Negative planographic printing plate
AssigneeFuji Photo Film Co., Ltd.
InventorKeitaro Aoshima
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Abstract
There is provided a negative planographic printing plate which can be directly recorded based on digital data from computers and the like, excellent in storage stability, shows no reduction in sensitivity with the lapse of time, and has excellent face flatness. It comprises a substrate having disposed thereon a photosensitive layer which is obtained by applying a photosensitive layer application solution containing an infrared absorber, a compound which generates a radical or acid due to heat, a polymerizable compound or a crosslinking compound, and a silicon-based surfactant such as a siloxane/oxyethylene copolymer and the like, onto the substrate and drying the solution, and which is hardened by exposure to an infrared laser ray.
Claims20
A negative planographic printing plate comprising:
- a substrate, and
- a photosensitive layer disposed on the substrate, the photosensitive layer containing an infrared absorber, a compound which generate a radical or acid due to heat, a polymerizable compound or crosslinking compound, and a silicon-based surfactant.
A negative planographic printing plate comprising:
- a substrate and
- a photosensitive layer disposed on the substrate, the photosensitive layer being obtained by applying a photosensitive layer application solution containing an infrared absorber, a compound which generate a radical or acid due to heat, a polymerizable compound or crosslinking compound, and a silicon-based surfactant, onto the substrate and drying the solution, and by being hardened by exposure to an infrared laser ray.
A negative planographic printing plate according to claim 12, wherein said photosensitive layer contains a binder polymer, and said binder polymer is a linear organic polymer which is soluble in or swellable with water or weak alkali water.
Dependencies are inferred from the claim text.