Aqueous ink for inkjet recording

Details Aqueous ink for inkjet recording Aqueous ink for inkjet recording

2006-08-30

2011-12-27

Kugel, Timothy J. (Department: 1765)

Coating processes

Nonuniform coating

C106S031600, C106S031650, C106S031670, C516S077000, C524S588000

Reexamination Certificate

active

08084090

ABSTRACT:
The present invention relates to (1) a water dispersion for ink-jet printing which includes a self-dispersible pigment (A) containing a salt-forming group and polymer particles (B) containing a constitutional unit derived from a salt-forming group-containing monomer and a constitutional unit derived from a silicone macromer, wherein the polymer particles (B) contain the same salt-forming groups as that contained in and the self-dispersible pigment (A), the water dispersion being excellent in optical density, higher lighter fastness and ejection property; (2) a water-based ink containing the water dispersion; and (3) a method for preventing aggregates from adhering onto an inner surface of nozzles in an ink-jet printing head.

REFERENCES:
patent: 6758559 (2004-07-01), Nakano et al.
patent: 11-12512 (1999-01-01), None
patent: 2000 191967 (2000-07-01), None
patent: 2001 123097 (2001-05-01), None
patent: 2002-20673 (2002-01-01), None
Office Action issued on May 31, 2011 in the corresponding Japanese Patent Application No. 2005-253425 (with English Translation).
Office Action issued Nov. 9, 2010, in Japanese Patent Application No. 2005-253425 with English translation.

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