Plasma-jet imaging method

Details Plasma-jet imaging method Plasma-jet imaging method

1990-07-17

1991-11-05

Crowder, Clifford D.

Printing

Planographic

Lithographic plate making, and processes of making or using...

346159, B41C 105, B41C 110

Patent

active

050623648

ABSTRACT:
A method of imaging a lithographic plate having a printing surface comprises exposing the printing surface to plasma jet discharges between the plate and a plasma jet nozzle spaced close to the printing surface of the plate. These plasma jet discharges are sufficient to remove a layer or layers of the plate to thereby change the affinity of the printing surface for ink and/or water at the points thereof exposed to the discharges, thereby producing image spots on the plate.

REFERENCES:
patent: 3978492 (1976-08-01), Simm
patent: 4082902 (1978-04-01), Suzuki et al.
patent: 4718340 (1988-01-01), Love, III
patent: 4727388 (1988-02-01), Sheridon et al.

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