Lithographic printing plate precursor and method of use
OwnerYasushi Miyamotoinventor
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OwnerYasushi Miyamotoinventor
Estimating the term…
A negative-working lithographic printing plate precursor has a negative-working infrared radiation-sensitive image-recording layer that has a) two or more free radically polymerizable components; b) an initiator composition capable of generating free radicals; and c) one or more infrared radiation absorbing cyanine dyes. The a) two or more free radically polymerizable components comprise a combination of a urethane (meth)acrylate and a polyester (meth)acrylate, which together, comprise 75-100 weight % of all free radically polymerizable components. The weight ratio of the urethane (meth)acrylates to the polyester (meth)acrylates is from 90:10 to and including 35:65. The urethane (meth)acrylates comprise one or more urethane linkages and at least 4 acrylate or methacrylate ester groups. Each of the one or more polyester (meth)acrylates is free of a urethane linkage and is represented following structure (I). These precursors are less sensitive to ambient ozone and can be infrared radiation imaged and developed on-press during lithographic printing.
A negative-working lithographic printing plate precursor comprising an aluminum-containing substrate, and a negative-working infrared radiation-sensitive image-recording layer disposed on the aluminum-containing substrate,
A negative-working lithographic printing plate precursor comprising an aluminum-containing substrate comprising two or more aluminum oxide layers, and a negative-working infrared radiation-sensitive image-recording layer disposed as the outermost layer on the aluminum-containing substrate,
Dependencies are inferred from the claim text.