Magnetic seal for a developing apparatus

Details Magnetic seal for a developing apparatus Magnetic seal for a developing apparatus

1991-07-09

1994-02-15

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118653, 355215, 355251, G03G 1506

Patent

active

052871487

ABSTRACT:
A developing apparatus for developing electrostatic images comprises a container for containing a developer comprising magnetic material. A rotatable member is provided which is rotatable in the container in contact with the developer, the rotatable member being supported on bearings. A stationary magnetic member is disposed out of position inside the container and adjacent to the bearing with a clearance from the rotatable member, the stationary member enclosing the rotatable member. The stationary member has first and second magnetic poles disposed adjacent to each other and having the same magnetic polarity to form a repelling magnetic field to form a magnetic brush of the developer in a clearance between the magnetic member and the rotatable member.

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