Electrographic magnetic brush development method, apparatus and

Details Electrographic magnetic brush development method, apparatus and Electrographic magnetic brush development method, apparatus and

1983-07-01

1984-09-25

Welsh, John D.

Coating apparatus

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

With electromagnetic and/or electrostatic removal of...

430122, 355 3DD, G03G 1509

Patent

active

044730292

ABSTRACT:
Improved electrographic development is obtained in the presence of a development electrode field by predeterminedly rotating both the core and shell of a magnetic brush applicator to supply developer, of the kind comprising small particle, hard-magnetic carrier and electrically insulative toner, to an electrostatic imaging member which moves past a development station with predetermined linear velocity. In one preferred embodiment the core and shell are predeterminedly rotated so that the shell moves through the development zone at a rate preventing toner that is plated-out on the shell from affecting image development and so that the developer moves co-currently with the imaging member at a generally equal linear velocity.

REFERENCES:
patent: 3152924 (1964-10-01), Wanielista et al.
patent: 4235194 (1980-11-01), Wada et al.
patent: 4334497 (1982-06-01), Oka et al.
patent: 4345014 (1982-08-01), Oka et al.
patent: 4435494 (1984-03-01), Goto et al.
"Plain-Paper Copies Get Sharper Image with New Developer `Pana Fine Process`"; reprint of article from the National Technical Report, vol. 28, No. 4, Aug. 1982.

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