Electrostatic latent image developing apparatus

Details Electrostatic latent image developing apparatus Electrostatic latent image developing apparatus

1990-05-31

1991-09-24

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118658, 355253, G03G 1509

Patent

active

050517821

ABSTRACT:
A developing apparatus for developing an electrostatic latent image formed on an image bearing member includes a rotatable developer carrying member for being supplied with developer in a developer container and for carrying the developer through a developing zone. A magnet is stationarily disposed in the developer carrying member. The magnet has a first magnetic pole for forming a magnetic field in the developing zone, a second magnetic pole disposed downstream thereof with respect to a rotational direction of the developer carrying member and having a magnetic polarity opposite thereto, and a third magnetic pole disposed downstream of the second magnetic pole with respect to the direction and disposed adjacent to the second magnetic pole. The second magnetic pole has a magnetic flux density satisfying

REFERENCES:
patent: 4583490 (1986-04-01), Kan et al.
patent: 4825241 (1989-04-01), Saijo et al.
patent: 4887131 (1989-12-01), Kinoshita et al.
patent: 4928146 (1990-05-01), Yamada
patent: 4960070 (1990-10-01), Nishimura

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