Ink jet recording method and ink jet recording apparatus

Patent metadata

Field	Value
Publication number	US-10844237-B2
Application number	US-201916681669-A
Country	US
Kind code	B2
Filing date	Nov 12, 2019
Priority date	May 17, 2017
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

An ink jet recording method including the steps of a first recording step for applying a first ink to a recording medium and a second recording step for applying a second ink to the recording medium so as to overlap at least a region provided with the first ink, wherein the first ink is an aqueous ink containing silver particles, the second ink is an aqueous ink containing a dye, a time difference between applications of the first ink and the second ink to the recording medium is 1 sec or more to 7,200 sec or less, and the dye is a predetermined dye.

First claim

The invention claimed is:

1. An ink jet recording method comprising the steps of:
a first step for applying a first ink to a recording medium; and
a second step for applying a second ink to the recording medium so as to overlap at least a region provided with the first ink,
wherein the first ink is an aqueous ink comprising silver particles,
the second ink is an aqueous ink comprising a dye,
a time difference between applications of the first ink and the second ink to the recording medium is 1 sec or more to 7,200 sec or less, and
the intermolecular distance d-value of the dye measured by a small-angle X-ray scattering method is 5.9 nm or more, and the ratio of the peak area to the peak area of C.I. Acid Red 249 is 1.1 times or more.

2. The ink jet recording method according to claim 1 , wherein the d-value of the dye is 6.1 nm or more.

3. The ink jet recording method according to claim 1 , wherein the ratio of the peak area of the dye to the peak area of C.I. Acid Red 249 is 2.4 times or more.

4. The ink jet recording method according to claim 1 , wherein the ratio of the peak area of the dye to the peak area of C.I. Acid Red 249 is 3.4 times or more.

5. The ink jet recording method according to claim 1 , wherein the dye is at least one selected from a group consisting of C.I. Direct Blue 199, C.I. Direct Yellow 132, C.I. Acid Red 289, a compound represented by general formula (1) below, a compound represented by general formula (2) below, a compound represented by general formula (3) below, a compound represented by general formula (4) below, a compound represented by general formula (5) below, and a compound represented by general formula (6) below,

(in general formula (1), each of rings A, B, C, and D indicated by broken lines independently represents an aromatic ring or a nitrogen-containing aromatic ring, R represents an amino group or an alkoxy group having a carbon number of 1 or more to 4 or less, each M independently represents a hydrogen atom, an alkali metal, ammonium, or organic ammonium, 1 represents 0 or more to 2 or less, m represents 1 or more to 3 or less, n represents 1 or more to 3 or less, and the total of l, m, and n is 2 or 3)

(in general formula (2), each R 1 independently represents an alkyl group having a carbon number of 1 or more to 8 or less, the alkyl group may have a substituent that is an anionic group, a sulfonamide group, a hydroxy group, or a group in which at least two of these are combined, and p represents 3 or 4)

(in general formula (3), each of R 2 , R 3 , R 4 , and R 5 independently represents an alkyl group having a carbon number of 1 or more to 4 or less, and each M independently represents a hydrogen atom, an alkali metal, ammonium, or organic ammonium)

(in general formula (4), each of R 6 and R 7 independently represents a hydrogen atom, an alkyl group, an acylamino group, an alkoxy group, a sulfonic acid group, a carboxylic acid group, or a ureido group, each M independently represents a hydrogen atom, an alkali metal, ammonium, or organic ammonium, and each of m and n independently represents 1 or 2)

(in general formula (5), R 8 represents an alkyl group having a carbon number of 1 or more to 4 or less; an alkyl group having a carbon number of 1 or more to 4 or less and having a carboxylic acid group as a substituent; a phenyl group; a phenyl group having a sulfonic acid group as a substituent; or a carboxylic acid group, R 9 represents a cyano group; a carbamoyl group; or a carboxylic acid group, each of R 10 and R 11 independently represents a hydrogen atom; an alkyl group having a carbon number of 1 or more to 4 or less; a halogen atom; an alkoxy group having a carbon number of 1 or more to 4 or less; or a sulfonic acid group, each of R 12 and R 14 independently represents an alkylthio group having a carbon number of 1 or more to 4 or less; or an alkylthio group having a carbon number of 1 or more to 4 or less and having at least one substituent selected from a group consisting of a hydroxy group, a sulfonic acid group, and a carboxylic acid group, each of R 13 and R 15 independently represents an alkylcarbonylamino group having a carbon number of 1 or more to 4 or less, each of R 16 and R 17 independently represents a hydrogen atom; a carboxylic acid group; a sulfonic acid group; an acetylamino group; a halogen atom; an alkyl group having a carbon number of 1 or more to 4 or less; an alkoxy group having a carbon number of 1 to 4; or an alkoxy group having a carbon number of 1 or more to 4 or less and having at least one substituent selected from a group consisting of a hydroxy group, an alkoxy group having a carbon number of 1 or more to 4 or less, a sulfonic acid group, and a carboxylic acid group, each of R 18 , R 19 , and R 20 independently represents a hydrogen atom; a carboxylic acid group; a sulfonic acid group, a hydroxy group; an acetylamino group; a halogen atom; a cyano group; a nitro group; a sulfamoyl group; an alkyl group having a carbon number of 1 or more to 4 or less; an alkoxy group having a carbon number of 1 or more to 4 or less; an alkoxy group having a carbon number of 1 or more to 4 or less and having at least one substituent selected from a group consisting of a hydroxy group, an alkoxy group having a carbon number of 1 or more to 4 or less, a sulfonic acid group, and a carboxylic acid group; an alkylsulfonyl group having a carbon number of 1 to 4; or an alkylsulfonyl group having a carbon number of 1 or more to 4 or less and having at least one substituent selected from a group consisting of a hydroxy group, a sulfonic acid group, and a carboxylic acid group)

(in general formula (6), each of R 21 and R 22 independently represents an alkyl group having a carbon number of 1 or more to 4 or less or an aryl group and those may have an anionic group as a substituent, R 23 represents an aryl group that may have a cyano group or an anionic group as a substituent, and each M independently represents a hydrogen atom, an alkali metal, ammonium, or organic ammonium).

6. The ink jet recording method according to claim 1 , wherein the first ink comprises a polyhydric alcohol of trivalence or more to hexavalence or less.

7. The ink jet recording method according to claim 6 , wherein the polyhydric alcohol is a pentahydric or hexahydric sugar alcohol.

8. The ink jet recording method according to claim 1 , wherein the ratio (times) per unit area of the recording medium of the amount of the dye applied (g/m 2 ) to the amount of the silver particles applied (g/m 2 ) is 0.2 times or more to 0.7 times or less.

9. An ink jet recording apparatus comprising a device to apply a second ink after a first ink is applied,
wherein the first ink is an aqueous ink comprising silver particles,
the second ink is an aqueous ink comprising a dye,
a time difference between applications of the first ink and the second ink to the recording medium is 1 sec or more to 7,200 sec or less, and
the intermolecular distance d-value of the dye measured by a small-angle X-ray scattering method is 5.9 nm or more, and, in addition, the ra

Assignees

• Canon Kk

Inventors

• Taira Yoko
• Ikegami Masayuki
• Shimizu Yuhei
• Kuriyama Akira

Classifications

• C09D11/322

  Pigment inks · CPC title

• C09D11/38

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

• C09D11/36

  based on non-aqueous solvents · CPC title

• C09B56/16

  Methine- or polymethine-azo dyes · CPC title

• C09D11/40 Primary

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