Recording medium and method for producing recorded matter having three-dimensional image

Patent metadata

Field	Value
Publication number	US-12343758-B2
Application number	US-202318182533-A
Country	US
Kind code	B2
Filing date	Mar 13, 2023
Priority date	Mar 16, 2022
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

A recording medium for producing a recorded matter having a three-dimensional image comprises: a substrate; and a foaming layer being provided on the substrate and containing a foaming material which foams with heat and a binder resin. A contact angle of water to a surface of the foaming layer 30 seconds after the water is brought into contact with the surface of the foaming layer is 30° or more and 80° or less, and a ratio of a diameter of a water droplet 30 seconds after the water is brought into contact with the surface of the foaming layer to a diameter of the water droplet 0.01 seconds after the water is brought into contact with the surface of the foaming layer is 1.3 times or less.

First claim

What is claimed is:

1. A recording medium comprising:
a substrate; and
a foaming layer on the substrate and comprising a foaming material which foams with heat, and a binder resin,
wherein a contact angle of water to a surface of the foaming layer 30 seconds after the water is brought into contact with the surface of the foaming layer is 30° to 80°, and
a ratio of a diameter of a water droplet 30 seconds after the water is brought into contact with the surface of the foaming layer to a diameter of the water droplet 0.01 seconds after the water is brought into contact with the surface of the foaming layer is 1.3 times or less.

2. The recording medium according to claim 1 , wherein the foaming material is a foaming particle including: a shell layer containing a thermoplastic resin; and a volatile material encapsulated in the shell layer.

3. The recording medium according to claim 2 , wherein the thermoplastic resin is polyacrylonitrile, and the volatile material is isobutane.

4. The recording medium according to claim 1 , wherein the binder resin is at least one selected from the group consisting of acrylic resins, urethane resins, and polyacrylonitrile resins.

5. The recording medium according to claim 1 , wherein a glass transition temperature of the binder resin is lower than a foaming start temperature of the foaming material by 70° C. or more.

6. The recording medium according to claim 1 , wherein a foaming start temperature of the foaming material is 80° C. to 100° C.

7. The recording medium according to claim 1 , wherein a glass transition temperature of the binder resin is −10° C. to 10° C.

8. The recording medium according to claim 1 , wherein an arithmetic average roughness Ra of the surface of the foaming layer is 1.0 μm or more.

9. The recording medium according to claim 1 , wherein a Martens hardness of the foaming layer is 15 N/mm 2 or less.

10. The recording medium according to claim 1 , wherein a creep CIT1 of the foaming layer after an increase in load as measured under following conditions is 25 to 70:
indentation force F: 3.0 μm/20 s
creep time C: 20.0 s.

11. The recording medium according to claim 1 , wherein the contact angle of the water to the surface of the foaming layer 30 seconds after the water is brought into contact with the surface of the foaming layer is 30° to 75°.

12. The recording medium according to claim 1 , wherein the binder resin comprises a water-insoluble resin.

13. The recording medium according to claim 12 , wherein the binder resin further comprises a water-soluble resin.

14. The recording medium according to claim 1 , wherein the foaming layer further comprises a surfactant.

15. A method for producing a recorded matter having a three-dimensional image, comprising the steps of:
adding, to a recording medium including a substrate and a foaming layer being provided on the substrate and containing a foaming material which foams with heat, and a binder resin, a foam-promoting liquid containing a foam-promoting component which reduces a foaming start temperature of the foaming material and water; and
heating the foaming layer of the recording medium to which the foam-promoting liquid is added to cause the foaming material to foam, forming a three-dimensional image,
wherein a contact angle of water to a surface of the foaming layer 30 seconds after the water is brought into contact with the surface of the foaming layer is 30° to 80°, and
a ratio of a diameter of a water droplet 30 seconds after the water is brought into contact with the surface of the foaming layer to a diameter of the water droplet 0.01 seconds after the water is brought into contact with the surface of the foaming layer is 1.3 times or less.

16. The method according to claim 15 , wherein the foam-promoting component is at least one selected from the group consisting of 2-pyrrolidone, dimethyl sulfoxide, N,N-dimethylformamide, and N-methyl-2-pyrrolidone.

17. The method according to claim 15 , wherein the foam-promoting liquid is an aqueous foam-promoting liquid containing water.

18. The method according to claim 15 , wherein the contact angle of the water to the surface of the foaming layer 30 seconds after the water is brought into contact with the surface of the foaming layer is 30° to 75°.

Assignees

• Canon Kk

Inventors

• Herlambang Olivia
• Omagari Toshihiro
• Nagase Yoshiyuki
• Shiba Tetsufumi
• Tanaka Takatoshi
• Tanaka Arika

Classifications

• B41M5/502

  characterised by structural details, e.g. multilayer materials (supports, backcoats or intermediate layers for thermal dye transfer donor and receiver sheets B41M5/41, B41M5/42) · CPC title

• B41F23/04

  by heat drying, by cooling, by applying powders {(B41F23/005 takes precedence)} · CPC title

• B05D3/0272

  with ovens · CPC title

• C09K23/018

  Mixtures of two or more different organic oxygen-containing compounds · CPC title

• C09K23/42

  Ethers, e.g. polyglycol ethers of alcohols or phenols · CPC title