Process for preserving planographic printing forms

Details Process for preserving planographic printing forms Process for preserving planographic printing forms

1981-02-18

1982-09-14

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 627, 430302, 430309, B41M 500

Patent

active

043493912

ABSTRACT:
This invention relates to an improved process for preserving a planographic printing form which is ready for printing. In the process, the planographic printing form is treated with an aqueous solution of a water-soluble, film-forming high-molecular weight organic compound and a hydrophilizing acid and is then dried. The hydrophilizing acid used is an organic phosphonic acid, in particular polyvinyl phosphonic acid, preferably in a concentration from 0.05 to 10 percent by weight. As the water-soluble, high-molecular weight organic compound gum arabic, dextrin or polyvinyl alcohol is appropriately used.

REFERENCES:
patent: 3900370 (1975-08-01), Germscheid et al.
patent: 4033919 (1977-07-01), Lawson

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