Fabrication of waterless planographic plates by laser printing a

Details Fabrication of waterless planographic plates by laser printing a Fabrication of waterless planographic plates by laser printing a

1993-11-02

1995-10-03

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

To produce printing surface

G03G 1328

Patent

active

054551340

ABSTRACT:
The present invention pertains to planographic plates fabricated with a silicone coating which produces economical and durable waterless plates, when the coating is applied to plates imaged by xerographic toner, cured and allowed to properly develop. Such a plate has a very high resolution and an excellent ink repellency in the non-print zones. The process of the invention applies the silicone coating directly onto a plate imaged by laser printing, curing the silicone and then applying a solvent (developer) which penetrates through the silicone to the image. The imaging material is removed precisely, leaving a silicone stencil only in the desired, non-print areas. The silicone coating attaches directly to the base metal (aluminum oxide), producing a very durable coating having low, free-surface energy.

REFERENCES:
patent: 4179295 (1979-12-01), Takamizawa et al,
patent: 5139905 (1992-08-01), Legere-Krongauz

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