Recording medium and exterior member

Patent metadata

Field	Value
Publication number	US-12145388-B2
Application number	US-202017788076-A
Country	US
Kind code	B2
Filing date	Dec 18, 2020
Priority date	Dec 27, 2019
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

A recording medium according to an embodiment of the present disclosure includes: a recording layer including a leuco dye as a coloring compound; a first barrier film that is provided on each of one surface and another surface opposed to the one surface of the recording layer, and suppresses intrusion of moisture, oxygen, or both; and a second barrier film having chemical resistance and provided on a side surface of the recording layer continuously at least from a peripheral part of the one surface to a peripheral part of the other surface of the recording layer.

First claim

The invention claimed is:

1. A recording medium comprising:
a recording layer including a leuco dye as a coloring compound;
a first barrier film that is provided on each of one surface and another surface opposed to the one surface of the recording layer, and suppresses intrusion of moisture, oxygen, or both with the recording layer; and
a second barrier film having chemical resistance and provided on a side surface of the recording layer continuously at least from a peripheral part of the one surface to a peripheral part of the another surface of the recording layer,
wherein the side surface of the recording layer is inclined.

2. The recording medium according to claim 1 , wherein the second barrier film provided on the side surface of the recording layer has a film thickness of 16 μm or more and 33 μm or less.

3. The recording medium according to claim 1 , wherein a surface of the second barrier film provided on the side surface of the recording layer includes a curved surface.

4. The recording medium according to claim 3 , wherein the second barrier film provided on the side surface of the recording layer has a maximum film thickness of 33 μm or less.

5. The recording medium according to claim 3 , wherein the second barrier film on the side surface of the recording layer has a different curvature between a side of the one surface and a side of the another surface.

6. The recording medium according to claim 1 , wherein the second barrier film extends onto the one surface and a film thickness of the second barrier film extending onto the one surface is 10 μm or less.

7. The recording medium according to claim 1 , wherein the second barrier film extends onto each of the one surface and the other surface and a width of second barrier film extending on each of the one surface and the other surface is 33 μm or less from an end of the recording layer.

8. The recording medium according to claim 1 , wherein the second barrier film has a surface hardness of 6H or more.

9. The recording medium according to claim 1 , wherein the second barrier film is formed from an ultraviolet curable resin.

10. The recording medium according to claim 9 , wherein the ultraviolet curable resin comprises an organic-inorganic hybrid material.

11. The recording medium according to claim 10 , wherein the organic-inorganic hybrid material has a silsesquioxane skeleton represented by a composition formula [(RSiO 1.5 ) n ], wherein R is an organic group.

12. The recording medium according to claim 11 , wherein the silsesquioxane skeleton is represented by any one of the following formulae (1) to (5):

13. The recording medium according to claim 1 , wherein the first barrier film has a water vapor transmission rate of 0.001 g/m 2 /day or more and 10 g/m 2 /day or less.

14. The recording medium according to claim 1 , further comprising an ultraviolet absorbing layer, a hard coat layer, or both on the first barrier film provided on the one surface of the recording layer.

15. The recording medium according to claim 1 , wherein the recording layer includes multiple layers to be colored in mutually different colors.

16. The recording medium according to claim 1 , wherein the recording layer includes one or both of a reversible recording layer and an irreversible recording layer.

17. An exterior member comprising a support base and at least a recording medium on the support base, the recording medium including:
a recording layer including a leuco dye as a coloring compound;
a first barrier film that is provided on each of one surface and another surface opposed to the one surface of the recording layer, and suppresses intrusion of moisture, oxygen, or both with the recording layer; and
second barrier film having chemical resistance and provided on a side surface of the recording layer continuously at least from a peripheral part of the one surface to a peripheral part of the another surface of the recording layer,
wherein the side surface of the recording layer is inclined.

18. A recording medium comprising:
a recording layer including a leuco dye as a coloring compound;
a first barrier film that is provided on each of one surface and another surface opposed to the one surface of the recording layer, and suppresses intrusion of moisture, oxygen, or both with the recording layer; and
a second barrier film having chemical resistance and provided on a side surface of the recording layer continuously at least from a peripheral part of the one surface to a peripheral part of the another surface of the recording layer,
wherein a surface of the second barrier film provided on the side surface of the recording layer includes a curved surface.

19. The recording medium according to claim 18 , wherein the second barrier film provided on the side surface of the recording layer has a maximum film thickness of 33 μm or less.

20. The recording medium according to claim 18 , wherein the second barrier film on the side surface of the recording layer has a different curvature between a side of the one surface and a side of the another surface.

21. An exterior member comprising a support base and at least a recording medium on the support base, the recording medium according to claim 18 .

22. A recording medium comprising:
a recording layer including a leuco dye as a coloring compound;
a first barrier film that is provided on each of one surface and another surface opposed to the one surface of the recording layer, and suppresses intrusion of moisture, oxygen, or both with the recording layer; and
a second barrier film having chemical resistance and provided on a side surface of the recording layer continuously at least from a peripheral part of the one surface to a peripheral part of the another surface of the recording layer,
wherein the second barrier film is formed from an ultraviolet curable resin,
wherein the ultraviolet curable resin comprises an organic-inorganic hybrid material,
wherein the organic-inorganic hybrid material has a silsesquioxane skeleton represented by a composition formula [(RSiO 1.5 ) n ], and
wherein R is an organic group.

23. The recording medium according to claim 22 , wherein the silsesquioxane skeleton is represented by any one of the following formulae (1) to (5):

24. An exterior member comprising a support base and at least a recording medium on the support base, the recording medium according to claim 22 .

Assignees

• Sony Group Corp

Inventors

• Amago Hirohisa
• Mizuno Hiroshi
• Kaino Yuriko

Classifications

• B41M5/305

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

• B41M2205/28

  Storage stability; Improved self life · CPC title

• B41M2205/04

  Direct thermal recording [DTR] · CPC title

• B41M2205/40

  Cover layers; Layers separated from substrate by imaging layer; Protective layers; Layers applied before imaging · CPC title

• B41M5/443

  Silicon-containing polymers, e.g. silicones, siloxanes · CPC title