Active-energy-ray-curable composition, active-energy-ray-curable ink, composition stored container, two-dimensional or three-dimensional image forming method, two-dimensional or three-dimensional image forming apparatus, and processed product

Patent metadata

Field	Value
Publication number	US-10604666-B2
Application number	US-201615351974-A
Country	US
Kind code	B2
Filing date	Nov 15, 2016
Priority date	Nov 16, 2015
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

An active-energy-ray-curable composition including: a magenta pigment; a polymerizable compound; and a pigment adsorption component, an amount of the pigment adsorption component (A 0 ) adsorbed onto 100 mg of the magenta pigment being from 10 mg through 60 mg.

First claim

What is claimed is:

1. An active-energy-ray-curable composition, comprising:
a magenta pigment;
a polymerizable compound; and
a pigment adsorption component,
wherein:
an amount of the pigment adsorption component (A 0 ) adsorbed onto 100 mg of the magenta pigment is from 10 mg through 60 mg;
the magenta pigment is a surface-treated magenta pigment that was surface treated with an acid; and
a percentage of change in the amount of the pigment adsorption component (ΔA) as determined by Formula (1) below is within ±20%:
Δ A (%)=( A−A 0 )/ A 0 ×100  (1), where:

A is an amount of the pigment adsorption component adsorbed onto the 100 mg of the magenta pigment after the active-energy-ray-curable composition is left to stand at 70° C. for 14 days.

2. The active-energy-ray-curable composition according to claim 1 , wherein the amount of the pigment adsorption component (A 0 ) absorbed onto the 100 mg of the magenta pigment is from 15 mg through 50 mg.

3. The active-energy-ray-curable composition according to claim 1 , wherein the percentage of change in the amount of the pigment adsorption component (ΔA) as determined by the Formula (1) is within ±18%.

4. The active-energy-ray-curable composition according to claim 1 , wherein:
a 50% cumulative volume particle diameter of the active-energy-ray-curable composition is 80 nm or more but 180 nm or less; and
a distribution width of a particle size distribution of the active-energy-ray-curable composition as determined by Formula (2) below is 90 nm or less:
Distribution width of particle size distribution=(84% cumulative volume particle diameter−16% cumulative volume particle diameter)/2  (2).

5. The active-energy-ray-curable composition according to claim 1 , wherein the magenta pigment includes a quinacridone pigment.

6. The active-energy-ray-curable composition according to claim 1 , wherein:
the pigment adsorption component is a dispersant polymer including an amino group; and
the dispersant polymer has an amine value of 10 mg KOH/g or more but 30 mg KOH/g or less.

7. An active-energy-ray-curable ink, comprising an active-energy-ray-curable composition, wherein:
the active-energy-ray-curable composition includes:
a magenta pigment,
a polymerizable compound, and
a pigment adsorption component;

an amount of the pigment adsorption component (A 0 ) adsorbed onto 100 mg of the magenta pigment is from 10 mg through 60 mg; and
a percentage of change in the amount of the pigment adsorption component (ΔA) as determined by Formula (1) below is within ±20%:
Δ A (%)=( A−A 0 )/ A 0 ×100  (1), where:

A is an amount of the pigment adsorption component adsorbed onto the 100 mg of the magenta pigment after the active-energy-ray-curable composition is left to stand at 70° C. for 14 days.

8. An inkjet discharging device, comprising the active-energy-ray-curable ink according to claim 7 .

9. A composition stored container, comprising:
the active-energy-ray-curable composition according to claim 1 ; and
a container containing the active-energy-ray-curable composition.

10. A two-dimensional or three-dimensional image forming apparatus, comprising:
a storing part including the active-energy-ray-curable ink according to claim 7 ; and
an irradiator configured to irradiate the active-energy-ray-curable ink with active energy rays.

11. The two-dimensional or three-dimensional image forming apparatus according to claim 10 , further comprising:
an ejecting unit configured to eject the active-energy-ray-curable ink by an inkjet recording system.

12. A two-dimensional or three-dimensional image forming method, comprising:
irradiating the active-energy-ray-curable composition according to claim 1 with active energy rays.

13. The two-dimensional or three-dimensional image forming method according to claim 12 , further comprising:
ejecting the active-energy-ray-curable composition by an inkjet recording system.

14. A two-dimensional or three-dimensional image, wherein the two-dimensional or three-dimensional image is obtained by irradiating the active-energy-ray-curable composition according to claim 1 with active energy rays, and curing the active-energy-ray-curable composition.

15. A structure, comprising:
a substrate; and
the two-dimensional or three-dimensional image according to claim 14 on the substrate.

16. A processed product, wherein the processed product is obtained by subjecting the two-dimensional or three-dimensional image according to claim 14 to a drawing process.

17. A processed product, wherein the processed product is obtained by subjecting the structure according to claim 15 to a drawing process.

18. A curable composition, comprising:
a magenta pigment;
a polymerizable compound; and
a pigment adsorption component,
wherein:
an amount of the pigment adsorption component (A 0 ) adsorbed onto 100 mg of the magenta pigment is from 10 mg through 60 mg;
the magenta pigment is a surface-treated magenta pigment that was surface treated with an acid; and
a percentage of change in the amount of the pigment adsorption component (ΔA) as determined by Formula (1) below is within ±20%:
Δ A (%)=( A−A 0 )/ A 0 ×100  (1), where:

A is an amount of the pigment adsorption component adsorbed onto the 100 mg of the magenta pigment after the active-energy-ray-curable composition is left to stand at 70° C. for 14 days.

19. The curable composition according to claim 18 , wherein the curable composition can be cured without irradiating the curable composition with active energy rays.

20. The active-energy-ray-curable ink according to claim 7 , wherein a static surface tension of the active-energy-ray-curable ink at 25° C. is 20 nN/m or more and 40 nN/m or less.

Assignees

• Hirade Tomohiro
• Asami Tsuyoshi
• Ricoh Co Ltd

Inventors

• Hirade Tomohiro
• Asami Tsuyoshi

Classifications

• C09D133/14

  of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen · CPC title

• C09D11/322

  Pigment inks · CPC title

• C09D11/326

  characterised by the pigment dispersant · CPC title

• C09D11/101 Primary

  Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing · CPC title

• C08L2312/06

  by radiation · CPC title