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,...

2011-01-11

2011-01-11

Niland, Patrick D (Department: 1762)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C347S001000, C347S084000, C347S085000, C347S086000, C347S095000, C347S100000, C427S256000, C427S258000, C427S288000, C427S402000, C427S407100, C427S411000, C428S411100, C428S500000, C523S161000, C524S401000, C524S495000, C524S496000, C524S500000, C524S556000, C524S558000

Reexamination Certificate

active

07868060

ABSTRACT:
Provided is an aqueous ink with high storage stability and scratch resistance at such a high level that the coloring material of an image is not scraped off even when lightly touched with a sharp product. The aqueous ink includes a water-insoluble coloring material and plural polymers. The plural polymers include a polymer A which relatively contributes to dispersion of the water-insoluble coloring material and a polymer B which does not relatively contribute to the dispersion of the water-insoluble coloring material compared to the polymer A. The polymer A includes a block copolymer having an acid value of 120 mgKOH/g to 180 mgKOH/g and having an ethylene oxide group as a nonionic group. The polymer B has an acid value of 150 mgKOH/g or less and a hydrogen bond parameter (δh) of the polymer obtained by solubility parameters of monomers constituting the polymer of 1.0 cal0.5/cm1.5or more and 3.2 cal0.5/cm1.5or less.

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