Recording medium, exterior member, and method of recording on recording medium
AssigneeSony Corporation
InventorMitsunari Hoshi
Life of this patent
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Abstract
A recording medium according to one embodiment of the present disclosure includes a recording layer and an optical thin film. The recording layer includes a heat-sensitive color-developing composition and a photothermal conversion material. The photothermal conversion material absorbs a wavelength in an infrared region and generates heat. The optical thin film is provided on one surface of the recording layer. The optical thin film reflects the wavelength in the infrared region and transmits a wavelength in a visible region.
Claims12
A recording medium comprising:
- a recording layer that includes a heat-sensitive color-developing composition and a photothermal conversion material, the photothermal conversion material absorbing a wavelength in an infrared region and generating heat;
- and
- an optical thin film that is provided on one surface of the recording layer, the optical thin film reflecting the wavelength in the infrared region and transmitting a wavelength in a visible region,
- wherein the optical thin film includes two kinds of inorganic films that are alternately laminated, the two kinds of inorganic films having respective refractive indices different from each other in a wavelength range from the infrared region to the visible region.
An exterior member comprising
- at least a decorated surface provided with a recording medium disposed on a support base,
- the recording medium including
- a recording layer that includes a heat-sensitive color-developing composition and a photothermal conversion material, the photothermal conversion material absorbing a wavelength in an infrared region and generating heat, and
- an optical thin film that is provided on one surface of the recording layer, the optical thin film reflecting the wavelength in the infrared region and transmitting a wavelength in a visible region,
- wherein the optical thin film includes two kinds of inorganic films that are alternately laminated, the two kinds of inorganic films having respective refractive indices different from each other in a wavelength range from the infrared region to the visible region.
A method of recording on a recording medium comprising
- irradiating a recording medium with light including at least a wavelength in an infrared region to perform drawing on a recording layer, the recording medium including an optical thin film and the recording layer that are laminated in this order, the optical thin film reflecting the wavelength in the infrared region and transmitting a wavelength in a visible region, the recording layer including a heat-sensitive color-developing composition and a photothermal conversion material, the photothermal conversion material absorbing the wavelength in the infrared region and generating heat,
- wherein the optical thin film includes two kinds of inorganic films that are alternately laminated, the two kinds of inorganic films having respective refractive indices different from each other in a wavelength range from the infrared region to the visible region.
Dependencies are inferred from the claim text.