Abstract:
Provided is a precursor for a direct printing-type waterless lithographic printing plate which shows high sensitivity not only immediately after the production of the precursor but also after the passage of time. A precursor for a direct printing-type waterless lithographic printing plate, which at least comprises a heat-sensitive layer and a silicone rubber layer that are laminated on a substrate in this order, wherein said heat-sensitive layer comprises a liquid foam which contains a liquid having a boiling point within a range of 210-270
Abstract:
The objective is to provide a direct drawing-type waterless lithographic printing original plate which is highly sensitive and is not susceptible to formation of blisters, namely a direct drawing-type waterless lithographic printing original plate which has a wide latitude. Provided is a direct drawing-type waterless lithographic printing original plate which has at least a heat-sensitive layer and a silicone rubber layer on a substrate in this order. The direct drawing-type waterless lithographic printing original plate is characterized in that the heat-sensitive layer contains non-photosensitive particles and the average particle diameter of the non-photosensitive particles is not less than 1/2 of the average film thickness of a portion of the heat-sensitive layer where the non-photosensitive particles are not present.
Abstract:
Provided is a precursor for a direct printing-type waterless lithographic printing plate which shows high sensitivity not only immediately after the production of the precursor but also after the passage of time. A precursor for a direct printing-type waterless lithographic printing plate, which at least comprises a heat-sensitive layer and a silicone rubber layer that are laminated on a substrate in this order, wherein said heat-sensitive layer comprises a liquid foam which contains a liquid having a boiling point within a range of 210-270
Abstract:
The objective is to provide a direct drawing-type waterless lithographic printing original plate which is highly sensitive and is not susceptible to formation of blisters, namely a direct drawing-type waterless lithographic printing original plate which has a wide latitude. Provided is a direct drawing-type waterless lithographic printing original plate which has at least a heat-sensitive layer and a silicone rubber layer on a substrate in this order. The direct drawing-type waterless lithographic printing original plate is characterized in that the heat-sensitive layer contains non-photosensitive particles and the average particle diameter of the non-photosensitive particles is not less than 1/2 of the average film thickness of a portion of the heat-sensitive layer where the non-photosensitive particles are not present.
Abstract:
Provided is a precursor for a direct printing-type waterless lithographic printing plate which shows high sensitivity not only immediately after the production of the precursor but also after the passage of time. A precursor for a direct printing-type waterless lithographic printing plate, which at least comprises a heat-sensitive layer and a silicone rubber layer that are laminated on a substrate in this order, wherein said heat-sensitive layer comprises a liquid foam which contains a liquid having a boiling point within a range of 210-270oC. A method for producing a precursor for a direct printing-type waterless lithographic printing plate, at least comprising: a step for applying a heat-sensitive layer composition solution, which contains a solvent having a solubility parameter of 17.0 (MPa)1/2 or less and a boiling point within a range of 210-270oC and a solvent having a solubility parameter exceeding 17.0 (MPa)1/2, onto a substrate optionally provided with a resin layer laminated thereon; a step for drying said heat-sensitive layer composition solution to form a heat-sensitive layer; and a step for applying a silicone rubber layer composition onto said heat-sensitive layer to form a silicone rubber layer.
Abstract:
Disclosed is a directly imageable waterless lithographic printing plate precursor including at least a heat sensitive layer and a silicone rubber layer formed on a substrate in this order, wherein the heat sensitive layer contains at least a novolac resin, a polyurethane and a light-to-heat conversion material, and also has a phase separation structure including at least a phase containing a novolac resin and a phase containing a polyurethane. The present invention provides a directly imageable waterless lithographic printing plate precursor which has high sensitivity and is less likely to cause blister, that is, having wide latitude.