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:
Sep. 13, 1988
Filed:
Jul. 06, 1987
Yoshihiro Shimizu, Amagasaki, JP;
Naoto Arai, Ikeda, JP;
Kanzaki Paper Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A heat-sensitive record material having on a base sheet a recording layer which comprises a basic colorless chromogenic material and an acceptor in the state of that the colorless chromogenic material is contacted with the acceptor by heating to produce color images. The recording layer comprises at least one phenol compound represented by the following formula (I) together with the colorless chromogenic material and the acceptor, ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 radicals is hydrogen, C.sub.1-8 alkyl or C.sub.5-8 cycloalkyl, but at least one of R.sub.1, R.sub.2 and R.sub.3 radicals is C.sub.5-8 cycloalkyl; and each of R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 radicals is hydrogen or C.sub.1-8 alkyl.