Magnetic brush development apparatus for use in electrophotograp

Details Magnetic brush development apparatus for use in electrophotograp Magnetic brush development apparatus for use in electrophotograp

1979-09-11

1982-07-13

Lawrence, Evan K.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

118657, 355 3DD, G03G 1509

Patent

active

043388809

ABSTRACT:
A magnetic brush developing apparatus for use in an electrophotographic copying machine for developing an electrostatic image and utilizing a developer which is constituted by non-magnetic particles and magnetic particles. The apparatus includes a rotatable multipole magnetic member within a rotatable developing sleeve for transporting developing material affected by the magnetic member in a direction opposite the direction of rotation of the sleeve, at least one cleaning member for removing part of the developer which is at most only slightly affected by the magnetic member and transported in the direction of rotation of the sleeve, and at least one resilient scraping member for scraping the affected developer from the surface of the sleeve and being sufficiently resilient to allow the slightly affected developer material to pass between the scraping member and the sleeve so as to avoid buildup of the slightly affected developer between the scraping member and the sleeve.

REFERENCES:
patent: 3645770 (1972-02-01), Flint
patent: 3682538 (1972-08-01), Cade et al.
patent: 3918402 (1975-11-01), Ohta
patent: 3926516 (1975-12-01), Whited
patent: 4081571 (1978-03-01), Nishiyama et al.
patent: 4161923 (1979-07-01), Abbott et al.
patent: 4194465 (1980-03-01), Tsukamoto et al.
patent: 4235194 (1980-11-01), Wada et al.

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