Process and apparatus for electrostatic substance transfer

Details Process and apparatus for electrostatic substance transfer Process and apparatus for electrostatic substance transfer

1996-08-16

1998-11-03

Burr, Edgar

Printing

Processes

Electric or magnetic transfer

101153, 101170, 118620, B41M 3514, B05B 5025

Patent

active

058293558

ABSTRACT:
A process and an apparatus for electrostatic substance transfer are proposed. A substance (4, 4') is taken from a substance container (9) by a substance transfer roller (1) and transferred onto a printing form cylinder (2). In order to improve the substance transfer, the printing form cylinder (2) is subjected to local negative charging by means of a spray electrode (6) near to the region in which the substance transfer takes place. The substance (4) is subsequently transferred from the printing form cylinder (2) onto a medium (7) which is pressed against the printing form cylinder (2) by a back-pressure cylinder (3).

REFERENCES:
patent: 2483462 (1949-10-01), Huebner
patent: 2558901 (1951-07-01), Hooper
patent: 3443517 (1969-05-01), Gundlach
patent: 3661081 (1972-05-01), Wright
patent: 3738266 (1973-06-01), Maeda et al.
patent: 4440082 (1984-04-01), Carey et al.
patent: 4697514 (1987-10-01), George et al.
patent: 5138345 (1992-08-01), Tohyama et al.

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