Thermal recording material
First Claim
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1. A heat-sensitive recording material comprising:
- (a) a transparent film;
(b) a heat-sensitive recording layer formed on one side of the transparent film, and containing an electron-donating compound, an electron-accepting compound, and a binder,the binder being a urethane-based resin and a styrene-butadiene-based resin;
(c) a protective layer formed on the heat-sensitive recording layer, and containing an aqueous resin as a main ingredient,the aqueous resin being an acetoacetyl-modified polyvinyl alcohol having a polymerization degree of 1500 to 3000 and a saponification degree of at least 95 mol %,the protective layer further containing a fluorine-containing surfactant and at least one compound selected from the group consisting of alkyl phosphate salts, waxes and higher fatty acid amides; and
(d) a backside layer formed on the other side of the transparent film, and containing a pigment and a binder,the heat-sensitive recording material containing, as the pigment, in the backside layer spherical resin particles having a mean volume particle diameter of 2 to 15 μ
m in an amount of 0.2 to 5.0 mass % of the backside layer,the average thickness of the backside layer being 0.5 to 10 μ
m and being less than or equal to the mean volume particle diameter of the spherical resin particles contained in the backside layer, andthe binder in the backside layer being a (meth)acrylamide-based resin binder having a glass transition temperature of 180 to 250°
C. and an ionomeric urethane-based resin, the ionomeric urethane-based resin being contained in an amount of 3 to 30 mass % of all the binders.
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Abstract
Disclosed is a heat-sensitive recording material comprising
- (a) a transparent film,
- (b) a heat-sensitive recording layer formed on one side of the transparent film, and containing an electron-donating compound, an electron-accepting compound, and a binder,
- (c) a protective layer formed on the heat-sensitive recording layer, and containing an aqueous resin as a primary component; and
- (d) a backside layer formed on the other side of the transparent film, and containing a pigment and a binder; the heat-sensitive recording material containing in the backside layer spherical resin particles having a mean volume particle diameter of 2 to 15 μm in an amount of 0.2 to 5.0 mass % of the backside layer.
29 Citations
17 Claims
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1. A heat-sensitive recording material comprising:
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(a) a transparent film; (b) a heat-sensitive recording layer formed on one side of the transparent film, and containing an electron-donating compound, an electron-accepting compound, and a binder, the binder being a urethane-based resin and a styrene-butadiene-based resin; (c) a protective layer formed on the heat-sensitive recording layer, and containing an aqueous resin as a main ingredient, the aqueous resin being an acetoacetyl-modified polyvinyl alcohol having a polymerization degree of 1500 to 3000 and a saponification degree of at least 95 mol %, the protective layer further containing a fluorine-containing surfactant and at least one compound selected from the group consisting of alkyl phosphate salts, waxes and higher fatty acid amides; and (d) a backside layer formed on the other side of the transparent film, and containing a pigment and a binder, the heat-sensitive recording material containing, as the pigment, in the backside layer spherical resin particles having a mean volume particle diameter of 2 to 15 μ
m in an amount of 0.2 to 5.0 mass % of the backside layer,the average thickness of the backside layer being 0.5 to 10 μ
m and being less than or equal to the mean volume particle diameter of the spherical resin particles contained in the backside layer, andthe binder in the backside layer being a (meth)acrylamide-based resin binder having a glass transition temperature of 180 to 250°
C. and an ionomeric urethane-based resin, the ionomeric urethane-based resin being contained in an amount of 3 to 30 mass % of all the binders. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification