Apparatus for applying toner to an electrostatic image having im

Details Apparatus for applying toner to an electrostatic image having im Apparatus for applying toner to an electrostatic image having im

1993-05-25

1994-09-13

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

355245, 355251, 492 18, 118656, G03G 1509

Patent

active

053473477

ABSTRACT:
Apparatus for applying toner to an electrostatic image includes a sump for holding developer, which developer preferably includes a component having high coercivity and permanent magnetism. An applicator for moving the developer through a development zone includes a rotatable magnetic core and a sleeve around the core, which sleeve includes roughened portions leading to and away from the development zone and a smooth portion directly facing the development zone. The sleeve may also have smooth portions on its lateral crosstrack edges.

REFERENCES:
patent: 4597661 (1986-07-01), Yamashita
patent: 5084733 (1992-01-01), Katoh et al.
patent: 5162854 (1992-11-01), Hilbert et al.
patent: 5177536 (1993-01-01), Watanabe et al.
patent: 5196887 (1993-03-01), Hilbert et al.
patent: 5202729 (1993-04-01), Miyamoto et al.

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