Water-less lithographic raw plate
First Claim
1. A water-less lithographic raw plate comprising:
- a photosensitive layer and a silicone rubber layer which are laminated in this order onto a substrate,wherein the components of which said photosensitive layer and said silicone rubber layer are composed are laminated onto said substrate under production conditions selected to produce a peel bonding strength between the photosensitive layer and the silicone rubber layer between about 5 to 100 g/cm, and an initial elastic modulus of the photosensitive layer after completion of exposure between about 5 to 75 kgf/mm2.
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Abstract
The present invention relates to a water-less lithographic raw plate, in which a photosensitive layer and a silicone rubber layer are laminated in this order on a substrate, comprising: the peel bonding strength between the photosensitive layer and the silicone rubber layer being 5 to 100 g/cm, and the initial elastic modulus of the photosensitive layer after completion of exposure being 5 to 75 kgf/mm2. In the present invention, attention is paid to the peel bonding strength between the photosensitive layer and the silicone rubber layer before exposure, and it is intensified, while the photosensitive layer after completion of exposure is kept lower in elastic modulus, to provide a water-less lithographic printing plate excellent in printing durability and image reproducibility. Therefore, the water-less lithographic printing plate obtained is suitable for commercial web offset printing and newspaper web offset printing.
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Citations
9 Claims
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1. A water-less lithographic raw plate comprising:
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a photosensitive layer and a silicone rubber layer which are laminated in this order onto a substrate, wherein the components of which said photosensitive layer and said silicone rubber layer are composed are laminated onto said substrate under production conditions selected to produce a peel bonding strength between the photosensitive layer and the silicone rubber layer between about 5 to 100 g/cm, and an initial elastic modulus of the photosensitive layer after completion of exposure between about 5 to 75 kgf/mm2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification