al.

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