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
OG exemplary drawing
 
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):

OG Complex Work Unit Drawing
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,

OG Complex Work Unit Drawing
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;

OG Complex Work Unit Drawing
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

OG Complex Work Unit Drawing
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.