US 7,605,192 B2 · Aqueous ink, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus

Abstract

The present invention relates to an aqueous ink, particularly an aqueous ink suitable for ink jet recording. The ink is an aqueous ink comprising a modified pigment having organic groups chemically attached to the surface of a particle of the pigment and an aqueous medium which is a dispersant of the pigment, wherein the above-described organic group includes a reaction product of a functional group chemically attached to the surface of the pigment directly or via another atomic group with a copolymer of an ionic monomer and a hydrophobic monomer.

Claims1

Dependent claims

An aqueous ink comprising a modified pigment having an organic group chemically attached to the surface of the pigment, and an aqueous medium as a dispersant of the pigment,

wherein said organic group comprises a reaction product of a functional group chemically attached to the surface of the pigment directly or via another atomic group with a copolymer of an ionic monomer and a hydrophobic monomer,
wherein said organic group is contained at a proportion of 10 to 25 wt % relative to the modified pigment, and
wherein the copolymer has an acid value of 140 to 200.

Dependencies are inferred from the claim text.

Facts

Application

11/297,431Filed 9 Dec 2005 · division

Priority

JP 2002-0270514 Feb 2002

Published

US 2006/0089424 A127 Apr 2006

Granted

20 Oct 2009

Term ends

Not estimatedThe source records don’t support an estimate.

Classification3 codes

C09D 11/324
Characterised by colouring agents: containing carbon black
C09D 11/322
Characterised by colouring agents: pigment inks
C09D
Coating compositions

Aqueous ink, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus

Life of this patent

Aqueous ink, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus

Life of this patent

Abstract

Claims1