Preparing waterless lithographic printing masters by ink jet pri

Details Preparing waterless lithographic printing masters by ink jet pri Preparing waterless lithographic printing masters by ink jet pri

1974-12-16

1977-01-18

Coughenour, Clyde I.

Printing

Planographic

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

1014011, 156306, 346 75, 427144, 427258, 427387, B41C 110, G01D 1518

Patent

active

040033120

ABSTRACT:
Novel means for preparing waterless lithographic printing masters by ink jet imaging means are provided. A master is provided by depositing a silicone or other material which can be rendered ink releasing on a suitable master substrate by means of an ink jet printing apparatus, and curing the silicone to an elastomeric ink releasing condition. Alternatively, an ink jet printing apparatus can be employed to deposit in image configuration, a catalyst to an uncured silicone on a master substrate, a photopolymer to a cured silicone on a master substrate which photopolymer can be cured to combine with the silicone, or an imaging light insensitive shadow fluid to a light sensitive curable silicone coated on a master substrate whereby the background nonimaged areas can be cured and the shadow fluid and underlying silicone removed to reveal the ink accepting substrate.

REFERENCES:
patent: 2037825 (1936-04-01), Salfisberg
patent: 2512743 (1950-06-01), Hansell
patent: 2785081 (1957-03-01), Babiarz et al.
patent: 3179546 (1965-04-01), Fischer
patent: 3510340 (1970-05-01), Blake et al.
patent: 3694241 (1972-09-01), Guthrie et al.
patent: 3775115 (1973-11-01), Sorkin et al.

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