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:
Jul. 07, 2009
Filed:
Apr. 08, 2004
Shigeru Oda, Ibaraki, JP;
Eiji Kawabata, Ibaraki, JP;
Takaaki Mori, Ibaraki, JP;
Tjang Kie Tan, Ibaraki, JP;
Hiroshi Sumitomo, Ibaraki, JP;
Yoshito Nakagawa, Ibaraki, JP;
Shigeru Oda, Ibaraki, JP;
Eiji Kawabata, Ibaraki, JP;
Takaaki Mori, Ibaraki, JP;
Tjang Kie Tan, Ibaraki, JP;
Hiroshi Sumitomo, Ibaraki, JP;
Yoshito Nakagawa, Ibaraki, JP;
Sanko Co., Ltd., Fukuoka, JP;
Abstract
The invention provides a heat-sensitive recording material, which is highly sensitive, is almost free of staining on the background, and gives a recorded image excellent in stability during storage, by using a finely divided sensitizer dispersion excellent in shelf stability produced in a short time with high volumetric efficiency. The invention relates to a method of producing a sensitizer dispersion, which comprises emulsifying and finely dividing a heat-sensitive recording sensitizer by melting under heating in an aqueous emulsifying dispersant, and then crystallizing the finely divided emulsified dispersion under rapid cooling, wherein the sensitizer is at least one member selected from the group consisting of 1,2-bis(phenoxy)ethane, 1,2-bis(3-methylphenoxy)ethane, 1,2-bis(4-methylphenoxy)ethane, p-benzylbiphenyl, di-p-methylbenzyl oxalate, and β-naphthyl benzyl ether.