Fujifilm Corporation

Yoshiaki Nagata

Keiichi Tateishi

Shinya Hayashi

Yusuke Sakai

Yoshihiko Fujie

Takashi Saitou

Hiroshi Yamada

Tomoaki Nakamura

Nobuo Seto

Kazufumi Omura

Kazushi Furukawa

Takuma Amemiya

Toshiharu Tanaka

Provided are a coloring composition including a compound represented by Formula (1) shown in this specification and a compound represented by Formula (D) shown in this specification, an ink jet recording ink including the coloring composition, an ink jet recording method using the ink jet recording ink, and an ink jet printer cartridge that is filled with the ink jet recording ink.

Coloring composition, ink jet recording ink, ink jet recording method, and ink jet printer cartridge

Provided are a coloring composition including a compound represented Formula (1) shown in the specification and at least one compound selected from the group consisting of the compound represented by Formula (D) shown in the specification and the compound represented by Formula (E) shown in the specification, an ink jet recording ink including the coloring composition, an ink jet recording method using the ink jet recording ink, and an ink jet printer cartridge that is filled with the ink jet recording ink.

Provided are a pigment dispersion liquid including a pigment, a polymer dispersant, and water; and an inkjet ink containing the pigment dispersion liquid. The pigment contains a compound represented by General Formula () described in the specification, a tautomer thereof, or a salt of the compound or the tautomer. The polymer dispersant contains a polymer compound which has a repeating unit represented General Formula (-) and a repeating unit represented General Formula (-) described in the specification, and having a structure represented by General Formula () introduced into at least one terminal of a main chain: in General Formula (), L represents a linking group; Rrepresents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; and the symbol * represents a linking bond.

Pigment dispersion liquid and inkjet ink

An azo pigment or a tautomer thereof represented by the following Formula (1), and having characteristic X-ray diffraction peaks at Bragg angles (2&#x3b8;&#xb1;0.2&#xb0;) of 6.5&#xb0;, 7.1&#xb0; and 21.8&#xb0; in the CuK&#x3b1; characteristic X-ray diffraction. 

Azo pigment, method for preparing azo pigment, dispersion including azo pigment, coloring composition, and inkjet recording ink

There is provided a pigment dispersion including an azo pigment or a tautomer thereof represented by the following Formula (1) and having characteristic X-ray diffraction peaks at Bragg angles (2&#x3b8;&#xb1;0.2&#xb0;) of 4.8&#xb0;, 7.2&#xb0; and 9.7&#xb0; in a CuK&#x3b1; characteristic X-ray diffraction. 

Dispersion including azo pigment, coloring composition, inkjet recording ink and method for preparing dispersion

An ink composition containing at least two kinds of water-soluble long-wavelength dyes whose absorption spectrum in an aqueous solvent has a maximum wavelength of 550 nm to 700 nm, in which at least one kind of the water-soluble long-wavelength dyes is a first water-soluble long-wavelength dye of an azo compound represented by the following Formula (1), at least one kind of the water-soluble long-wavelength dyes is a second water-soluble long-wavelength dye that is different from the first water-soluble long-wavelength dye, and the second water-soluble long-wavelength dye is a compound having two to four azo groups conjugated with each other per molecule, an ink for inkjet recording using the ink composition, and an inkjet recording method using the ink for inkjet recording using the ink for inkjet recording. 

Ink composition, ink for inkjet recording and inkjet recording method

There is provided an azo pigment having excellently good color reproducibility, dispersibility, and storage stability of pigment dispersions and having excellent hue and tinctorial strength. An azo pigment represented by the following formula (1) and having characteristic peaks at Bragg angles (20&#xb1;0.2&#xb0;) of 7.2&#xb0;, 13.4&#xb0;, 15.0&#xb0; and 25.9&#xb0; in X-ray diffraction with characteristic Cu K&#x3b1; line, and a tautomer thereof: 

Azo pigment, process for producing azo pigment, dispersion containing azo pigment, and coloring composition

An azo pigment of formula (1), a tautomer of the azo pigment, or a salt or hydrate thereof, are provided:  Gand Geach is a non-metal atomic group which can form a 5- or 6-membered heterocyclic ring, The rings may be monocyclic or condensed and are optionally substituted. X is a hetero atom. n is an integer of 1 to 4. When n=2, 3, or 4, the compound is a dimer, trimer, or tetramer, respectively. A is a substituent. The azo pigment has excellent coloring characteristics such as high tinctorial strength and hue. It also has excellent durability including high resistance to light and ozone. A pigment dispersion containing the azo pigment and a coloring composition are also provided.

AZO pigment, pigment dispersion containing the AZO pigment, and coloring composition

A monoazo pigment is represented by the general formula (1), a tautomer of the monoazo pigment, and a salt or a hydrate thereof: in which R, P, and Qeach independently represents a hydrogen or a substituent, G represents the non-metallic atoms necessary to complete a 5- to 6-membered heterocyclic group, W represents a substituent capable of binding to the heterocyclic group constituted by G, t represents an integer of from 0 to 5, Het-1 represents a group selected from the aromatic heterocyclic groups represented by the general formula (2) as recited in the claims and disclosure of the invention.

Azo pigment, and pigment dispersion, coloring composition and ink composition for inkjet recording containing the same

An azo pigment represented by the following general formula (1), a tautomer of the azo pigment, and a salt or a hydrate thereof: 

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Kanagawa, Japan

Yoshiaki Nagata