Abstract: The present invention relates to a pigment ink composition that can fulfill excellent print stability, and performances and drying performance of printed matters. The ink composition comprises: at least a pigment; an organic solvent; and two or more kinds of binder resins having different weight average molecular weights (Mw), wherein, when a binder resin having lowest weight average molecular weight (Mw) is marked as ?, and a binder resin having higher weight average molecular weight (Mw) than that of the binder resin ? and meeting formula (3) is marked as ? among the two or more kinds of binder resins to be used, the ink composition meets formulae (1) and (2): Formula (1): Mw??Mw??10,000, Formula (2): 1,000<Mw?<30,000, and Formula (3): 20,000<Mw?<100,000, wherein Mw? represents the weight average molecular weight of the binder resin ?, and Mw? represents the weight average molecular weight of the binder resin ?.

Abstract: Provided is a maintenance liquid for inkjet printers, which comprises at least one of glycol ethers and glycol esters represented by the following general formulas (1) to (3), and 45 to 10 mg/L of dissolved oxygen: R1CO(OR2)xOR3??General formula (1) R4CO(OR5)YOCOR6??General formula (2) R7(OR8)ZOR9??General formula (3) wherein R2, R5, and R8 each independently represent an ethylene group or a propylene group, R1, R3, R4, and R6 each independently represent an alkyl group having 1 to 4 carbon atoms, R7 and R9 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and X, Y, and Z each independently represent an integer of 1 to 4.

Abstract: A non-aqueous ink jet which has less bad odor, has excellent safety and sanitariness, excellent resin dissolvability, excellent printing stability and excellent dryability, causes no corrosion of printers, and has good adhesiveness to non-absorbent substrates, and an ink set are provided. In the non-aqueous inkjet ink comprising a pigment, a resin and a mixed solvent, the mixed solvent comprises diethylene glycol dialkyl ether and tetraethylene glycol dialkyl ether.

Abstract: The present invention relates to a pigment ink composition that can fulfill excellent print stability, and performances and drying performance of printed matters. The ink composition comprises: at least a pigment; an organic solvent; and two or more kinds of binder resins having different weight average molecular weights (Mw), wherein, when a binder resin having lowest weight average molecular weight (Mw) is marked as ?, and a binder resin having higher weight average molecular weight (Mw) than that of the binder resin ? and meeting formula (3) is marked as ? among the two or more kinds of binder resins to be used, the ink composition meets formulae (1) and (2): Formula (1): Mw??Mw??10,000, Formula (2): 1,000<Mw?<30,000, and Formula (3): 20,000<Mw?<100,000, wherein Mw? represents the weight average molecular weight of the binder resin ?, and Mw? represents the weight average molecular weight of the binder resin ?.

Abstract: Present invention relates to an inkjet ink used for a polyvinyl chloride resin sheet, wherein the inkjet ink comprises an organic solvent, a pigment and a vinyl chloride-vinyl acetate resin, the organic solvent is a mixed solvent comprising at least one compound selected from the group consisting of compounds represented by a formula (1) and compounds represented by a formula (2), together with a lactone compound, and the quantity of the lactone compound is within a range from 1 to 40% by weight relative to the total weight of the ink. [Formula 1] CH3CO(OR1)mOR2??(1) (wherein, R1 represents an ethylene group or propylene group, R2 represents an alkyl group of 1 to 4 carbon atoms, and m represents an integer from 1 to 3) [Formula 2] CH3CH(OH)COOR3??(2) (wherein, R3 represents an alkyl group of 1 to 8 carbon atoms).

Abstract: A non-aqueous ink jet which has less bad odor, has excellent safety and sanitariness, excellent resin dissolvability, excellent printing stability and excellent dryability, causes no corrosion of printers, and has good adhesiveness to non-absorbent substrates, and an ink set are provided. In the non-aqueous inkjet ink comprising a pigment, a resin and a mixed solvent, the mixed solvent comprises diethylene glycol dialkyl ether and tetraethylene glycol dialkyl ether.

Abstract: Provided is a maintenance liquid for inkjet printers, which comprises at least one of glycol ethers and glycol esters represented by the following general formulas (1) to (3), and 45 to 10 mg/L of dissolved oxygen: R1CO(OR2)xOR3??General formula (1) R4CO(OR5)YOCOR6??General formula (2) R7(OR8)ZOR9??General formula (3) wherein R2, R5, and R8 each independently represent an ethylene group or a propylene group, R1, R3, R4, and R6 each independently represent an alkyl group having 1 to 4 carbon atoms, R7 and R9 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and X, Y, and Z each independently represent an integer of 1 to 4.

Abstract: An ink composition containing an organic solvent and a pigment, which has a little amount of smell, excellent safety and health properties, excellent resin solubility, excellent printing stability and excellent drying properties, causes no corrosion to a printer, and is excellent in adhesion to non-absorbable printing media and good printability, wherein the ink composition comprises as the organic solvent at least one compound selected from compounds of the formula (1) and (2), wherein each of R1, R2 and R4 independently represents an oxygen atom or —NR6— wherein R6 represents an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group, a hydroxyl group or a hydrogen atom, and each of R3 and R5 independently represents a branched or non-branched hydrocarbon group represented by CmHn wherein m is an integer of 2 to 8 and n is an integer of 2m-4, 2m-2 or 2m.

Abstract: Present invention relates to an inkjet ink used for a polyvinyl chloride resin sheet, wherein the inkjet ink comprises an organic solvent, a pigment and a vinyl chloride-vinyl acetate resin, the organic solvent is a mixed solvent comprising at least one compound selected from the group consisting of compounds represented by a formula (1) and compounds represented by a formula (2), together with a lactone compound, and the quantity of the lactone compound is within a range from 1 to 40% by weight relative to the total weight of the ink.

Abstract: An ink composition containing an organic solvent and a pigment, which has a little amount of smell, excellent safety and health properties, excellent resin solubility, excellent printing stability and excellent drying properties, causes no corrosion to a printer, and is excellent in adhesion to non-absorbable printing media and good printability, wherein the ink composition comprises as the organic solvent at least one compound selected from compounds represented by the formulae (1) to (3), wherein each of R1, R2, R3, R4, R7 and R8 independently represents an alkylene group having 1 to 4 carbon atoms or an alkenylene group having 2 to 4 carbon atoms and each of R5, R6 and R9 independently represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms.

Abstract: An ink composition containing an organic solvent and a pigment, which has a little amount of smell, excellent safety and health properties, excellent resin solubility, excellent printing stability and excellent drying properties, causes no corrosion to a printer, and is excellent in adhesion to non-absorbable printing media and good printability, wherein the ink composition comprises as the organic solvent at least one compound selected from compounds of the formulae (1) and (2), wherein each of R1, R2 and R4 independently represents an oxygen atom or —NR6— wherein R6 represents an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group, a hydroxyl group or a hydrogen atom, and each of R3 and R5 independently represents a branched or non-branched hydrocarbon group represented by CmHn wherein m is an integer of 2 to 8 and n is an integer of 2m-4, 2m-2 or 2m.

Abstract: An ink composition containing an organic solvent and a pigment, which has a little amount of smell, excellent safety and health properties, excellent resin solubility, excellent printing stability and excellent drying properties, causes no corrosion to a printer, and is excellent in adhesion to non-absorbable printing media and good printability, wherein the ink composition comprises as the organic solvent at least one compound selected from compounds represented by the formulae (1) to (3), wherein each of R1, R2, R3, R4, R7 and R8 independently represents an alkylene group having 1 to 4 carbon atoms or an alkenylene group having 2 to 4 carbon atoms and each of R5, R6 and R9 independently represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms.