Developing device with developer sleeve facilitating developer s

Details Developing device with developer sleeve facilitating developer s Developing device with developer sleeve facilitating developer s

1987-05-13

1989-07-25

Grimley, Arthur T.

Photocopying

Contact printing

Light boxes

118658, G03G 1509

Patent

active

048518727

ABSTRACT:
A developing device includes a developing sleeve provided rotatably at a side of an electrostatic latent image support member, a supply member for supplying developer to the developing sleeve, a bristle height regulating member which confronts an upper portion of the developing sleeve so as to adjust an amount of the developer transported to a developing region and a plurality of magnets provided in the developing sleeve. The magnetic poles of the magnets not only extend in an axial direction of the developing sleeve but are arranged in a circumferential direction of the developing sleeve. The magnetic poles include a weak magnetic pole disposed adjacent to the upper portion of the developing sleeve and two strong magnetic poles between which the weak magnetic pole is interposed. The strong magnetic poles have a polarity different from that of the weak magnetic pole.

REFERENCES:
patent: 4615606 (1986-10-01), Nishikawa
patent: 4653427 (1987-03-01), Hosaka et al.

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