IP Library › Granted Patent US 9,340,692
Granted Patent B2
US 9,340,692 · App. 14/643,639 · Granted May 17, 2016

Ink, inkjet recording method, and recorded matter

Inventors: Tomohiro Nakagawa (Kanagawa, JP); Naohiro Toda (Kanagawa, JP); Hidefumi Nagashima (Kanagawa, JP); Juichi Furukawa (Kanagawa, JP); Hikaru Kobayashi (Kanagawa, JP)
Assignee: RICOH COMPANY, LTD.
C09D11/36C09D11/10C09D11/102C09D11/30C09D11/40
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Quick Facts
Patent No.
US 9,340,692
App. No.
14/643,639
Granted
May 17, 2016
Kind
B2
Abstract

An ink contains water, a hydrosoluble organic solvent, a colorant, a resin A; and a resin B, wherein the content of the resin B is from 0.5% by weight to less than 10% by weight to the content of the resin A and the resin B has a minimum film-forming temperature at least 30° C. lower than that of the resin A.

Claims (18)

1. An ink comprising:

water;

a hydrosoluble organic solvent;

a colorant;

a resin A; and

a resin B,

wherein a content of the resin B is from 0.5% by weight to less than 10% by weight to a content of the resin A and the resin B has a minimum film-forming temperature at least 30° C. lower than that of the resin A.

2. The ink according to claim 1 , wherein the resin A has a minimum film-forming temperature of from 40° C. to lower than 200° C.

3. The ink according to claim 1 , wherein one of the resin A and the resin B is a urethane resin.

4. The ink according to claim 3 , wherein the urethane resin is a polycarbonate-based urethane resin.

5. The ink according to claim 4 , wherein the polycarbonate-based urethane resin has a structure derived from at least one kind of an alicyclic diisocyanate.

6. The ink according to claim 1 , wherein the hydrosoluble organic solvent comprises at least one compound selected from the group consisting of 1,2-propane diol, 1,3-propane diol, 1,2-butane diol, 1,3-butane diol, and 2,3-butane diol.

7. An inkjet recording method comprising:

ejecting the ink of claim 1 by applying heat energy or mechanical energy to the ink to print an image on a recording medium.

8. The inkjet recording method according to claim 7 , further comprising heating the recording medium after the image is printed.

9. Recorded matter comprising:

a recording medium; and

an image formed on the recording medium using the ink of claim 1 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 10, 2015
From: NAKAGAWA, TOMOHIRO; TODA, NAOHIRO; NAGASHIMA, HIDEFUMI; FURUKAWA, JUICHI; KOBAYASHI, HIKARU
To: RICOH COMPANY, LTD.
Reel/Frame 035131/0446 →
Priority Claims (1)
JP 2014-050063 · Mar 13, 2014 · national
Continuity (1)
Related Publication 20150259553A1 · Sep 17, 2015