Transfer-printing ink and transfer-printing apparatus

Patent metadata

Field	Value
Publication number	US-10968357-B2
Application number	US-201816002902-A
Country	US
Kind code	B2
Filing date	Jun 7, 2018
Priority date	Jun 15, 2017
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

A transfer-printing ink contains a pigment and a fixing resin. The mass ratio of the pigment to the fixing resin is 1:1 to 1:5, and the ink has a viscosity of 3 mPas to 10 mPas at 23° C. The ink is ejected onto a transfer paper base by an ink-jet recording device when transfer paper is prepared. The ink is then transferred from the transfer paper to cloth as a result of the transfer paper, with the cloth laid over it, being heated.

First claim

What is claimed is:

1. A transfer-printing ink comprising:
a pigment; and
a fixing resin
wherein
a mass ratio of the pigment to the fixing resin is 1:1 to 1:5,
the ink has a viscosity of 3 mPas to 10 mPas at 23° C., and
the ink is ejected onto a transfer paper base by an ink-jet recording device when transfer paper is prepared, the ink then being transferred from the transfer paper to cloth as a result of the transfer paper, with the cloth laid thereover, being heated,
the fixing resin is anionic, and
the ink further comprises a volatile amine for neutralizing the fixing resin.

2. The transfer-printing ink according to claim 1 , wherein
the fixing resin is a water-dispersible resin and is present as a coating material around particles of the pigment.

3. The transfer-printing ink according to claim 1 , wherein
the fixing resin is a water-dispersible resin and forms an emulsion as latex particles.

4. The transfer-printing ink according to claim 2 , wherein
the water-dispersible resin is one, or two or more, selected from the group consisting of styrene-acrylic resin, silicone resin, polyester resin, polyurethane resin, a copolymer of styrene-acrylic resin with polyester resin, and a copolymer of styrene-acrylic resin with urethane resin.

5. The transfer-printing ink according to claim 1 , wherein
a boiling point of the volatile amine is 50° C. or higher but 250° C. or lower at ordinary pressure.

6. The transfer-printing ink according to claim 5 , wherein
the volatile amine is one, or two or more, selected from the group consisting of triethylamine, 2-dimethylaminoethanol, 2-di-n-butylaminoethanol; methyldiethanolamine, 2-amino-2-methyl-1-propanol, diethanolamine; triethanolamine, and 2-methylaminoethanol.

7. The transfer-printing ink according to claim 1 , wherein
a cross-linking temperature of the fixing resin is 100° C. or higher but 200° C. or lower.

8. A transfer-printing apparatus comprising:
an ink-jet recording unit which forms on a transfer paper base an image using transfer-printing ink containing a pigment, an anionic fixing resin, and a volatile amine for neutralizing the fixing resin; thereby to obtain transfer paper;
a drying unit which dries; at a temperature lower than a cross-linking temperature of the fixing resin; the transfer paper having the image formed thereon by the ink-jet recording unit;
a transferring unit which transfers the image formed on the transfer paper to cloth by pressing, while heating at a temperature higher than the cross-linking temperature of the fixing resin, the transfer paper dried by the drying unit with the cloth laid thereover; and
a releasing unit which releases the transfer paper base from a composite of the transfer paper and the cloth laid together that has passed through the transferring unit.

Assignees

• Kyocera Document Solutions Inc

Inventors

• Ozawa Yoshio

Classifications

• C09D11/38 Primary

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• B41F16/02

  for textile material · CPC title

• D06P5/30

  Ink jet printing · CPC title

• D06P1/5292

  containing Si-atoms · CPC title

• D06P1/5221

  Polymers of unsaturated hydrocarbons, e.g. polystyrene polyalkylene · CPC title