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US 2017/0291431 A1Published application
Photo-curable ink jet ink set and ink jet recording method using the same
AssigneeSeiko Epson Corporation
InventorsKeitaro NAKANO, Jun ITO
Life of this patent
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Abstract
A photo-curable ink jet ink set includes an undercoating photo-curable ink jet ink containing a (meth)acrylic acid ester having a vinyl ether group expressed by general formula (I), and an overcoating photo-curable ink jet ink. The undercoating photo-curable ink jet ink has a higher surface tension than the overcoating photo-curable ink jet ink.
Claims5
1-12. (canceled)
An ink jet recording method using a photo-curable ink jet ink set comprising first photo-curable ink jet ink and second photo-curable ink jet ink, the method comprising:
- ejecting first photo-curable ink jet ink onto a recording medium;
- and
- ejecting second photo-curable ink jet ink onto the first photo-curable ink jet ink ejected onto the recording medium;
- curing the first photo-curable ink jet ink and the second photo-curable ink jet ink;
- the curing being conducted using a UV-LED having an emission peak at a wavelength in the range of 350 to 420 nm;
- wherein the first photo-curable ink jet ink has a surface tension and contains a (meth) acrylic acid ester having a vinyl ether group expressed by general formula (I):
- CH2═CR1—COOR2—O—CH═CH—R3, wherein R1 represents a hydrogen atom or a methyl group, R2 represents a divalent organic residue having a carbon number of 2 to 20, and R3 represents a hydrogen atom or a monovalent organic residue having a carbon number of 1 to 11;
- and
- the second photo-curable ink jet ink has a surface tension,
- wherein the surface tension of the first photo-curable ink jet ink is higher than the surface tension of the second photo-curable ink jet ink.
7 more elements
Dependencies are inferred from the claim text.