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:
Dec. 05, 1989
Filed:
Apr. 04, 1988
Applicant:
Inventors:
Kikuo Tsuchiya, Nishinomiya, JP;
Shingo Araki, Settsu, JP;
Masaji Inagaki, Ashiya, JP;
Yumi Kudoh, Osaka, JP;
Teijiro Kitao, Tondabayashi, JP;
Assignee:
Dainippon Ink and Chemicals, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503209 ; 427150 ; 427151 ; 428913 ; 428914 ; 503208 ;
Abstract
A novel thermosensitive recording sheet having a coated film containing a color-forming lactone compound, an acidic substance and a sensitizer, said sensitizer being an o-hydroxy aromatic acid ester represented by formula ##STR1## wherein R.sub.1 denotes an alkylene group, a cycloalkylene group, an oxyalkylene group, a thioalkylene group, a phenylene group, a xylylene group or a napthylene group, R.sub.2 denotes ##STR2##