Aqueous ink, ink jet recording method, ink cartridge,...

Details Aqueous ink, ink jet recording method, ink cartridge,... Aqueous ink, ink jet recording method, ink cartridge,...

2007-09-11

2007-09-11

Lorengo, J. A (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C347S100000

Reexamination Certificate

active

11356108

ABSTRACT:
An object of the present invention is to provide an aqueous ink which can form a more excellent image in bleeding resistance, character quality and print density than the image formed by using an aqueous ink containing a conventional self-dispersion pigment and a salt. The aqueous ink includes a self-dispersion pigment and a salt, in which the self-dispersion pigment is a pigment containing a pigment particle having a —R—(COOM1)ngroup bonded to a surface of the pigment particle, wherein R represents an alkylene group or an aromatic ring; M1represents a hydrogen atom, an alkali metal, an ammonium or an organic ammonium; and n is an integer of 2 or more.

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