Method of preparing lithographic printing plate
AssigneeFUJIFILM Corporation
InventorToshifumi INNO
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Abstract
A method of preparing a lithographic printing plate includes: exposing imagewise a lithographic printing plate precursor including a hydrophilic support and a photosensitive layer containing a spectral sensitizer, a polymerization initiator, a co-initiator, a polymerizable monomer and a binder polymer with a laser light source having an emission wavelength in a range of from 350 to 450 nm; and removing an unexposed area of the photosensitive layer in the presence of a developer having pH of from 9.1 to 11 and containing a carbonate ion, a hydrogen carbonate ion and at least one of a surfactant and a water-soluble polymer compound, and the co-initiator is a tribromoacetylamide compound.
Claims12
A method of preparing a lithographic printing plate comprising:
- exposing imagewise a lithographic printing plate precursor comprising a hydrophilic support and a photosensitive layer containing a spectral sensitizer, a polymerization initiator, a co-initiator, a polymerizable monomer and a binder polymer with a laser light source having an emission wavelength in a range of from 350 to 450 nm;
- and
- removing an unexposed area of the photosensitive layer in the presence of a developer having pH of from 9.1 to 11 and containing a carbonate ion, a hydrogen carbonate ion and at least one of a surfactant and a water-soluble polymer compound,
- wherein the co-initiator is a tribromoacetylamide compound.
Dependencies are inferred from the claim text.