Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1998-11-17
2000-05-23
Shah, Mukund J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
540122, 540139, 540140, 252587, C09B 4704, F21V 904
Patent
active
06066729&
ABSTRACT:
A photothermal conversion material showing high sensitivity to the light of a semiconductor laser having an emission frequency band of 750 nm.about.900 nm with a high photothermal conversion efficiency and a planographic original plate fabricated by using the transducer are provided. This photothermal conversion material comprises a phthalocyanine compound of the following general formula (I) ##STR1## wherein R.sub.1 .about.R.sub.8 each represents alkyl or alkoxyalkyl; X.sub.1 .about.X.sub.8 each represents sulfur or NR.sub.9, where R.sub.9 is hydrogen or alkyl.
REFERENCES:
patent: 4824947 (1989-04-01), Stark
patent: 5705101 (1998-01-01), Oi et al.
patent: 5783694 (1998-07-01), Hagen et al.
Fujita Shigeo
Kumagae Yojiro
Taniguchi Jun-ichi
Terao Hiroshi
Shah Mukund J.
Sripada Pavanaram K
Yamamoto Chemicals, Inc
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