AQUEOUS INK, INK CARTRIDGE AND INK JET RECORDING METHOD

Provided is an aqueous ink for ink jet including: pigments; a urethane resin; and a silicone-based surfactant. The pigments include a first pigment and a second pigment, the first pigment is a naphthol AS-based azo pigment and the second pigment is a quinacridone-based pigment. The urethane resin is...

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Bibliographische Detailangaben
Hauptverfasser:	SHIIBA, KENICHI, KUSADA, MUTSUKI, ISHII, TOMOAKI, IKEGAMI, MASAYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Provided is an aqueous ink for ink jet including: pigments; a urethane resin; and a silicone-based surfactant. The pigments include a first pigment and a second pigment, the first pigment is a naphthol AS-based azo pigment and the second pigment is a quinacridone-based pigment. The urethane resin is a water-soluble urethane resin having a unit derived from a polyisocyanate, a unit derived from a polyol having no acid group and a unit derived from a polyol having an acid group. The silicone-based surfactant is at least one kind selected from the group consisting of compounds represented by the following respective general formulae (1) to (3), has a weight-average molecular weight of 800 or more to 10,000 or less and has an HLB value measured by Griffin's method of 4 or more.