Patent ID: 7015257
Filing Date: 2006-03-21
Classification: C09D,Y10S

Abstract:
1. A photo-polymerizable ink-jet ink composition, comprising: i) a photo-polymerizable composition consisting of photo-polymerizable monomers, ii) a photo-polymerization initiator, and iii) a coloring material, the ink composition being substantially free from a solvent, wherein the photo-polymerizable monomers contain a hexa-functional monomer in a proportion falling within the range of 10% by weight to 30% by weight with respect to a total amount of the ink composition, and the photo-polymerizable monomer other than the hexa-functional monomer is selected from the group consisting of: (i) a bi-functional monomer; (ii) a combination of a bi-functional monomer and a mono-functional monomer; (iii) a combination of a bi-functional monomer and a tri-functional monomer; and (iv) a combination of a bi-functional monomer, a mono-functional monomer, and a tri-functional monomer.