An object of the present invention is to provide a compound exhibiting a cyan color having properties such as high chroma, high light fastness, and high solubility. The compound is represented by the following General Formula (1).

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In Formula (1), R.sub.1 R.sub.2 each independently represent a linear, branched, or cyclic alkyl group having 6 or more and 12 or fewer carbon atoms, R.sub.3 represents a 4-alkylphenyl group, a 4-halogenated phenyl group, or a 3-alkoxyphenyl group, R.sub.4 represents a linear, branched, or cyclic alkyl group having 1 or more and 8 or fewer carbon atoms, and R.sub.5 represents a linear, branched, or cyclic alkyl group having 1 or more and 8 or fewer carbon atoms or a benzyl group.

An object of the present invention is to provide a compound exhibiting a cyan color having properties such as high chroma, high light fastness, and high solubility. The compound is represented by the following General Formula (1).

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In Formula (1), R.sub.1 R.sub.2 each independently represent a linear, branched, or cyclic alkyl group having 6 or more and 12 or fewer carbon atoms, R.sub.3 represents a 4-alkylphenyl group, a 4-halogenated phenyl group, or a 3-alkoxyphenyl group, R.sub.4 represents a linear, branched, or cyclic alkyl group having 1 or more and 8 or fewer carbon atoms, and R.sub.5 represents a linear, branched, or cyclic alkyl group having 1 or more and 8 or fewer carbon atoms or a benzyl group.

Embodiments of the invention relate to ink compositions suitable for applications in the printing industry, for example continuous inkjet printing, including ultra-high speed continuous inkjet printing. The ink compositions use volatile organic solvents, a colorant, and one or more binder resins including a resin that is a phenolic resole resin, wherein the ink composition is free of methanol, halogens, halogenated compounds and bisphenol-A. A phenolic resole resin of the ink composition preferably contains less than 0.1% by weight of free formaldehyde. The one or more binder resins including the phenolic resole resin may be present in an amount that is from about 5% to about 30% by weight of the ink composition.

Embodiments of the invention relate to ink compositions suitable for applications in the printing industry, for example continuous inkjet printing, including ultra-high speed continuous inkjet printing. The ink compositions use volatile organic solvents, a colorant, and one or more binder resins including a resin that is a phenolic resole resin, wherein the ink composition is free of methanol, halogens, halogenated compounds and bisphenol-A. A phenolic resole resin of the ink composition preferably contains less than 0.1% by weight of free formaldehyde. The one or more binder resins including the phenolic resole resin may be present in an amount that is from about 5% to about 30% by weight of the ink composition.

A surface tension difference between a first ink and a third ink is smaller than a surface tension difference between the first ink and a second ink. A first gradation value for the first ink is quantized to generate a first quantized value, a second gradation value for the second ink is quantized to generate a second quantized value, and a third gradation value for the third ink is quantized to generate a third quantized value. The above quantization processing is performed such that, in a predetermined pixel region, the number of pixels for each of which the second quantized value and the third quantized value both indicate printing is greater than the number of pixels for each of which the first quantized value and the third quantized value both indicate printing.

A surface tension difference between a first ink and a third ink is smaller than a surface tension difference between the first ink and a second ink. A first gradation value for the first ink is quantized to generate a first quantized value, a second gradation value for the second ink is quantized to generate a second quantized value, and a third gradation value for the third ink is quantized to generate a third quantized value. The above quantization processing is performed such that, in a predetermined pixel region, the number of pixels for each of which the second quantized value and the third quantized value both indicate printing is greater than the number of pixels for each of which the first quantized value and the third quantized value both indicate printing.

An inkjet printing apparatus includes a discharge head that discharges ink, and a housing that contains the discharge head, wherein the housing contains a first ink storage member and a second ink storage member that each store ink, and the ink is supplied from each of the first ink storage member and the second ink storage member to the discharge head, wherein the first ink storage member is an ink cartridge not having an ink refilling port for enabling ink refilling by opening a stopper member, and detachable from the inkjet printing apparatus, and wherein the second ink storage member has the ink refilling port.

An inkjet printing apparatus includes a discharge head that discharges ink, and a housing that contains the discharge head, wherein the housing contains a first ink storage member and a second ink storage member that each store ink, and the ink is supplied from each of the first ink storage member and the second ink storage member to the discharge head, wherein the first ink storage member is an ink cartridge not having an ink refilling port for enabling ink refilling by opening a stopper member, and detachable from the inkjet printing apparatus, and wherein the second ink storage member has the ink refilling port.

A finishing method for reactive dye inkjet printing based on a cationic modifier includes: using the inkjet printing method to spray print the cationic modifier ink and the reactive dye ink on the cellulose fiber fabrics' pattern area after being subjected to sizing treatment, then subjecting the fabrics to steaming or baking treatment, and subjecting the fabrics to soaping to get the reactive dye inkjet printing fabrics. The timespan of spray printing the cationic modifier ink and reactive dye ink is 0-2 min. Cationic modifier ink includes 1.0-60.0 wt % cationic modifier. The cationic modifier refers to the molecular whose structure contains reactive group and positive charge group and the number average molecular weight of 100-30000. The reactive group is one or more in the group containing epoxy group, triazine, pyridine, and olefin. The positive charge group is one or more in the group containing quaternary ammonium salt, and ammonium chloride.

A finishing method for reactive dye inkjet printing based on a cationic modifier includes: using the inkjet printing method to spray print the cationic modifier ink and the reactive dye ink on the cellulose fiber fabrics' pattern area after being subjected to sizing treatment, then subjecting the fabrics to steaming or baking treatment, and subjecting the fabrics to soaping to get the reactive dye inkjet printing fabrics. The timespan of spray printing the cationic modifier ink and reactive dye ink is 0-2 min. Cationic modifier ink includes 1.0-60.0 wt % cationic modifier. The cationic modifier refers to the molecular whose structure contains reactive group and positive charge group and the number average molecular weight of 100-30000. The reactive group is one or more in the group containing epoxy group, triazine, pyridine, and olefin. The positive charge group is one or more in the group containing quaternary ammonium salt, and ammonium chloride.