AQUEOUS INK, INK JET RECORDING METHOD, INK CARTRIDGE, RECORDING UNIT, INK JET RECORDING APPARATUS, AND IMAGE
Patent №
US 7,868,060
Granted
2011-01-11
Filed 2008
Owner
CANON KABUSHIKI KAISHA
Lab
—
AI components
1
evo
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
12024222
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/cm1.5 or more and 3.2 cal0.5/cm1.5 or less.
AI classification
Ownership
CANON KABUSHIKI KAISHA
assignment · 214190856
Assignors
SAKAI, JUNICHI, YAMASAKI, KOUSUKE, SUZUKI, KATSUHIKO, TSUJI, ITARU, TAKANO, AKI, TAKAYAMA, HIDEKI, SATO, SHIN-ICHI
On an employer assignment, the assignors are typically the inventors.