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:
Dec. 06, 2005
Filed:
Jul. 03, 2002
Masayuki Iwasaki, Shizuoka-ken, JP;
Tsutomu Watanabe, Shizuoka-ken, JP;
Hirofumi Mitsuo, Shizuoka-ken, JP;
Masayuki Iwasaki, Shizuoka-ken, JP;
Tsutomu Watanabe, Shizuoka-ken, JP;
Hirofumi Mitsuo, Shizuoka-ken, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A heat-sensitive recording material includes a support having successively disposed thereon: a heat-sensitive color-forming layer containing an electron-donating colorless dye and an electron-accepting compound; and a protective layer; wherein the heat-sensitive color-forming layer contains a water-soluble polymer and 4-hydroxybenzenesulfonanilide as the electron-accepting compound, and the protective layer contains at least one inorganic pigment selected from aluminum hydroxide, kaolin and amorphous silica. The electron-donating colorless dye is preferably at least one selected from 2-anilino-3-methyl-6-di-n-butylaminofluoran, 2-anilino-3-methyl-6-di-n-amylaminofluoran and 2-anilino-3-methyl-6-(N-ethyl-N-p-benzyl)aminofluoran.