Developing apparatus which recycles used developer by effectivel

Details Developing apparatus which recycles used developer by effectivel Developing apparatus which recycles used developer by effectivel

1998-10-27

2000-06-20

Grimley, Arthur T.

Electrophotography

Image formation

Development

399252, 399267, G03G 1508, G03G 1509

Patent

active

060787686

ABSTRACT:
An apparatus for the development of electrostatic images includes a developer storing section, a developing sleeve, a first magnetic field generating member, a developer layer thickness regulator, a second magnetic field generating member and a developer conveying member. The second magnetic field generating member faces the developing sleeve and forms an attracting magnetic field to attract the carrier particles from the developing sleeve. The second magnetic field generating member, moreover, has a closer section located close to the developing sleeve and a farther section located far from the developing sleeve, the farther section being located downstream of the closer section with regard to the conveying direction. The strength of the attracting magnetic field at the farther section is stronger than that at the closer section so that the carrier particles are removed from the developing sleeve while the magnetic carrier particles is conveyed from the closer section to the farther section by the developing sleeve.

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patent: 5648840 (1997-07-01), Ikunami et al.
Patent Abstracts of Japan, vol. 008, No. 259 (p-317), 28 Nov. 1984 and JP 59-131954 A (Fuji Xerox KK), 28 Jul. 1984.
Patent Abstracts of Japan, vol. 016, No. 532 (P-1448), 30 Oct. 1992 and JP 04-198972 A (Minolta Camera Co. Ltd.), 20 Jul. 1992.

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