Ink composition, ink set and image forming method

• US 8,461,228 B2
• Filed: 03/09/2011
• Issued: 06/11/2013
• Est. Priority Date: 03/17/2010
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Yasuda, Koji
• Primary Examiner(s): NILAND, PATRICK DENNIS
• Application Number:
  US13/043,498
• Publication Number:
  US 20110229641A1
• Time in Patent Office: 825 Days
• Field of Search: 523/160, 523/161, 522/167, 522/173, 522/174, 522/175, 522/186, 526/258, 526/298, 526/303.1, 526/306, 526/307, 347/1, 347/85, 347/95, 347/100, 101/491, 427/256, 427/258, 427/511
• US Class Current: 523/160
• CPC Class Codes: C09D 11/101 Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
• CPC Class Codes: C09D 11/326 characterised by the pigment dispersant

Abstract

The invention provides an ink composition including a polymerizable compound represented by following Formula (1), a polymerization initiator and water:
XA)_n  Formula (1)

• • wherein, in Formula (1), X represents a divalent or trivalent nitrogen-containing linking group represented by any one of following Formulae (X1) to (X3), A represents a polymerizable functional group having an amide group, and n represents 2 or 3:

• • wherein, in Formulae (X1) to (X3), Z represents an alkylene group having 2 or 3 carbon atoms, or a divalent linking group including an alkylene group having 2 or 3 carbon atoms and an oxygen atom; and R¹ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.

Claims

1. An ink composition comprising a polymerizable compound represented by following Formula (1), a polymerization initiator and water:

XA)_n 

 

Formula (1)

wherein, in Formula (1), X represents a divalent or trivalent nitrogen-containing linking group represented by any one of following Formulae (X1) to (X3), A represents a polymerizable functional group having an amino group, and n represents 2 or 3;

2. The ink composition according to claim 1, wherein the polymerizable functional group represented by A is any one of following Formulae (A1) to (A4):

3. The ink composition according to claim 2, wherein the polymerizable functional group represented by A is represented by Formula (A1).

4. The ink composition according to claim 1, further comprising a pigment.

5. The ink composition according to claim 1, wherein the polymerization initiator is a photopolymerization initiator.

6. An ink set comprising the ink composition according to claim 1 and a treatment liquid capable of forming an aggregation by contacting the aqueous ink composition.

7. The ink set according to claim 6, wherein the treatment liquid comprises at least one of an acidic compound, a polyvalent metal salt or a cationic polymer.

8. An image forming method comprising:

applying the treatment liquid included in the ink set according to claim 6 onto a recording medium; and

applying the ink composition included in the ink set onto the recording medium to form an image.

9. The image forming method according to claim 8, wherein the recording medium is coated paper.

10. The image forming method according to claim 8, wherein the ink composition is applied onto the recording medium to which the treatment liquid has been applied.

11. The image forming method according to claim 8, wherein the ink composition is applied by an inkjet method.