Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1996-07-22
1998-03-31
Baxter, Janet C.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
430325, 430964, 430906, 522 97, G03C 173, C08F 246
Patent
active
057337071
ABSTRACT:
The present invention provides a negative-working image recording material which can be used as a lithographic printing plate for so-called direct plate making process comprising directly making plate from digital signal such as computer signal. A novel negative-working image recording material is provided, comprising a high-molecular compound having a weight-average molecular weight of from 5,000 to 400,000 and a repeating unit represented by the following general formula (I), and a substance which absorbs light to generate heat: ##STR1## wherein R.sup.1 represents a hydrogen atom, a halogen atom, a cyano group (--CN) or an alkyl group; R.sup.2 represents an alkyl group, an aralkyl group or an aromatic ring group; L.sup.1 represents a single bond or a phenylene group; L.sup.2 represents an alkylene group, an alkenylene group or an aromatic ring group; X represents a single bond, --O--, --OCO--, --COO--, --CONR.sup.3 --, --CONR.sup.3 CO--, --CONR.sup.3 SO.sub.2 --, --NR.sup.3 --, --NR.sup.3 CO--, --NR.sup.3 SO.sub.2 --, --SO.sub.3 --, --SO.sub.2 NR.sup.3 -- or --SO.sub.2 NR.sup.3 CO--; and R.sup.3 represents a hydrogen atom, an alkyl group, an aralkyl group or an aromatic ring group. The negative-working image recording material according to the present invention can provide a lithographic printing plate which can be exposed to infrared laser to undergo heat mode writing and exhibits a high sensitivity and developability when developed with an aqueous developer.
REFERENCES:
patent: 5360835 (1994-11-01), Sato et al.
patent: 5360836 (1994-11-01), Chevallier et al.
Ashton Rosemary
Baxter Janet C.
Fuji Photo Film Co. , Ltd.
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