Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...
Patent
1997-04-21
1999-07-13
Chu, John S.
Radiation imagery chemistry: process, composition, or product th
Diazo reproduction, process, composition, or product
Composition or product which contains radiation sensitive...
430159, 4302731, 430302, 430944, 430945, G03F 711, G03C 1795
Patent
active
059225025
ABSTRACT:
According to the present invention there is provided an imaging element for making a lithographic printing plate comprising on a support having a hydrophilic surface a photosensitive layer and a thermosensitive layer, said thermosensitive layer being opaque to light for which said photosensitive layer has spectral sensitivity and said thermosensitive layer being capable of rendered transparent upon exposure to laser light characterised in that an intermediate layer being soluble or swellable in an aqueous medium is provided between said photosensitive layer and said thermosensitive layer.
REFERENCES:
patent: 571909 (1896-02-01), Fan
patent: 4132168 (1979-01-01), Peterson
patent: 5262275 (1993-11-01), Fan
patent: 5607814 (1997-03-01), Fan et al.
patent: 5691114 (1997-11-01), Burberry et al.
Damme Marc Van
Nouwen Thomas
Sap Wim
Vermeersch Joan
Agfa-Gevaert N.V.
Chu John S.
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