Segmented backing assembly for toning an electrostatic image

Details Segmented backing assembly for toning an electrostatic image Segmented backing assembly for toning an electrostatic image

1993-03-09

1994-03-22

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

118659, G03G 1510

Patent

active

052968995

ABSTRACT:
An apparatus for retaining a recording medium in close proximity to a toner applicator using a segmented backing support, wherein the backing support is comprised of several closely spaced backing segments. Each of the segments is elastically mounted above the recording medium such that the segments are pushed against the recording medium. The downward force exerted on the recording medium by the backing segments is sufficient to overcome the upward force generated on the recording medium by air and toner expelled from the surface of the toner applicator. As a result, the recording medium is kept close enough to the toner applicator such that air does not leak excessively from between the toner applicator and the recording medium. A plurality of the backing segments are arranged closely together such that the recording medium is pressed against the toner applicator along the entire surface of the toner applicator. The position of each of the backing segments is adjustable to variations in the surface of the toner applicator. Additionally, the backing segments may be used to control the voltage on the recording medium.

REFERENCES:
patent: 3929099 (1975-12-01), Szymber et al.
patent: 4172430 (1979-10-01), Barone
patent: 4262294 (1981-04-01), Hara et al.
patent: 4438444 (1984-03-01), Komada et al.

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