# US 8,783,844 B2 · Ink jet recording method, ink jet recording apparatus, and recording material

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- Number: US 8,783,844 B2
- Document ID: US8783844B2
- Status: Granted
- Kind: B2
- Application number: 13/744,545
- Filed: 2013-01-18
- Published: 2013-08-08
- Granted: 2014-07-22
- Earliest claimed: 2012-01-19
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Hitoshi Ohta
- Web page: https://patentgrep.com/patent/US8783844B2

## CPC

- B41J 2/01: Ink jet
- B41J 2/2107: {characterised by the ink properties (supplying ink in a solid state B41J2/17593)}
- B41M 5/0017: {Application of ink-fixing material, e.g. mordant, precipitating agent, on the substrate prior to printing, e.g. by ink-jet printing, coating or spraying}
- B41M 5/0023: {Digital printing methods characterised by the inks used (inks per se C09D11/00)}
- B41M 5/0047: {by ink-jet printing}
- B41M 5/0064: {on plastics, horn, rubber, or other organic polymers}
- B41M 7/0027: {using protective coatings or layers by lamination or by fusion of the coatings or layers}
- Y10T 428/24884: Translucent layer comprises natural oil, wax, resin, gum, glue, gelatin
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An ink jet recording method includes recording an image on a target recording face including polyolefin by ejecting an ink composition containing water, a coloring material, and resin from nozzles of an ink jet recording head, in which two or more of the following are satisfied. Condition (A): Prior to the recording, there is included performing a hydrophilic treatment on the target recording face, Condition (B): The ink composition includes glycol ethers of which the HLB value calculated by the Davis method is 4.2 or more to 9.0 or less, and Condition (C): After the recording, there is included coating the image with a coating liquid composition containing wax.

## Claims

### Claim 1

An ink jet recording method comprising:
recording an image on a target recording face including polyolefin by ejecting an ink composition containing water, a coloring agent, and resin from nozzles of an ink jet recording head,
wherein the following condition (A) is satisfied and one or both of condition (B) and condition (C) are satisfied,
Condition (A): Prior to the recording, there is included performing a hydrophilic treatment on the target recording face such that the target recording face has a hydrophilic polar group,
Condition (B): The ink composition includes glycol ethers of which an HLB value calculated by the Davis method is 4.2 or more to 9.0 or less,
Condition (C): After the recording, there is included coating the image with a coating liquid composition containing wax.

### Claim 2 (depends on 1)

The ink jet recording method according to claim 1, wherein:
the Condition (C) is satisfied, and the method further comprises performing a second hydrophilic treatment on the image before the coating in the condition (C).

### Claim 3 (depends on 1)

The ink jet recording method according to claim 1, wherein the resin is at least one type or more selected from
(a) a resin including a (meth)acrylic acid based copolymer,
(b) a resin including a copolymer of an olefin based monomer and a monomer having an aprotic polar group,
(c) a resin including a copolymer of an olefin based monomer and a monomer containing halogen, and
(d) a resin including a polycondensate of polycarboxylic acids and polyhydric alcohols.

### Claim 4 (depends on 1)

The ink jet recording method according to claim 1, wherein the wax in the condition (C) is a paraffin wax or a polyolefin wax.

### Claim 5 (depends on 1)

The ink jet recording method according to claim 1, wherein the coating liquid composition in the condition (C) contains glycol ethers of which the HLB value calculated by the Davis method is 4.2 or more to 9.0 or less.

### Claim 6 (depends on 1)

The ink jet recording method according to claim 1, wherein an alkyl group of the glycol ethers in the condition (B) has a branched structure.

### Claim 7 (depends on 1)

The ink jet recording method according to claim 1, wherein the hydrophilic polar group is a carboxyl group or a hydroxyl group.

### Claim 8 (depends on 1)

The ink jet recording method according to claim 1, wherein the hydrophilic treatment is performed using a corona discharge treatment apparatus or a plasma discharge treatment apparatus.