RADIATION CURABLE INK COMPOSITION AND RECORDING METHOD

• US 20200131381A1
• Filed: 10/30/2019
• Published: 04/30/2020
• Est. Priority Date: 10/31/2018
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: KOIKE, Naoki, SAITO, Toru, YODA, Toshiyuki
• Application Number:
  US16/668,120
• Publication Number:
  US 20200131381A1
• Time in Patent Office: Days
• CPC Class Codes: B41M 5/0023 Digital printing methods characterised by the inks used inks per se C09D11/00
• CPC Class Codes: B41M 7/0081 using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
• 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 11/107 from unsaturated acids or derivatives thereof
• CPC Class Codes: C09D 11/30 Inkjet printing inks
• CPC Class Codes: C09D 11/38 characterised by non-macromolecular additives other than solvents, pigments or dyes

Abstract

A radiation curable ink composition includes 5 to 30 mass % of a monofunctional urethane (meth)acrylate and 5 to 30 mass % of a nitrogen-containing monofunctional monomer having a cyclic skeleton containing a nitrogen atom.

Claims

1. A radiation curable ink composition comprising:

5 to 30 mass % of a monofunctional urethane (meth) acrylate, and

5 to 30 mass % of a nitrogen-containing monofunctional monomer having a cyclic skeleton containing a nitrogen atom.

2. The radiation curable ink composition according to claim 1, comprising:

a vinyl ether group-containing (meth)acrylate represented by Formula 1;

CH₂═

CR¹—

COOR²—

O—

CH═

CH—

R³

(where R¹ is a hydrogen atom or a methyl group, R² is a divalent organic residue having 2 to 20 carbon atoms, and R³ is a hydrogen atom or a monovalent organic residue having 1 to 11 carbon atoms).

3. The radiation curable ink composition according to claim 2, comprising the vinyl ether group-containing (meth)acrylate in an amount of 10 to 50 mass %.

4. The radiation curable ink composition according to claim 1, wherein

the nitrogen-containing monofunctional monomer includes an N-vinyl monomer.

5. The radiation curable ink composition according claim 1, wherein

the nitrogen-containing monofunctional monomer includes an amide acrylate.

6. The radiation curable ink composition according to claim 1, comprising:

an acylphosphine oxide-based polymerization initiator.

7. The radiation curable ink composition according to claim 1, comprising:

a hindered amine-based polymerization inhibitor.

8. The radiation curable ink composition according to claim 1, comprising:

a color material.

9. A recording method comprising:

discharging the radiation curable ink composition according to claim 1 by an ink jet system to adhere the ink composition to a non-absorbing recording medium; and

irradiating the adhered radiation curable ink composition with light.