Recording medium and recording device
View Patent ↗A recording medium according to an embodiment includes a base material; a first color developing layer that is laminated on the base material, and absorbs light having a given wavelength to develop a color; a photothermal conversion layer that is laminated closer to an incident side of the light than the first color developing layer, transmits visible light, and absorbs the light for photothermal conversion; and a second color developing layer that is laminated closer to the incident side of the light than the first color developing layer, transmits visible light and the light, and develops a color by heat converted by the photothermal conversion layer.
1. A recording medium comprising:
a base material;
a first color developing layer that is laminated on the base material, and absorbs light having a given wavelength to develop a color;
a photothermal conversion layer that is laminated closer to an incident side of the light having a given wavelength than the first color developing layer, transmits visible light, and absorbs the light having a given wavelength for photothermal conversion; and
a second color developing layer that is laminated closer to the incident side of the light having a given wavelength than the first color developing layer, transmits visible light and the light having a given wavelength, and develops a color by heat converted by the photothermal conversion layer, wherein
the second color developing layer comprises a plurality of second color developing layers,
the first color developing layer forms a monochrome recording layer,
the plurality of second color developing layers form a multicolor recording layer,
the recording medium has a recording surface including a monochrome image region and a multicolor image region, and
the photothermal conversion layer is located corresponding to the multicolor image region.
2. The recording medium according to claim 1 , wherein
each of the plurality of second color developing layers is separated from another of the plurality of second color developing layers via an intermediate layer that adjusts an amount of heat transfer, and has a different color development threshold temperature from the other of the plurality of second color developing layers.
3. The recording medium according to claim 2 , wherein the plurality of second color developing layers are laminated such that the higher the color development threshold temperature that one of the plurality of second color developing layers exhibits, the larger the amount of heat the one of the plurality of second color developing layer receives from the photothermal conversion layer.
4. The recording medium according to claim 2 , wherein the plurality of second color developing layers are laminated such that the lower the color development threshold temperature that one of the plurality of second color developing layers exhibits, the further the one of the plurality of second color developing layer is from the photothermal conversion layer.
5. The recording medium according to claim 1 , wherein each of the plurality of second color developing layers is a thermosensitive color developing layer that transmits the light having a given wavelength and visible light.
6. The recording medium according to claim 1 , wherein the photothermal conversion layer contains a phthalocyanine-based material as a photothermal conversion material.
7. A recording medium comprising:
a base material;
a first color developing layer that is laminated on the base material, and absorbs light having a given wavelength to develop a color;
a photothermal conversion layer that is laminated closer to an incident side of the light having a given wavelength than the first color developing layer, transmits visible light, and absorbs the light having a given wavelength for photothermal conversion; and
a second color developing layer that is laminated closer to the incident side of the light having a given wavelength than the first color developing layer, transmits visible light and the light having a given wavelength, and develops a color by heat converted by the photothermal conversion layer, wherein
the second color developing layer comprises a plurality of second color developing layers,
each of the plurality of second color developing layers is separated from another of the plurality of second color developing layers via an intermediate layer that adjusts an amount of heat transfer, and has a different color development threshold temperature from the other of the plurality of second color developing layers,
the first color developing layer forms a monochrome recording layer,
the plurality of second color developing layers form a multicolor recording layer,
the number of the plurality of second color developing layers is at least three,
the plurality of second color developing layers form a full-color recording layer,
the recording medium has a recording surface including a monochrome image region and a multicolor image region, and
the photothermal conversion layer is located corresponding to the multicolor image region.