Image forming method

Patent metadata

Field	Value
Publication number	US-2023183506-A1
Application number	US-202218057897-A
Country	US
Kind code	A1
Filing date	Nov 22, 2022
Priority date	Dec 15, 2021
Publication date	Jun 15, 2023
Grant date	—

Abstract

An image forming method includes: preparing a fabric to which an aggregating agent is attached; applying an aqueous ink containing a pigment, a first resin, and water onto the fabric to which the aggregating agent is attached; and applying a coating liquid containing a second resin and water onto the applied aqueous ink, wherein the second resin is aggregated by the aggregating agent, a content of the second resin in the coating liquid is smaller than a content of the first resin in the aqueous ink, and an amount of the coating liquid attached to the fabric is larger than an amount of the aqueous ink attached to the fabric.

First claim

What is claimed is:

1 . An image forming method comprising:
preparing a fabric to which an aggregating agent is attached; applying an aqueous ink containing a pigment, a first resin, and water onto the fabric to which the aggregating agent is attached; and applying a coating liquid containing a second resin and water onto the applied aqueous ink, wherein the second resin is aggregated by the aggregating agent, a content of the second resin in the coating liquid is smaller than a content of the first resin in the aqueous ink, and an amount of the coating liquid attached to the fabric is larger than an amount of the aqueous ink attached to the fabric.

2 . The image forming method according to claim 1 , wherein
the aggregating agent contains one or more selected from the group consisting of a polyvalent metal salt, an organic acid, and a cationic polymer, and the second resin contains a water-dispersible resin having an anionic group.

3 . The image forming method according to claim 1 , wherein
the content of the second resin in the coating liquid is 0.5 times or less the content of the first resin in the aqueous ink.

4 . The image forming method according to claim 1 , wherein
the content of the second resin in the coating liquid is 1 to 15% by mass with respect to the coating liquid.

5 . The image forming method according to claim 1 , wherein
the content of the first resin in the aqueous ink is 10 to 35% by mass with respect to the aqueous ink.

6 . The image forming method according to claim 1 , wherein
the amount of the coating liquid attached to the fabric is 1.4 times or more the amount of the aqueous ink attached to the fabric.

7 . The image forming method according to claim 1 , wherein
the amount of the coating liquid attached to the fabric is 10 to 100 g/m 2 .

8 . The image forming method according to claim 1 , wherein
an amount of the first resin attached to the fabric is 2.5 g/m 2 or more.

9 . The image forming method according to claim 1 , wherein
a glass transition temperature Tg of the first resin is lower than a glass transition temperature Tg of the second resin.

10 . The image forming method according to claim 1 , wherein
the first resin contains a (meth)acrylic resin having a glass transition temperature Tg of −25° C. or lower.

11 . The image forming method according to claim 1 , wherein
the second resin contains a urethane-based resin.

12 . The image forming method according to claim 1 , wherein
surface tension of the coating liquid at 25° C. is smaller than surface tension of the aqueous ink at 25° C.

13 . The image forming method according to claim 1 , wherein
the amount of the coating liquid attached to the fabric is adjusted according to an amount of the aggregating agent attached to the fabric.

14 . The image forming method according to claim 1 , wherein
the aqueous ink and the coating liquid are applied by an inkjet method, and an amount of droplets of the coating liquid is larger than an amount of droplets of the aqueous ink.

Assignees

• Konica Minolta Inc

Inventors

• Suzuki Keishi

Classifications

• D06P1/5285

  Polyurethanes; Polyurea; Polyguanides · CPC title

• C09D11/38 Primary

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

• C09D11/40

  Ink-sets specially adapted for multi-colour inkjet printing · CPC title

• C09D11/322

  Pigment inks · CPC title

• D06P1/5242

  Polymers of unsaturated N-containing compounds · CPC title