Ink set

Details Ink set Ink set

2008-07-08

2008-07-08

Cain, Edward J (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S161000, C106S031270, C106S031600, C524S556000, C524S558000

Reexamination Certificate

active

07396863

ABSTRACT:
An ink set comprising a black ink and a color ink, wherein the black ink comprises an aqueous dispersion of water-insoluble vinyl polymer particles containing an oil-soluble black dye or carbon black, the vinyl polymer particles have an ionicity opposite to that of the color ink, and the vinyl polymer comprises a water-insoluble vinyl polymer prepared by copolymerizing (a) a salt forming group-containing monomer, (b) a monomer represented by the formula (I):in-line-formulae description="In-line Formulae" end="lead"?CH2═C(R1)COO(R2O)pR3  (I)in-line-formulae description="In-line Formulae" end="tail"?wherein R1is hydrogen atom or a lower alkyl group, R2is a divalent hydrocarbon group which may have a hetero-atom, R3is a monovalent hydrocarbon group which may have a hetero-atom, and p is a number of 1 to 60, (c) a macromer, and (d) a monomer copolymerizable with these monomers. The ink set can be used as an ink set for inkjet recording, which is excellent in not only fixing abilities and water resistance, but also bleeding resistance and jettability, and can form very clear printouts.

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Machine Translation of JP 2000-191972 A.

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