Developing apparatus using magnetic developing poles having the

Details Developing apparatus using magnetic developing poles having the Developing apparatus using magnetic developing poles having the

1996-02-12

1996-11-05

Beatty, Robert

Electrophotography

Image formation

Development

G03G 1509

Patent

active

055719872

ABSTRACT:
A developing apparatus including a fixed permanent magnet member 4 having a plurality of magnetic poles on the surface and a non-magnetic cylindrical sleeve 5 which is rotated around the permanent magnet member 4 at a position opposing a movable image-bearing member 1 having an electrostatic latent image on the surface, to form a developing region Z; causing a developer 3 to be magnetically attracted onto a surface of the non-magnetic cylindrical sleeve 4, and rotating the non-magnetic cylindrical sleeve 4 to convey the developer 3 into the developing region Z, and developing the electrostatic latent image with the magnetic toner 3, the moving velocity of the developer 3 in the developing region Z being higher than the peripheral velocity of the non-magnetic cylindrical sleeve 5.

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