Developing apparatus

Details Developing apparatus Developing apparatus

1998-09-22

2000-04-04

Braun, Fred L.

Electrophotography

Image formation

Development

399104, 399277, G03G 1508, G03G 1509

Patent

active

060471549

ABSTRACT:
A developing apparatus includes a developing device having a first magnetic pole opposed to an image carrier on which an electrostatic latent image is formed, and a second magnetic pole of the developing device arranged at a predetermined angle to the first magnetic pole, for supplying the electrostatic latent image with a developing agent having toner and carrier, where the second magnetic pole is of one polarity. The carrier collection device has a third magnetic pole of a polarity opposite to that of the second magnetic pole of the developing device, a fourth magnetic pole of a polarity equal to that of the second magnetic pole of the developing device, and a fifth magnetic pole of a polarity opposite to that of the second magnetic pole of the developing device, for collecting the carrier on the image carrier by the third magnetic pole and for carrying the collected carrier, by the fourth and fifth magnetic poles, the fourth magnetic pole being arranged to be opposed to the second magnetic pole of the developing device in the carrier collection device.

REFERENCES:
patent: 4457257 (1984-07-01), Murakami et al.
patent: 4671641 (1987-06-01), Kohyama
patent: 4868607 (1989-09-01), Folkins et al.
patent: 5187529 (1993-02-01), Nakayama
patent: 5379094 (1995-01-01), Wing et al.
patent: 5404215 (1995-04-01), Bares
patent: 5503106 (1996-04-01), Kaneko
patent: 5752138 (1998-05-01), Wing et al.

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