Ink composition, inkjet recording method and colored body

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8741046
SERIAL NO

13806981

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Abstract

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A water-based black ink composition which exhibits a low intensity, colorless and neutral black color and provides a black recorded image the printed image of which has high density. The ink composition includes at least one compound represented by formula (1) or a salt thereof and an azo compound having λmax within the range of 550-660 nm. In the formula (1), R1 to R8 independently represent a hydrogen atom; a halogen atom; a sulfo group; a carboxy group; a sulfamoyl group; a carbamoyl group; a C1-C4 alkyl group; a C1-C4 alkoxy group; and a C1-C4 alkoxy group substituted with at least one group selected from a group consisting of a hydroxy group, a C1-C4 alkoxy group, a hydroxy C1-C4 alkoxy group, a sulfo group and a carboxy group. X represents a bivalent cross-linking group.

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Patent Owner(s)

Patent OwnerAddress
NIPPON KAYAKU KABUSHIKI KAISHATOKYO 100-0005

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawaguchi, Akira Tokyo, JP 54 647
Matsui, Takahiko Tokyo, JP 17 131
Ooshima, Kenji Tokyo, JP 8 40
Yoshimoto, Takashi Tokyo, JP 133 1122

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