Heat-sensitive recording material

Details Heat-sensitive recording material Heat-sensitive recording material

2005-12-06

2005-12-06

Hess, B. Hamilton (Department: 1774)

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified organic electron acceptor other than phenolic resin

C503S209000, C503S221000, C503S226000

Reexamination Certificate

active

06972272

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.

REFERENCES:
patent: 4585483 (1986-04-01), Ikeda et al.
patent: 4-20792 (1992-04-01), None
patent: 4-110188 (1992-04-01), None
patent: 7-314896 (1995-12-01), None
Japanese Abstract No. 2000247038, date Sep. 12, 2000.

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