Actinic ray curable ink-jet ink and printed matter

• US 20050020717A1
• Filed: 07/09/2004
• Published: 01/27/2005
• Est. Priority Date: 07/22/2003
• Status: Active Grant

• Current Assignee: Konica Minolta Medical & Graphic Incorporated (Konica Minolta Inc.)
• Original Assignee: Konica Minolta Medical & Graphic Incorporated (Konica Minolta Inc.)
• Inventors: Sasa, Nobumasa
• Granted Patent: US 7,119,130 B2
• Time in Patent Office: Days
• US Class Current: 522/170
• 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: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31511 Of epoxy ether

Abstract

Disclosed is an actinic ray curable ink-jet ink comprising a an epoxy compound having at least two oxirane rings and a linkage chain linking the two oxirane rings, wherein the linkage chain has a branched structure.

Claims

1. An actinic ray curable ink-jet ink comprising an epoxy compound having at least two oxirane rings and a linkage chain linking the two oxirane rings, wherein the linkage chain has a branched structure.

2. The actinic ray curable ink-jet ink of claim 1, wherein the linkage chain has at least two ester groups.

3. The actinic ray curable ink-jet ink of claim 1, wherein the epoxy compound is an alicyclic epoxy compound represented by the following formula (VI) or (VII),

4. The actinic ray curable ink-jet ink of claim 1, wherein the epoxy compound has a molecular weight of from 170 to 1,000.

5. The actinic ray curable ink-jet ink of claim 1, further comprising an oxetane ring-containing compound or a vinyl ether compound.

6. The actinic ray curable ink-jet ink of claim 1, further comprising a cationic photopolymerization initiator.

7. The actinic ray curable ink-jet ink of claim 1, further comprising pigment.

8. The actinic ray curable ink-jet ink of claim 7, further comprising a pigment dispersant.

9. The actinic ray curable ink-jet ink of claim 7, wherein the pigment has an average particle size of from 10 to 150 nm.

10. The actinic ray curable ink-jet ink of claim 1, wherein the ink has a viscosity at 25°

C. of from 5 to 50 Pa.s.

11. A printed matter, prepared by supplying the actinic ray curable ink-jet of claim 1 onto a recording medium.