Non-uniform charging of sheet material

Details Non-uniform charging of sheet material Non-uniform charging of sheet material

1975-03-24

1976-09-21

Blunk, Evon C.

Sheet feeding or delivering

Delivering

By electrostatic or magnetic conveyor

226 94, 355 3R, B65H 2916

Patent

active

039814980

ABSTRACT:
A roller having an outer textured cylindrical surface applies, by means of a constant current, a non-uniform charge pattern over the surface of a sheet of material such as, for example, sheets of paper or plastic as used in xerographic transparencies and/or over the surface of a conveying structure, such as a conveying belt, which moves the sheet material to, through, and/or beyond a xerographic transfer zone. The charge applied over the sheet material is of a polarity opposite to that of the charge applied to the conveying structure so that an electrostatic tacking force holds the sheet material on or adheres the sheet material to the conveying structure. Preferably the charge is applied over the surfaces of the sheet material and conveying structure which face each other.

REFERENCES:
patent: 2576882 (1951-11-01), Koole et al.
patent: 3172657 (1965-03-01), Brandt
patent: 3351340 (1967-11-01), Levine
patent: 3795441 (1974-03-01), Hoffman et al.
patent: 3846020 (1974-11-01), Fletcher
Scharf, Def. Pub. of Ser. No. 872573 filed 10-30-69.

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