Magnetic-brush developing device

Details Magnetic-brush developing device Magnetic-brush developing device

1982-12-08

1984-05-29

Prescott, A. C.

Photocopying

Including fiber optics

355 14D, 118652, 118658, 118639, 430120, 430122, G03G 1509

Patent

active

044511345

ABSTRACT:
A magnetic-brush developing device wherein a rotary sleeve with permanent magnet incorporated therein is positioned inside a housing containing a developer, wherein the thickness of ears of developer formed on the peripheral surface of the rotary sleeve is regulated by a doctor blade, and wherein a rotor which forcibly removes surplus developer scraped off by the doctor blade is provided just in front of the doctor blade. The doctor blade regulating the thickness of ears of developer formed on the peripheral surface of the rotary sleeve with the permanent magnets incorporated therein is formed in the shape of a knife edge directed in the opposite direction to the direction of rotation of the rotary sleeve.

REFERENCES:
patent: 4006981 (1977-02-01), Fantuzzo
patent: 4162842 (1979-07-01), Wu
patent: 4337724 (1982-07-01), Hosono et al.
patent: 4364659 (1982-12-01), Noda
patent: 4370056 (1983-01-01), Hays

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