Variable pressure back-plate for liquid toning

Details Variable pressure back-plate for liquid toning Variable pressure back-plate for liquid toning

1995-03-16

1997-08-19

Braun, Fred L.

Electrophotography

Image formation

Development

396604, G03G 1510

Patent

active

056598564

ABSTRACT:
An electrostatic recorder or copier that includes a vise which provides a variable clamping force to a recording medium, thereby capable of squeezing it between an applicator and a backplate. The vise is an expandable bladder expanding and retracting in response to fluid pressure. In this manner, movement of the recording medium may be prevented while purging toner from the applicator. A cross member is provided that is spaced apart from the applicator and the bladder is attached to it. The bladder includes a metal surface, which faces the applicator, capable of conforming to the profile, or irregularities, of the toning surface. The metal surface may be connected as an electrically grounded electrode and may include a single sheet of thin metal or a plurality of segmented metal sheets or plates.

REFERENCES:
patent: 3027821 (1962-04-01), Wright
patent: 3417686 (1968-12-01), Hildebrand et al.
patent: 3685412 (1972-08-01), Lehmann
patent: 3912833 (1975-10-01), Becker
patent: 4289092 (1981-09-01), McChesney et al.
patent: 5231455 (1993-07-01), Day
patent: 5268721 (1993-12-01), Day
patent: 5296899 (1994-03-01), Day

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