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:
Aug. 02, 2011
Filed:
Mar. 12, 2008
Kunihiko Hada, Shizuoka, JP;
Yoshikazu Kaneko, Numazu, JP;
Michiyo Fukushima, Tokyo, JP;
Kazuyuki Uetake, Mishima, JP;
Kunihiko Hada, Shizuoka, JP;
Yoshikazu Kaneko, Numazu, JP;
Michiyo Fukushima, Tokyo, JP;
Kazuyuki Uetake, Mishima, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The present invention provides a heat-sensitive recording material having a support, a heat-sensitive color-developing layer containing a leuco dye and a developer, and a protective layer, the heat-sensitive color-developing layer and the protective layer being formed on the support, wherein carboxylic-acid-modified polyvinyl alcohol with a weight average degree of polymerization of 100 to 400 and a modification degree of 0.2 mol % to 1.0 mol % is used as a dispersing agent for dispersing the leuco dye.