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US 6,333,134 B1Granted
Multilayered photopolymer element including sensitivity controlling agents
AssigneeToyo Boseki Kabushiki Kaisha
InventorsYuji Taguchi, Toshiaki Fujimura, Hajime Kouda
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Abstract
A multilayered photopolymer element made up of at least a support, a photosensitive layer and a cover film. The photosensitive layer is composed of at least two layers and the uppermost layer in the photosensitive layer contains a sensitivity controlling agent bonded with a polymer. The shape of the shoulder at a relief top is made sharp-edged whereby a printing plate having excellent print quality without being thickened by impression is prepared.
Claims9
A multilayered photopolymer element comprising:
- at least a support;
- at least two adjacent photosensitive layers, and
- a cover film,
- wherein the uppermost photosensitive layer contains a sensitivity controlling agent bonded with a polymer,
- wherein said sensitivity controlling agent, which inhibits or terminates polymerization, is at least one of:
- a compound that can inhibit thermal polymerization;
- a compound that absorbs ultraviolet radiation, and
- a compound that increases sensitivity balance,
- wherein said sensitivity controlling agent has one or more functional group(s) capable of reacting with the polymer.
6 more elements
Dependencies are inferred from the claim text.