The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2000
Filed:
Nov. 17, 1998
Applicant:
Inventors:
Shigeo Fujita, Osaka, JP;
Jun-ichi Taniguchi, Osaka, JP;
Hiroshi Terao, Osaka, JP;
Yojiro Kumagae, Osaka, JP;
Assignee:
Yamamoto Chemicals, Inc, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ; F21V / ;
U.S. Cl.
CPC ...
540125 ; 540122 ; 540139 ; 540140 ; 252587 ;
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.