Heat-sensitive recording materials for infrared-laser recording comprising tricarbocyanine dye having at least two acidic groups
AssigneeFuji Photo Film Co., Ltd.
InventorsNoriyuki Hosoi, Koh Takeuchi, Yoshio Inagaki
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Abstract
A heat-sensitive recording material comprising on a support a heat-sensitive layer comprising color-forming component A, color-forming component B which forms a color by reacting with the color-forming component A, and a tricarbocyanine dye having at least two acidic groups, wherein the tricarbocyanine dye has an absorption maximum wavelength of 650 to 1300 nm in the heat-sensitive layer and has an absorption maximum wavelength 50 nm or more longer than that of an aqueous solution of the tricarbocyanine dye.
Claims5
A heat-sensitive recording material comprising on a support a heat-sensitive layer comprising a photolytic diazo compound and a coupler which forms a color by reacting with the photolytic diazo compound with heat, and a tricarbocyanine dye having at least two acidic groups, wherein the tricarbocyanine dye has an absorption maximum wavelength of 650 to 1300 nm in the heat-sensitive layer and has an absorption maximum wavelength 50 nm or more longer than that of an aqueous solution of the tricarbocyanine dye.
A heat-sensitive recording material comprising on a support a heat-sensitive layer comprising an electron donative precursor and an acidic substance which forms a color by reacting with the electron donative precursor with heat, and a tricarbocyanine dye having at least two acidic groups, wherein the tricarbocyanine dye has an absorption maximum wavelength of 650 to 1300 nm in the heat-sensitive layer and has an absorption maximum wavelength 50 nm or more longer than that of an aqueous solution of the tricarbocyanine dye.
Dependencies are inferred from the claim text.