Dry planographic printing plate

Details Dry planographic printing plate Dry planographic printing plate

1981-08-17

1982-11-09

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

430190, 430303, G03C 154, G03C 160, G03F 708

Patent

active

043585221

ABSTRACT:
Provided is a presensitized planographic printing plate requiring no dampening water for use in negative work which comprises a base substrate, a photosensitive layer secured to and overlying the base substrate, and containing an orthoquinonediazide compound and having a content of ethanol-soluble component not higher than 20% by weight, and a silicone rubber layer overlying the photosensitive layer through bonding component. When the printing plate is exposed through a negative film and then treated with a developer, the photosensitive layer in the exposed image areas is dissolved and the corresponding portion of the silicone rubber layer is also removed easily and is obtained image as an exact reproduction of the negative film. Dampening water is not required when printing is carried out.

REFERENCES:
patent: 3046120 (1962-07-01), Schmidt et al.
patent: 3511178 (1970-05-01), Curtin
patent: 3635709 (1972-01-01), Kobayashi
patent: 3759711 (1973-09-01), Rauner et al.
patent: 3859099 (1975-01-01), Petropoulos et al.
patent: 3945830 (1976-03-01), Yazawa et al.
patent: 3953212 (1976-04-01), Miyano et al.

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