Developing apparatus

Details Developing apparatus Developing apparatus

1988-03-31

1990-03-27

Beck, Shrive

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

355251, G03G 1509

Patent

active

049111000

ABSTRACT:
A developing apparatus has a rotatable, non-magnetic sleeve positioned opposite to an electrostatic latent image-bearing member moving in one direction; a magnet member having a plurality of magnetic poles, one of which serves as a main magnetic pole positioned in a developing area, and being stationary in the sleeve; and a container for a magnetic developer which is supplied onto the sleeve, the magnet member generating near the main magnetic pole on the sleeve a magnetic attraction force having a circumferential distribution which shows (a) a minimum value F.sub.1 near the center of the main magnetic pole and (b) a maximum value F.sub.2 downstream of a position at which the image-bearing member is the closest to the sleeve, with respect to the rotational direction of the sleeve.

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patent: 4356245 (1982-10-01), Hosono et al.
patent: 4378754 (1983-04-01), Rasekhi et al.
patent: 4558294 (1985-10-01), Yamashita
patent: 4640880 (1987-02-01), Kawanishi et al.

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