Process for desensitizing lithographic printing plates

Details Process for desensitizing lithographic printing plates Process for desensitizing lithographic printing plates

1983-10-05

1984-10-09

Hayes, Lorenzo B.

Printing

Planographic

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

101451, 106 2, B41N 308

Patent

active

044754604

ABSTRACT:
A process for desensitizing lithographic printing plates is described. The gum for the process comprises an aqueous solution containing a film-forming starch derivative modified with polyoxyethylene or a polyoxyethylene-polyoxypropylene copolymer. The gum reduces the number of spoiled copies printed and the amount of staining on non-image areas.

REFERENCES:
patent: 3860426 (1975-01-01), Cunningham et al.
patent: 4024085 (1977-05-01), Kobayashi et al.
patent: 4072527 (1978-02-01), Fan
patent: 4072528 (1978-02-01), Bratt
patent: 4095525 (1978-06-01), Taukada et al.
patent: 4123279 (1978-10-01), Kobayashi
patent: 4348954 (1982-09-01), Okishi

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