Developing solvent for photopolymerizable printing plates
OwnerConstance Marie Hendrickson, David Calvin Bradfordinventors
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Abstract
Flexographic printing plates are produced by exposing the photopolymer plates to a light source and washing out (developing) the masked out, non-exposed areas with a solvent. The invention provides methyl ester solvents suitable for use in the development of photopolymer printing plates. The solvents, which include methyl esters alone or mixed with co-solvents and/or non-solvents, are effective in developing a large number of different photopolymer printing plates and can produce images superior to those obtained with commercially available solvents currently used in such applications.
Claims30
A method for the development of photopolymerizable flexographic relief printing plates comprising
- selecting a developing solvent, said developing solvent comprising at least one methyl ester;
- and
- washing an exposed flexographic relief printing plate with said developing solvent to develop and image by dissolving and washing away non-exposed photopolymerizable material.
A developing solvent for the development of photopolymerizable flexographic relief printing plates comprising at least one methyl ester effective to remove non-exposed photopolymerizable material.
Dependencies are inferred from the claim text.