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. 18, 2001
Filed:
Jul. 19, 2000
Kenichi Hosaka, Tokyo, JP;
Jun Maruyama, Tokyo, JP;
Mitsubishi Paper Mills Ltd., Tokyo, JP;
Abstract
Disclosed is a reversible heat-sensitive recording material which is excellent in light resistance and is remarkably free from discoloration caused by exposure to light and erasing failure and which shows a high layer strength and has durability against repeated printing and erasing, the reversible heat-sensitive recording material having a support, a reversible heat-sensitive recording layer formed on the support and at least one protective layer formed thereon, the reversible heat-sensitive recording layer containing a normally colorless or slightly colored dye precursor and a reversible color developer capable of causing a reversible change in color density of the dye precursor on the basis of a difference in cooling rate after heating, wherein at least one of the said layers contains an isocyanate compound and an ultraviolet absorbent capable of reacting with the isocyanate compound to undergo crosslinking.