Heat-sensitive lithographic printing plate precursor
AssigneeFuji Photo Film Co., Ltd.
InventorsKeiji Akiyama, Hisashi Hotta, Kazuo Maemoto
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Abstract
A heat-sensitive lithographic printing plate precursor which comprises a substrate having thereon an anodic oxidation layer, with the printing plate precursor comprising a hydrophilic layer containing at least one kind of fine particles selected from the group consisting of heat-fusible hydrophobic thermoplastic fine particles, finely divided polymers having thermally reactive functional groups and microcapsules in which compounds having heat-reactive functional groups are encapsulated, and with the anodic oxidation layer having a surface over which micropores having an average pore size of 6 to 40 nm are uniformly distributed.
Claims13
A heat-sensitive lithographic printing plate precursor which comprises a substrate having thereon an anodic oxidation layer, said printing plate precursor comprising a hydrophilic layer containing at least one kind of fine particles selected from the group consisting of heat-fusible hydrophobic thermoplastic fine particles, finely divided polymers having thermally reactive functional groups and microcapsules in which compounds having heat-reactive functional groups are encapsulated, and said anodic oxidation layer having a surface over which micropores having an average pore size of 6 to 40 nm and obtained by a pore-widening treatment and a pore-sealing treatment are uniformly distributed.
A heat-sensitive lithographic printing plate precursor which comprises a substrate having thereon an anodic oxidation layer, said printing plate precursor comprising a hydrophilic layer containing at least one kind of fine particles selected from the group consisting of heat-fusible hydrophobic thermoplastic fine particles, finely divided polymers having heat-reactive functional groups and microcapsules in which compounds having heat-reactive functional groups are encapsulated, and said anodic oxidation layer having a surface over which micropores are subjected to a pore-widening treatment and then to an immersion treatment in an aqueous solution containing a hydrophilic compound wherein the micropores of the anodic oxidation layer are narrowed and/or sealed at the surface portion of the anodic oxidation layer.
A heat-sensitive lithographic printing plate precursor which comprises a substrate having thereon an anodic oxidation layer, said printing plate precursor comprising a hydrophilic layer containing at least one kind of fine particles selected from the group consisting of heat-fusible hydrophobic thermoplastic fine particles, finely divided polymers having heat-reactive functional groups and microcapsules in which compounds having heat-reactive functional groups are encapsulated, and said anodic oxidation layer having a surface over which micropores are subjected to a pore-widening treatment wherein the micropores of the anodic oxidation layer are narrowed and/or sealed at the surface portion of the anodic oxidation layer are uniformly distributed and further having on the surface a subbing layer comprising a water-soluble resin containing carboxyl or carboxylato groups and a water-soluble salt containing at least one metal selected from the group consisting of zinc, calcium, magnesium, barium, strontium, cobalt, manganese and nickel.
Dependencies are inferred from the claim text.