Lithographic plate ink receptivity improving composition and met

Details Lithographic plate ink receptivity improving composition and met Lithographic plate ink receptivity improving composition and met

1977-01-24

1978-07-18

Welsh, John D.

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

101466, 106246, 106268, 106269, 106285, 96 76R, G03F 702

Patent

active

041013220

ABSTRACT:
A composition for improving the ink receptivity of lithographic printing images comprises an organic solvent liquid capable of softening the surface of the printing image and a film forming alkali-resistant oleophilic material such as a liquid hydrocarbon solution of a normally solid hydrocarbon or fat. The composition is for use in the case where the printing image is formed by alkaline development of an image-wise exposed radiation sensitive coating such as a phenol formaldehyde resin in admixture with a sensitiser. The composition may be applied before exposure to form an alkali resistant oleophilic layer on the radiation sensitive coating or it may be applied after image-wise exposure but before alkali development.

REFERENCES:
chemical Abstracts, vol. 72, (1970) 105876e.

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