Heat mode sensitive imaging element for making positive working

Details Heat mode sensitive imaging element for making positive working Heat mode sensitive imaging element for making positive working

1999-03-29

2000-11-28

Funk, Stephen R.

Printing

Planographic

Lithographic printing plates

101462, 4302701, 430302, G03F 700

Patent

active

061520365

ABSTRACT:
The present invention is directed to a heat mode imaging element for making a lithographic printing plate including on a lithographic base with a hydrophilic surface, a first layer including a polymer, soluble in an aqueous alkaline solution, and a top layer on the same side of the lithographic base as the first layer. The top layer is IR-sensitive and unpenetrable for an alkaline developer. The first layer and the top layer may be one and the same layer. The top layer is characterized in that it contains at least one compound containing epoxy units in an amount between 20 and 500 mg/m.sup.2 and a hardener.

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patent: 6040113 (2000-03-01), Van Damme et al.
patent: 6040115 (2000-03-01), Bailey et al.

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