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US 6,720,287 B2Granted
Heat sensitive recording material and microcapsule solution
AssigneeFuji Photo Film Co., Ltd.
InventorKoreshige Ito
Life of this patent
Estimating the term…
Abstract
The present invention discloses a heat-sensitive recording material comprising a thermal recording layer disposed on a substrate which layer contains at least a diazonium salt compound and a coupler which has a coupling reaction with the diazonium salt compound to develop a color, wherein the thermal recording layer microcapsules, which encapsulate the diazonium salt compound, an aromatic carboxylate represented by the following general formula (I) and an aromatic carboxylate represented by the following general formula (II).
Claims19
A heat-sensitive recording material comprising:
- a substrate;
- a thermal recording layer disposed on said substrate, which thermal recording layer contains a diazonium salt compound and a coupler that has a coupling reaction with the diazonium salt compound to develop a color;
- an aromatic carboxylate represented by the following general formula (I);
- and an aromatic carboxylate represented by the following general formula (II);
- wherein the diazonium salt compound is encapsulated in microcapsules together with the aromatic carboxylate represented by the general formula (I) and the aromatic carboxylate represented by the general formula (II);
- in which R1 represents one of a halogen atom, an alkyl groups having 1 to 20 carbon atoms, an alkenyl groups having 2 to 20 carbon atoms, an aralkyl groups having 7 to 20 carbon atoms, an alkoxy groups having 1 to 20 carbon atoms, an alkylcarbonyl groups having 2 to 20 carbon atoms, an alkylcarbonyloxy groups having 2 to 20 carbon atoms, an alkyloxycarbonyl groups having 2 to 20 carbon atoms, a cycloalkyl groups having 5 to 20 carbon atoms and an aryl groups having 6 to 20 carbon atoms;
- each of R2, R3, R4, R5 and R6 independently represents one of a hydrogen atom, a halogen atom, an alkyl groups having 1 to 20 carbon atoms, an alkenyl groups having 2 to 20 carbon atoms, an aralkyl groups having 7 to 20 carbon atoms, an alkoxy groups having 1 to 20 carbon atoms, an alkylcarbonyl groups having 2 to 20 carbon atoms, an alkylcarbonyloxy groups having 2 to 20 carbon atoms, a cycloalkyl groups having 5 to 20 carbon atoms, and an aryl groups having 6 to 20 carbon atoms;
- and n represents an integer of 0 to 4;
- in which R1 represents one of a halogen atom, an alkyl groups having 1 to 20 carbon atoms, an alkenyl groups having 2 to 20 carbon atoms, an aralkyl groups having 7 to 20 carbon atoms, an alkoxy groups having 1 to 20 carbon atoms, an alkylcarbonyl groups having 2 to 20 carbon atoms, an alkylcarbonyloxy groups having 2 to 20 carbon atoms, an alkyloxycarbonyl groups having 2 to 20 carbon atoms, a cycloalkyl groups having 5 to 20 carbon atoms and an aryl groups having 6 to 20 carbon atoms;
- each of R2, R3, R4, R5 and R6 independently represents one of a hydrogen atom, a halogen atom, an alkyl groups having 1 to 20 carbon atoms, an alkenyl groups having 2 to 20 carbon atoms, an aralkyl groups having 7 to 20 carbon atoms, an alkoxy groups having 1 to 20 carbon atoms, an alkylcarbonyl groups having 2 to 20 carbon atoms, an alkylcarbonyloxy groups having 2 to 20 carbon atoms, a cycloalkyl groups having 5 to 20 carbon atoms, and an aryl groups having 6 to 20 carbon atoms;
- and n represents an integer of 0 to 4.
8 more elements
A microcapsule solution for comprising an aromatic carboxylate represented by the following general formula (I), an aromatic carboxylate represented by the following general formula (II), and a diazonium salt compound in microcapsules of the microcapsule solution;
- in which R1 represents one of a halogen atom, an alkyl groups having 1 to 20 carbon atoms, an alkenyl groups having 2 to 20 carbon atoms, an aralkyl groups having 7 to 20 carbon atoms, an alkoxy groups having 1 to 20 carbon atoms, an alkylcarbonyl groups having 2 to 20 carbon atoms, an alkylcarbonyloxy groups having 2 to 20 carbon atoms, an alkyloxycarbonyl groups having 2 to 20 carbon atoms, a cycloalkyl groups having 5 to 20 carbon atoms and an aryl groups having 6 to 20 carbon atoms;
- each of R2, R3, R4, R5 and R6 independently represents one of a hydrogen atom, a halogen atom, an alkyl groups having 1 to 20 carbon atoms, an alkenyl groups having 2 to 20 carbon atoms, an aralkyl groups having 7 to 20 carbon atoms, an alkoxy groups having 1 to 20 carbon atoms, an alkylcarbonyl groups having 2 to 20 carbon atoms, an alkylcarbonyloxy groups having 2 to 20 carbon atoms, a cycloalkyl groups having 5 to 20 carbon atoms, and an aryl groups having 6 to 20 carbon atoms;
- and n represents an integer of 0 to 4;
- in which R1 represents one of a halogen atom, an alkyl groups having 1 to 20 carbon atoms, an alkenyl groups having 2 to 20 carbon atoms, an aralkyl groups having 7 to 20 carbon atoms, an alkoxy groups having 1 to 20 carbon atoms, an alkylcarbonyl groups having 2 to 20 carbon atoms, an alkylcarbonyloxy groups having 2 to 20 carbon atoms, an alkyloxycarbonyl groups having 2 to 20 carbon atoms, a cycloalkyl groups having 5 to 20 carbon atoms and an aryl groups having 6 to 20 carbon atoms;
- each of R2, R3, R4, R5 and R6 independently represents one of a hydrogen atom, a halogen atom, an alkyl groups having 1 to 20 carbon atoms, an alkenyl groups having 2 to 20 carbon atoms, an aralkyl groups having 7 to 20 carbon atoms, an alkoxy groups having 1 to 20 carbon atoms, an alkylcarbonyl groups having 2 to 20 carbon atoms, an alkylcarbonyloxy groups having 2 to 20 carbon atoms, a cycloalkyl groups having 5 to 20 carbon atoms, and an aryl groups having 6 to 20 carbon atoms;
- and n represents an integer of 0 to 4.
3 more elements
Dependencies are inferred from the claim text.