Magnetic brush development apparatus

Details Magnetic brush development apparatus Magnetic brush development apparatus

1985-12-11

1987-06-09

Pianalto, Bernard D.

Coating apparatus

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

With electromagnetic and/or electrostatic removal of...

355 3DD, G03G 1509

Patent

active

046712070

ABSTRACT:
Magnetic brush development apparatus for applying developer material to a latent image on a photoconductor includes a housing having a sump which receives a supply of developer material. A magnetic brush spaced from the sump applies the material to the latent image of a photoconductor as the photoconductor is moved past the magnetic brush. Developer material is fed to the brush through an elongate feed slot adjacent to the brush. A feed mechanism delivers developer material from the sump through the slot to the magnetic brush. The feed mechanism includes a rotatable shell and a plurality of magnets that are located within the shell and attract developer material to a portion of the shell. The shell has a deeply fluted outer surface that holds the developer material attracted to the shell as it is delivered from the sump to the slot. The fluted outer surface also assists in removing excess developer material from the area adjacent the slot. The development apparatus is compact and provides improved feeding of developer to the magnetic brush.

REFERENCES:
patent: 4022157 (1977-05-01), Rasekhi et al.
patent: 4086006 (1978-04-01), Hauser et al.
patent: 4194465 (1980-03-01), Tsukamoto et al.
patent: 4235193 (1980-11-01), Groen et al.
patent: 4301228 (1981-11-01), Kori et al.
patent: 4324483 (1982-04-01), Tagawa et al.
patent: 4453493 (1984-06-01), Sawayama et al.
patent: 4466728 (1984-08-01), Schlageter
patent: 4546060 (1985-10-01), Miskinis et al.

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