IP Library › Granted Patent US 12,480,010
Granted Patent B2
US 12,480,010 · App. 17/494,863 · Granted Nov 25, 2025

Aqueous inkjet ink, aqueous inkjet ink set, and inkjet recording method

Inventors: Kenji Shinjo (Kanagawa, JP); Yohei Kohashi (Kanagawa, JP); Tatsuaki Orihara (Tokyo, JP); Takeshi Okada (Kanagawa, JP)
Assignee: Canon Kabushiki Kaisha
C09D11/101B41J11/0021C08F120/56C08K5/07C08K5/25C09D11/107C09D11/324C09D11/38C09D11/54
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Quick Facts
Patent No.
US 12,480,010
App. No.
17/494,863
Granted
Nov 25, 2025
Kind
B2
Abstract

An aqueous inkjet ink of the present disclosure is an active energy ray curable aqueous inkjet ink including a water-soluble monomer having a polymerizable group and a hydrazide compound. The water-soluble monomer is a curable substance having a ketone structure.

Claims (21)

1 . An active energy ray curable aqueous inkjet ink comprising:

a water-soluble monomer having a polymerizable group; and

a hydrazide compound, wherein

the water-soluble monomer is a curable substance having a ketone structure,

the curable substance is an acrylamide-based compound, and

the hydrazide compound is adipic acid dihydrazide or carbohydrazide.

2 . The aqueous inkjet ink according to claim 1 , wherein

the acrylamide-based compound is at least one selected from the group consisting of diacetone acrylamide and diacetone methacrylamide.

3 . An aqueous inkjet ink set, comprising:

a combination of an active energy ray curable first aqueous inkjet ink containing a water-soluble monomer having a polymerizable group and a second aqueous inkjet ink containing a hydrazide compound, wherein

the water-soluble monomer is a curable substance having a ketone structure,

the curable substance is an acrylamide-based compound, and

the hydrazide compound is adipic acid dihydrazide or carbohydrazide.

4 . The aqueous inkjet ink set according to claim 3 , wherein

the acrylamide-based compound is at least one selected from the group consisting of diacetone acrylamide and diacetone methacrylamide.

5 . The aqueous inkjet ink according to claim 1 , wherein the hydrazide compound is adipic acid dihydrazide.

6 . The aqueous inkjet ink according to claim 1 , wherein the molecular weight of the water-soluble monomer is 1,000 or less.

7 . The aqueous inkjet ink according to claim 1 , comprising a polymerization initiator, wherein the content of the polymerization initiator in the ink is 0.01% by mass or more to 5% by mass or less relative to the total mass of the ink.

8 . The aqueous inkjet ink set according to claim 3 , wherein the hydrazide compound is adipic acid dihydrazide.

9 . The aqueous inkjet ink set according to claim 3 , wherein the molecular weight of the water-soluble monomer is 1,000 or less.

10 . The aqueous inkjet ink set according to claim 3 , wherein at least one selected from the group of the first aqueous inkjet ink and the second aqueous inkjet ink contains a polymerization initiator, and the content of the polymerization initiator in the ink is 0.01% by mass or more to 5% by mass or less relative to the total mass of the ink.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 7, 2021
From: SHINJO, KENJI; KOHASHI, YOHEI; ORIHARA, TATSUAKI; OKADA, TAKESHI
To: CANON KABUSHIKI KAISHA
Reel/Frame 058731/0700 →
Priority Claims (2)
JP 2020-170534 · Oct 8, 2020 · national
JP 2021-158231 · Sep 28, 2021 · national
Continuity (1)
Related Publication 20220112385A1 · Apr 14, 2022
References Cited (81)
US 4313124A · Hara · 1982 [cited by applicant]
US 4345262A · Shirato et al. · 1982 [cited by applicant]
US 4459600A · Sato et al. · 1984 [cited by applicant]
US 4463359A · Ayata et al. · 1984 [cited by applicant]
US 4558333A · Sugitani et al. · 1985 [cited by applicant]
US 4723129A · Endo et al. · 1988 [cited by applicant]
US 4740796A · Endo et al. · 1988 [cited by applicant]
US 5658376A · Noguchi et al. · 1997 [cited by applicant]
US 5837045A · Johnson et al. · 1998 [cited by applicant]
US 5851280A · Belmont et al. · 1998 [cited by applicant]
US 6114020A · Misuda et al. · 2000 [cited by applicant]
US 6354698B1 · Tachihara et al. · 2002 [cited by applicant]
US 6391440B1 · Yoshino et al. · 2002 [cited by applicant]
US 6612688B2 · Tachihara et al. · 2003 [cited by applicant]
US 6670000B1 · Misuda et al. · 2003 [cited by applicant]
US 6730375B2 · Moriya et al. · 2004 [cited by applicant]
US 6783229B1 · Inamoto et al. · 2004 [cited by applicant]
US 6811839B2 · Hiro et al. · 2004 [cited by applicant]
US 6966944B2 · Shimomura et al. · 2005 [cited by applicant]
US 7208032B2 · Hakamada et al. · 2007 [cited by applicant]
US 7297194B2 · Shinjo et al. · 2007 [cited by applicant]
US 7517073B2 · Nito et al. · 2009 [cited by applicant]
US 7517074B2 · Hakamada et al. · 2009 [cited by applicant]
US 7601790B2 · Sato et al. · 2009 [cited by applicant]
US 8124791B2 · Shinjo et al. · 2012 [cited by applicant]
US 8158746B2 · Shinjo · 2012 [cited by applicant]
US 8408690B2 · Harada et al. · 2013 [cited by applicant]
US 8690306B2 · Amao et al. · 2014 [cited by applicant]
US 8905534B2 · Amao et al. · 2014 [cited by applicant]
US 8940373B1 · Shinjo et al. · 2015 [cited by applicant]
US 9051484B2 · Shinjo et al. · 2015 [cited by applicant]
US 9598589B2 · Naruse et al. · 2017 [cited by applicant]
US 10065412B2 · Shinjo et al. · 2018 [cited by applicant]
US 20020047877A1 · Tachihara et al. · 2002 [cited by applicant]
US 20050287476A1 · Ishikawa · 2005 [cited by examiner]
US 20070211126A1 · Bauer · 2007 [cited by examiner]
US 20110104453A1 · Shinjo et al. · 2011 [cited by applicant]
US 20120142847A1 · Yang · 2012 [cited by examiner]
US 20120249700A1 · Amao et al. · 2012 [cited by applicant]
US 20140077486A1 · Naruse et al. · 2014 [cited by applicant]
US 20140132685A1 · Amao et al. · 2014 [cited by applicant]
US 20150050426A1 · Ito · 2015 [cited by examiner]
US 20170137644A1 · Morita · 2017 [cited by examiner]
CN 110128875A · 2019 [cited by examiner]
CN 110684487A · 2020 [cited by examiner]
JP S59123670A · 1984 [cited by applicant]
JP H08143802A · 1996 [cited by applicant]
JP H08209048A · 1996 [cited by applicant]
JP H10140065A · 1998 [cited by applicant]
JP H11188870A · 1999 [cited by applicant]
JP 2962880B2 · 1999 [cited by applicant]
JP 3246949B2 · 2002 [cited by applicant]
JP 2012214561A · 2012 [cited by applicant]
JP 2013018846A · 2013 [cited by applicant]
JP 6015913B2 · 2016 [cited by applicant]
WO WO2018168870A1 · 2018 [cited by examiner]
WO WO2019065266A1 · 2019 [cited by examiner]
WO 2018168870 A1 machine translation (Year: 2018). [cited by examiner]
WO 2019065266 A1 machine translation (Year: 2019). [cited by examiner]
Gantrade, FAQ: Diacetone Acrylamide, Archived Sep. 24, 2020, p. 1-8 (Year: 2020). [cited by examiner]
CN110684487A machine translation (Year: 2020). [cited by examiner]
CN110128875A machine translation (Year: 2019). [cited by examiner]
JP 2962880 B2. [cited by examiner]
JP 3246949 B2. [cited by examiner]
JP 6015913 A, U.S. Pat. No. 9,598,589 B2. [cited by examiner]
JP H08-143802 A. [cited by examiner]
JP H08-209048 A, U.S. Pat. No. 9,598,589 B2. [cited by examiner]
JP H10-140065 A. [cited by examiner]
JP H11-188870 A, U.S. Pat. No. 6,354,698 B1. [cited by examiner]
JP S59-123670 A. [cited by examiner]
JP 2012-214561 A, U.S. Pat. No. 8,690,306 B2. [cited by examiner]
JP 2013-018846 A, U.S. Pat. No. 8,905,534 B2. [cited by examiner]
U.S. Pat. No. 5,837,045. [cited by examiner]
U.S. Pat. No. 5,851,280. [cited by examiner]
U.S. Pat. No. 4,723,129. [cited by examiner]
U.S. Pat. No. 4,740,796. [cited by examiner]
U.S. Pat. No. 4,463,359. [cited by examiner]
U.S. Pat. No. 4,345,262. [cited by examiner]
U.S. Pat. No. 4,313,124. [cited by examiner]
U.S. Pat. No. 4,558,333. [cited by examiner]
U.S. Pat. No. 4,459,600. [cited by examiner]