INK COMPOSITION, INKJET RECORDING METHOD, AND COLORED MATERIAL

Title:

INK COMPOSITION, INKJET RECORDING METHOD, AND COLORED MATERIAL

Document Type and Number:

WIPO Patent Application WO/2012/002277

Kind Code:

A1

Abstract:

Disclosed is an aqueous black ink composition which enables the formation of an excellent black recorded image having extremely high ozone gas resistance and a neutral and achromatic color. The ink composition comprises: a dye (I) which comprises at least one compound represented by specific formula (1) or at least one tautomer or salt of the compound; a dye (II) which comprises at least one compound represented by specific formula (3) or at least one tautomer or salt of the compound; and a dye (III) which comprises at least one compound represented by specific formula (4) or at least one tautomer or salt of the compound. In formula (1), R1 and R2 independently represent a hydrogen atom, a sulfo group or the like; R3 and R4 independently represent a halogen atom, a sulfo group or the like; and n represents 0 or 1. In formula (3), m represents 0 or 1; R101 to R103 independently represent a hydrogen atom, a sulfo group or a C1-C4 alkoxy group; and a group D represents a phenyl or naphthyl group substituted by 1 to 3 sulfo groups. In formula (4), R201 to R204 independently represent a hydrogen atom, or a C1-C4 alkoxy group substituted by a sulfo group.

Inventors:

KAWAGUCHI AKIRA (JP)
MATSUI TAKAHIKO (JP)
YOSHIMOTO TAKASHI (JP)
OOSHIMA KENJI (JP)

Application Number:

PCT/JP2011/064543

Publication Date:

January 05, 2012

Filing Date:

June 24, 2011

Export Citation:

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Assignee:

NIPPON KAYAKU KK (JP)
KAWAGUCHI AKIRA (JP)
MATSUI TAKAHIKO (JP)
YOSHIMOTO TAKASHI (JP)
OOSHIMA KENJI (JP)

International Classes:

C09D11/00; B41J2/01; B41M5/00; C09B31/28; C09B35/58; C09B43/16

Domestic Patent References:

WO2007077931A1	2007-07-12
WO2005097912A1	2005-10-20
WO2011043184A1	2011-04-14

Foreign References:

JP2009040861A	2009-02-26
JP2009084346A	2009-04-23
JP2009084346A	2009-04-23
JP2009069279A	2009-04-02
JP2005097912A	2005-04-14
JP2007077931A	2007-03-29
JP2009512737A	2009-03-26
JP2005097912A	2005-04-14
JP2004083492A	2004-03-18
JP2007077931A	2007-03-29

Other References: