Magnetic brush developer apparatus

Details Magnetic brush developer apparatus Magnetic brush developer apparatus

1982-03-08

1984-08-14

Braun, Fred L.

Photocopying

Including fiber optics

118657, 118658, 355 4, G03G 1509

Patent

active

044653565

ABSTRACT:
Magnetic brush developer apparatus for selectively developing an electrostatic charge pattern on a member by contacting the member with particulate magnetic developer material. The apparatus includes an applicator for transporting developer material in juxtaposition with such member. An electromagnet is operatively associated with the applicator for establishing developer nap bristles on the applicator when energized. The electromagnet is selectively energized to establish nap bristles to develop a selected electrostatic charge pattern with developer material and deenergized to avoid development of any non-selected electrostatic charge pattern.

REFERENCES:
patent: 3233781 (1966-02-01), Grubbs
patent: 3570453 (1971-03-01), Nuzum
patent: 3572288 (1971-03-01), Turner
patent: 3717122 (1973-02-01), Hudson
patent: 3872829 (1975-03-01), Rattin
patent: 3918395 (1975-11-01), Fearnside
patent: 4077358 (1978-03-01), Kito
patent: 4260239 (1981-04-01), Peperstraete et al.
patent: 4266328 (1981-05-01), Harada et al.

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