Developing device having developing cylinder with weak magnetic

Details Developing device having developing cylinder with weak magnetic Developing device having developing cylinder with weak magnetic

1994-01-26

1995-07-18

Beatty, Robert

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

054343518

ABSTRACT:
A developing cylinder used in an electrophotographic developing device is improved in the efficiency of separation of a developer on its surface. A magnetic working force functioning to separate the developer from a sleeve surface is designed on the basis of a magnetic attraction force which results from a vector composite force consisting of a radial magnetic flux density and a tangential magnetic flux density on the sleeve surface and actually controls the behavior of the developer. The magnetic working force acting on a separation zone of weak magnetic flux density is made to act as a magnetic repulsion force functioning to separate the developer from the sleeve surface. The magnetic working force acting on a given area inclusive of a spot proximate to a photoconductor in a development zone is made to act as the magnetic repulsion force functioning to separate the developer from the sleeve surface. A magnet having a weak magnetic flux density pole is disposed in a developing zone and two strong magnetic flux density poles are disposed adjacent the weak magnetic flux density pole.

REFERENCES:
patent: 3988816 (1976-11-01), Tada
patent: 4166263 (1979-08-01), Harada et al.
patent: 4331100 (1982-05-01), Mochizuki et al.
patent: 4354454 (1982-10-01), Nishikawa
patent: 4525056 (1985-06-01), Itaya et al.
patent: 4825241 (1989-05-01), Saijo et al.
patent: 4851872 (1989-07-01), Murasaki et al.
patent: 4911100 (1990-03-01), Yamashita
patent: 4940014 (1990-07-01), Saijo et al.
patent: 4959692 (1990-09-01), Hayashi et al.

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