Electrostatic printing assist system

Details Electrostatic printing assist system Electrostatic printing assist system

1989-07-19

1991-09-03

Burr, Edgar S.

Printing

Intaglio

Rotary

101489, 101DIG37, B41F 900

Patent

active

050442759

ABSTRACT:
A counter pressure cylinder including an electrostatic printing assist system, with the counter pressure cylinder including an insulating jacket having a conductive coating thereof over which a further coating is arranged having limited conductivity. A primary winding, concentric to an electrically grounded axle or shaft of the counter pressure cylinder, is disposed beside the counter pressure cylinder in a fixed fashion with respect to the printing unit, and a secondary winding is mounted concentrically to the electrically grounded shaft of the counter pressure cylinder at one end face of the counter pressure cylinder in a fixed fashion with respect to the counter pressure cylinder. An electrical connection of the secondary winding is connected to the axle of shaft of the counter pressure cylinder and another electrical connection is connected to the coating by way of a rectifier circuit.

REFERENCES:
patent: 2547706 (1951-04-01), Huebner
patent: 2558900 (1951-07-01), Hooper
patent: 3370546 (1968-02-01), Muller
patent: 3661081 (1972-05-01), Wright
patent: 4208965 (1980-06-01), Eichler et al.
patent: 4909147 (1990-03-01), George et al.

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