Method of developing photopolymerizable printing plates and composition therefor
Assignee3D Agency, Inc.
InventorVictor L. Larimer
Life of this patent
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Abstract
A method and composition for developing a relief image formed by exposing a portion of a photopolymerizable layer to actinic radiation and removing the portion of the photopolymerizable layer not exposed to actinic radiation by washing the unexposed portion with a developer composition comprising a monoterpene, N-methylpyrrolidone and, optionally, an aromatic alcohol. A nonionic surfactant can also be included in the developer composition.
Claims17
A devloper composition consisting essentially of from 10 to 60 wt. % of a monoterpene, from 10 to 50 wt. % of N-methylpyrrolidone, from 1 to 35 wt. % of an aromatic alcohol and from 5 to 12 wt. % of a nonionic surfactant, said wt. % being based on the total weight of the developer composition and the weight ratio of N-methylpyrrolidone/aromatic alcohol being from about 4:1 to about 1:1.
The developer composition consisting essentially of from 10 to 60 wt. % of a monoterpene, from 10 to 50 wt. % of N-methylpyrrolidone, from 5 to 12 wt. % of a nonionic surfactant, from 10 to 60 wt. % of an organic solvent having an ether-ester functionality and from 0 to 35 wt. % of an aromatic alcohol, said wt. % being based on the total weight of the developer composition and, when the aromatic alcohol is present, the weight ratio of N-methylpyrrolidone/aromatic alcohol being from about 4:1 to about 1:1.
Dependencies are inferred from the claim text.