Developing unit for developing a latent image formed on an image

Details Developing unit for developing a latent image formed on an image Developing unit for developing a latent image formed on an image

1995-07-19

1997-02-25

Grimley, Arthur T.

Electrophotography

Internal machine environment

Particle or contaminant control

399222, 399279, G03G 1506

Patent

active

056063970

ABSTRACT:
A developing unit having a pair of semicircular first sealing members longitudinally formed on a cylindrical portion of both ends of a toner conveying roller along an outer peripheral surface of a toner conveying roller such that a gap is set between the sealing members and a toner layer thickness determining plate in a frictional state. A pair of second sealing members are provided close to a position where the toner layer thickness determining plate faces the roller and at a position, opposite to a side facing the toner conveying roller. Each of the first and second sealing members applies predetermined pressure to the toner conveying roller, and each of the sealing members includes lubricating fine grains.

REFERENCES:
patent: 5073797 (1991-12-01), Ono et al.
patent: 5191170 (1993-03-01), Yoshida et al.
patent: 5210575 (1993-05-01), Kikuchi
patent: 5212521 (1993-05-01), Ogawa et al.
patent: 5324884 (1994-06-01), Honda et al.

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