Reversible recording medium and exterior member

Patent metadata

Field	Value
Publication number	US-11667142-B2
Application number	US-201816772373-A
Country	US
Kind code	B2
Filing date	Dec 20, 2018
Priority date	Dec 20, 2017
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

A reversible recording medium according to an embodiment of the present disclosure includes a first recording layer to be colored in a first color, a second recording layer to be colored in a second color, the second color being different from the first color, and a first intermediate layer provided between the first recording layer and the second recording layer, the first intermediate layer including a plurality of layers respectively containing materials different from each other.

First claim

The invention claimed is:

1. A reversible recording medium comprising:
a first recording layer to be colored in a first color;
a second recording layer to be colored in a second color, the second color being different from the first color; and
a first intermediate layer provided between the first recording layer and the second recording layer, the first intermediate layer including a plurality of layers respectively containing materials different from each other,
wherein
the plurality of layers of the first intermediate layer including a multilayer structure in which a first layer, a second layer, and a third layer are stacked in order,
the second layer having a lower heat conductivity than the first layer and the third layer, and
the second layer contains a foam material.

2. The reversible recording medium according to claim 1 , wherein the second layer contains a hollow body inside the second layer.

3. The reversible recording medium according to claim 1 , wherein
the first recording layer, the first intermediate layer, and the second recording layer are stacked in this order over a support base, and
the reversible recording medium comprises a second intermediate layer between the support base and the first recording layer.

4. The reversible recording medium according to claim 3 , wherein the second intermediate layer including a multilayer structure in which a first layer, a second layer, and a third layer are stacked in order, wherein the second layer having a lower heat conductivity than the first layer and the third layer, and wherein the second layer contains a foam material.

5. The reversible recording medium according to claim 4 , further comprising:
a protective layer over the second recording layer; and
a third intermediate layer between the second recording layer and the protective layer.

6. The reversible recording medium according to claim 5 , wherein the third intermediate layer including a multilayer structure in which a first layer, a second layer, and a third layer are stacked in order, wherein the second layer having a lower heat conductivity than the first layer and the third layer, and wherein the second layer contains a foam material.

7. The reversible recording medium according to claim 1 , wherein the first recording layer and the second recording layer each include a coloring compound, a color developing/quenching agent, and a photothermal conversion agent.

8. The reversible recording medium according to claim 1 , wherein the first recording layer and the second recording layer each reversibly change between a recorded state and a deleted state.

9. The reversible recording medium according to claim 1 , further comprising
a third recording layer to be colored in a third color that is different from colors in which the first recording layer and the second recording layer are to be colored, wherein
the first recording layer, the second recording layer, and the third recording layer are stacked in this order, and the first intermediate layer is provided between the first recording layer and the second recording layer.

10. The reversible recording medium according to claim 1 , further comprising
a third recording layer to be colored in a third color that is different from colors in which the first recording layer and the second recording layer are to be colored, wherein
the first recording layer, the second recording layer, and the third recording layer are stacked in this order, and the first intermediate layer is provided between the second recording layer and the third recording layer.

11. An exterior member comprising a support substrate and a reversible recording medium on at least one surface of the support substrate,
the reversible recording medium comprising, as a recording layer that reversibly changes between a recorded state and a deleted state:
a first recording layer to be colored in a first color;
a second recording layer to be colored in a second color, the second color being different from the first color; and
a first intermediate layer provided between the first recording layer and the second recording layer, the first intermediate layer including a plurality of layers respectively containing materials different from each other,
wherein
the plurality of layers of the first intermediate layer including a multilayer structure in which a first layer, a second layer, and a third layer are stacked in order,
the second layer having a lower heat conductivity than the first layer and the third layer, and
the second layer contains a foam material.

Assignees

• Sony Corp

Inventors

• Hirai Nobukazu
• Kaino Yuriko
• Takagi Kenji

Classifications

• B41M5/44

  characterised by the macromolecular compounds · CPC title

• B41M5/305

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

• B41M2205/42

  Multiple imaging layers · CPC title

• B41M5/3335

  Compounds containing phenolic or carboxylic acid groups or metal salts thereof · CPC title

• B41M5/42 Primary

  Intermediate, {backcoat}, or covering layers {(B41M5/405 takes precedence; multilayer thermal transfer systems in general B41M5/38214)} · CPC title