Printing plates

Details Printing plates Printing plates

G - Physics

03

C

96/219

G03C 5/17 (2006.01) G03F 7/40 (2006.01)

Patent

CA 1061160

IMPROVEMENTS IN O? RELATING TO PRINTING PLATES ABSTRACT OF THE DISCLOSURE A method of treating a plate comprising a substrate carrying an image includes the step of providing a shield on the plate prior to heating the plate so as to prevent contaminants contacting the plate during the heating step. The plate may be a radiation sensitive plate which has been image-wise exposed and developed and which comprises a substrate coated with a radiation sensitive layer comprising for example a quinone diazide and a novolak resin. The radiation sensitive plate may be for the production of a lithographic printing plate and the shield may be in the form of, for example, a layer of a salt such as sodium dodecyl phenoxy benzene disulphonate.

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