| US 7,550,037 B2 | ||
| Ink, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus | ||
| Kumiko Mafune, Kawasaki (Japan); Tomohiro Yamashita, Kawasaki (Japan); and Jun Yoshizawa, Tokyo (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Jun. 10, 2008, as Appl. No. 12/136,393. | ||
| Claims priority of application No. 2007-177459 (JP), filed on Jul. 05, 2007; and application No. 2008-142279 (JP), filed on May 30, 2008. | ||
| Prior Publication US 2009/0011130 A1, Jan. 08, 2009 | ||
| Int. Cl. C09D 11/02 (2006.01); B41J 2/01 (2006.01) | ||
| U.S. Cl. 106—31.48 [347/100] | 12 Claims |

1. An ink comprising a first coloring material, a second coloring material and a third coloring material, wherein the first
coloring material is a compound represented by the following general formula (I), the second coloring material is a compound
represented by the following general formula (II), and the third coloring material is a compound represented by the following
general formula (III):
![]() wherein A is an aromatic or heterocyclic group which may be substituted, B is any group represented by the following general
formulae (1) to (5), and M's are, independently of each other, a hydrogen atom, alkali metal, ammonium or organic ammonium,
![]() wherein R1 to R9 are, independently of one another, a hydrogen atom, halogen atom, aliphatic group, aromatic group, heterocyclic group, carboxyl
group, carbamoyl group, alkoxycarbonyl group, aryloxycarbonyl group, heterocyclic oxycarbonyl group, acyl group, hydroxyl
group, alkoxy group, aryloxy group, heterocyclic oxy group, silyloxy group, acyloxy group, carbamoyloxy group, alkoxycarbonyloxy
group, aryloxycarbonyloxy group, amino group containing an anilino group or heterocyclic amino group, acylamino group, ureido
group, sulfamoylamino group, alkoxycarbonylamino group, aryloxycarbonylamino group, alkyl- or arylsulfonylamino group, heterocyclic
sulfonylamino group, cyano group, nitro group, alkyl- or arylthio group, heterocyclic thio group, alkyl- or arylsulfonyl group,
heterocyclic sulfonyl group, alkyl- or arylsulfinyl group, heterocyclic sulfinyl group, sulfamoyl group, or sulfonic group
with the proviso that each group may be further substituted;
![]() wherein groups R10 are, independently of each other, a hydrogen atom, a hydroxyl group, a carboxyl group, an alkyl group having 1 to 4 carbon
atoms, which may be substituted by a hydroxyl group or an alkoxy group having 1 to 4 carbon atoms, an alkoxy group having
1 to 4 carbon atoms, which may be substituted by a hydroxyl group or an alkoxy group having 1 to 4 carbon atoms, an alkylamino
group having 1 to 4 carbon atoms, which may be substituted by a hydroxyl group or an alkoxy group having 1 to 4 carbon atoms,
a carboxy-(C1-C5)alkylamino group, a bis[carboxy-(C1-C5)alkyl]amino group, an alkanoylamino group having 1 to 4 carbon atoms,
which may be substituted by a hydroxyl group or an alkoxy group having 1 to 4 carbon atoms, a phenylamino group, which may
be substituted by a carboxyl, sulfonic or amino group, a sulfonic group, a halogen atom, or a ureido group, C is an aliphatic
amine residue having a carboxyl or sulfonic group, and M's are, independently of one another, a hydrogen atom, alkali metal,
ammonium or organic ammonium; and
![]() wherein D is a phenyl group having a substituent selected from the group consisting of a carboxyl group, a sulfonic group,
a chlorine atom, a cyano group, a nitro group, a sulfamoyl group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group
having 1 to 4 carbon atoms, which may be substituted by a hydroxyl group, an alkoxy group having 1 to 4 carbon atoms, a sulfonic
group or a carboxyl group, and an alkylsulfonyl group having 1 to 4 carbon atoms, which may be substituted by a hydroxyl group,
sulfonic group or carboxyl group, E and F are, independently of each other, a paraphenylene group having a substituent selected
from the group consisting of a carboxyl group, a sulfonic group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group
having 1 to 4 carbon atoms, which may be substituted by a hydroxyl group, an alkoxy group having 1 to 4 carbon atoms, a sulfonic
group or a carboxyl group, and an alkylsulfonyl group having 1 to 4 carbon atoms, which may be substituted by a hydroxyl group,
sulfonic group or carboxyl group, R11 is an alkyl group having 1 to 4 carbon atoms, which may be substituted by a carboxyl group, a phenyl group, which may be substituted
by a sulfonic group, or a carboxyl group, R12 is a cyano group, carbamoyl group or carboxyl group, and R13 and R14 are, independently of each other, a hydrogen atom, methyl group, chlorine atom or sulfonic group.
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