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:
Mar. 07, 1995
Filed:
Jun. 08, 1993
Mitsuhiro Ikeda, Tokyo, JP;
Yasuro Yokota, Tokyo, JP;
Shigetoshi Hiraishi, Tokyo, JP;
Kazuyuki Iida, Tokyo, JP;
Hidekazu Sano, Tokyo, JP;
Mitsubishi Paper Mills Limited, Tokyo, JP;
Abstract
As a reversible heat-sensitive recording material which contains a normally colorless or palely colored electron donating dye precursor and an electron accepting compound capable of causing said dye precursor to change reversibly in color density due to the difference in cooling rate after heating, one in which images can be formed and erased with good contrast and images high in time stability can be maintained under environment of everyday life can be obtained by using a phenolic compound having at least one aliphatic hydrocarbon group of 6 or more carbon atoms as the said electron donating compound.