Method for electrostatic assistance in printing processes, and p

Details Method for electrostatic assistance in printing processes, and p Method for electrostatic assistance in printing processes, and p

1978-03-24

1980-06-24

Eickholt, E. H.

Printing

Antismut device

Anti-offset material application

346155, 355 3R, 250324, 101153, 101DIG13, 315307, B41F 504, G05F 100

Patent

active

042089654

ABSTRACT:
A method for electrostatic assistance of the printing process in printing machines, in which method a printing substrate, being of a material which is not electrically conductive, is passed between a printing cylinder coated with printing ink and a contact pressure roller which mechanically presses the substrate against the cylinder and which is provided with a non-conductive or weakly-conductive outer layer, during which procedure the application of a high voltage between the printing cylinder and at least one of the electrode arrangements running in a longitudinal direction to the contact pressure roller results in electrons and ions being sprayed by corona discharge onto the surface of the contact pressure roller, which, as a result of its rotating and/or its intrinsic conductivity conveys these charged particles into the printing gap and enables them to flow off over this gap, and also a corresponding printing machine.

REFERENCES:
patent: 3083121 (1963-03-01), Gauthier
patent: 3295441 (1967-01-01), Garnier
patent: 3370529 (1968-02-01), Michalchik
patent: 3411932 (1968-11-01), Malone et al.
patent: 3604925 (1971-09-01), Snelling
patent: 3619720 (1971-11-01), Coberley
patent: 3623123 (1971-11-01), Jvirblis
patent: 3661081 (1972-05-01), Wright
patent: 3812780 (1974-05-01), Borelli
patent: 4105320 (1978-08-01), Bean

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