Ink composition, ink cartridge, inkjet recording method, and recorded matter

The present invention provides an ink composition with which the indoor storage stability (gas resistance) of an image produced with an ink composition featuring a phthalocyanine-based cyan dye can be increased without causing any additive precipitation or bronzing. According to one embodiment of th...

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Bibliographische Detailangaben
1. Verfasser:	OKI YASUHIRO,KITAMURA KAZUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES FOR WRITING OR DRAWING ADHESIVES ARTICLES FOR WRITING OR DRAWING UPON BUREAU ACCESSORIES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS CORRECTION OF TYPOGRAPHICAL ERRORS DYES FILLING PASTES i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME INKS LINING MACHINES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS USE OF MATERIALS THEREFOR WOODSTAINS WRITING OR DRAWING IMPLEMENTS
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Beschreibung
Zusammenfassung:	The present invention provides an ink composition with which the indoor storage stability (gas resistance) of an image produced with an ink composition featuring a phthalocyanine-based cyan dye can be increased without causing any additive precipitation or bronzing. According to one embodiment of the invention the ink composition contains at least water, a specific phthalocyanine-based cyan dye, and a specific lithium salt of an aromatic compound having a sulfo group. According to another embodiment of the invention the ink composition contains at least water, a specific phthalocyanine-based cyan dye, and a specific aromatic compound having a sulfo group and/or a salt of said aromatic compound.