Sakata Inx Corporation

Ryuta Noda

Hiroyuki Konishi

Yoichi Sato

Ayumi Minegishi

Satoshi Hirakawa

Masahiro Ueki

Masaki Murakami

An object is to obtain an ink set capable of forming images of excellent image quality even when an acidic atmosphere, arising from use of a volatile acid in a pretreatment solution, is present in the vicinity of ink nozzles, etc. As a solution, an ink set containing a pretreatment solution and an ink composition is provided, wherein: the pretreatment solution contains an organic acid having a boiling point of 120° C. or lower at 1 atmospheric pressure; and the ink composition contains a pigment and an alkali-soluble resin having an acid value of 200 mgKOH/g or higher or crosslinked substance thereof accounting for 1.8% by mass or more in the ink composition, and further contains a water-dispersible resin and water.

Ink kit

An object is to achieve both good washing fastness and texture by combining a urethane resin of high fracture elongation with a small quantity of crosslinking agent. As a means for achieving the object, a white inkjet ink composition for textile printing is provided that contains a white pigment, a water-dispersible urethane resin having reactivity to cationic compounds, a crosslinking agent, a water-soluble organic solvent, and water; wherein the crosslinking agent is contained by 0.02 to 0.15 parts by mass relative to 1 part by mass of the water-dispersible urethane resin, and as the water-soluble organic solvent, a glycol ether that dissolves by 1 to 60 g in 100 g of water is contained.

White inkjet ink composition for textile printing

An object is to achieve both good washing fastness and texture by combining a urethane resin of high fracture elongation with a small quantity of crosslinking agent. As a means for achieving the object, an inkjet ink composition for textile printing is provided that contains a pigment, a water-dispersible resin, a crosslinking agent, and water; wherein, as the water-dispersible resin, a resin of 1200 to 1800% in fracture elongation and 10 to 48 MPa in tensile strength is contained by 1.0 to 3.0 parts by mass relative to 1 part by mass of the pigment, and the crosslinking agent is contained by 0.03 to 0.17 parts by mass relative to 1 part by mass of the water-dispersible resin.

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Osaka, Japan

Ryuta Noda