Thermosensitive recording medium and exterior member

Patent metadata

Field	Value
Publication number	US-11865853-B2
Application number	US-201916759947-A
Country	US
Kind code	B2
Filing date	Aug 9, 2019
Priority date	Aug 31, 2018
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A thermosensitive recording medium according to an embodiment of the present disclosure includes: a recording layer that includes a coloring compound having electron-donating property, a developer having electron-accepting property, a photothermal conversion agent, and a polymer material; and a protective member that is stacked on the recording layer, and has a convexo-concave shape in a plane.

First claim

The invention claimed is:

1. A thermosensitive recording medium comprising:
a recording layer that includes a coloring compound having electron-donating property, a developer having electron-accepting property, a photothermal conversion agent, and a polymer material; and
a protective member that is stacked on and in contact with the recording layer,
wherein the protective member includes a protective member portion and a hollow structure, and
wherein the hollow structure of the protective member is in contact with the recording layer and defined by a first end and a second end of the protective member portion in contact with the recording layer.

2. The thermosensitive recording medium according to claim 1 , wherein a distance from a front surface of the protective member to the recording layer is different.

3. The thermosensitive recording medium according to claim 1 , wherein the recording layer includes a plurality of layers.

4. The thermosensitive recording medium according to claim 3 , wherein
the recording layer includes a first layer and a second layer as the plurality of layers, and
the first layer and the second layer include photothermal conversion agents of absorption wavelengths different from each other.

5. The thermosensitive recording medium according to claim 4 , wherein a thermal insulating layer is provided between the first layer and the second layer.

6. The thermosensitive recording medium according to claim 1 , wherein the coloring compound comprises a leuco dye.

7. The thermosensitive recording medium according to claim 1 , wherein the recording layer includes, as the developer, a developing/reducing agent that allows for coloring and decoloring the coloring compound.

8. The thermosensitive recording medium according to claim 1 , wherein a thickness of the protective member ranges from greater than 100 μm to 10 mm.

9. The thermosensitive recording medium according to claim 8 , wherein the thickness of the protective member ranges from 200 μm to 10 mm.

10. The thermosensitive recording medium according to claim 1 , wherein the protective member portion is a concave shape.

11. The thermosensitive recording medium according to claim 1 , wherein the protective member portion includes a linear region having a flat surface that is parallel to the recording layer.

12. The thermosensitive recording medium according to claim 1 , wherein the protective member portion includes a plurality of linear regions that are interconnected, wherein each of the linear regions has a flat surface that is not parallel to the recording layer.

13. An exterior member provided with a thermosensitive recording medium on at least one surface of a supporting base material, the thermosensitive recording medium comprising:
a recording layer that includes a coloring compound having electron-donating property, a developer having electron-accepting property, a photothermal conversion agent, and a polymer material; and
a protective member that is stacked on and in contact with the recording layer,
wherein the protective member includes a protective member portion and a hollow structure, and
wherein the hollow structure of the protective member is in contact with the recording layer and defined by a first end and a second end of the protective member portion in contact with the recording layer.

Assignees

• Sony Corp

Inventors

• Kurihara Kenichi
• Hirai Nobukazu

Classifications

• B41M5/305 Primary

  with reversible electron-donor electron-acceptor compositions · CPC title

• B41J2/442

  using lasers · CPC title

• B41J2/4753

  using thermosensitive substrates, e.g. paper · CPC title

• B41M5/28

  using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating {(B41M5/38271 takes precedence)} · CPC title

• B41M5/323

  Organic colour formers, e.g. leuco dyes · CPC title