Ink composition, two-pack curing ink composition set, and recording method and recorded matter using these
AssigneeSeiko Epson Corporation
InventorsKeitaro Nakano, Takashi Oyanagi
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Abstract
The present invention is directed to an ultraviolet curing ink jet ink composition which contains at least a polymerizable compound and a photopolymerization initiator, and is free from an aqueous solvent. The polymerizable compound comprises at least a urethane oligomer, and the photopolymerization initiator comprises an acylphosphineoxide and α-hydroxyketone. The polymerizable compound further comprises an allyl compound and/or an N-vinyl compound.
Claims10
An ultraviolet curing ink jet ink composition which contains at least a polymerizable compound and a photopolymerization initiator, and is free from an aqueous solvent, wherein the polymerizable compound comprises at least a urethane oligomer, and wherein the photopolymerization initiator comprises an acylphosphineoxide and a-hydroxyketone,
- wherein the polymerizable compound comprises an allyl compound and/or an N-vinyl compound, and
- wherein the content of the allyl compound and/or the N-vinyl compound in the ultraviolet curing ink jet composition is from 20 to 80% by weight.
Dependencies are inferred from the claim text.