Abstract: The present invention provides an ink jet ink composition containing at least water, a colorant and a water soluble organic solvent. The ink jet ink composition contains at least one amine compound represented by the following formula (1) in a range of 10 to 30% by mass: wherein the amine compound represented by the formula (1) is any one of primary to tertiary amine compounds; at least one of three substituents represented by R1, R2 and R3 in the formula (1) includes a hydrocarbon group having a hydroxyl group; and none of the three substituents contain an alkyl group having at its terminal either one of —CO2M and —SO3M in which M represents an atom or an atomic group selected from hydrogen, an alkali metal, an alkaline earth metal, an ammonium group and an organic amine group.

Abstract: The present invention provides an ink-jet ink set including an ink-jet ink containing a colorant and a surfactant, and a treatment liquid, wherein an ink droplet formed by bringing the ink-jet ink into contact with the treatment liquid has a ratio (H/R) of height (H) to contact-area diameter (R) of from 0.15 to 0.30, the ratio (H/R) is detected at a point 100 milliseconds (ms) after ejecting the ink droplet onto a plain paper. The present invention also provides an ink-jet recording method and ink-jet recording apparatus using the ink-jet ink set.

Abstract: A liquid composition containing at least water, a photopolymerization initiator, a water-soluble organic solvent and a polymerizable compound that can cause a polymerization reaction due to the photo polymerizing initiator, wherein the polymerizable compound is contained two or more kinds, the glass transition temperature (Tg) of at least one kind of the polymerizable compound being 50° C. or more, and the glass transition temperature (Tg) of at least one kind thereof being 10° C. or less, an ink set for ink jet, and a recording method and a recording apparatus using the same.

Abstract: The present invention provides an ink jet ink composition containing at least water, a colorant and a water soluble organic solvent. The ink jet ink composition contains at least one amine compound represented by the following formula (1) in a range of 10 to 30% by mass: wherein the amine compound represented by the formula (1) is any one of primary to tertiary amine compounds; at least one of three substituents represented by R1, R2 and R3 in the formula (1) includes a hydrocarbon group having a hydroxyl group; and none of the three substituents contain an alkyl group having at its terminal either one of —CO2M and —SO3M in which M represents an atom or an atomic group selected from hydrogen, an alkali metal, an alkaline earth metal, an ammonium group and an organic amine group.

Abstract: The present invention provides an ink-jet ink set including an ink-jet ink containing a colorant and a surfactant, and a treatment liquid, wherein an ink droplet formed by bringing the ink-jet ink into contact with the treatment liquid has a ratio (H/R) of height (H) to contact-area diameter (R) of from 0.15 to 0.30, the ratio (H/R) is detected at a point 100 milliseconds (ms) after ejecting the ink droplet onto a plain paper. The present invention also provides an ink-jet recording method and ink-jet recording apparatus using the ink-jet ink set.

Abstract: A liquid composition containing at least water, a photopolymerization initiator, a water-soluble organic solvent and a polymerizable compound that can cause a polymerization reaction due to the photo polymerizing initiator, wherein the polymerizable compound is contained two or more kinds, the glass transition temperature (Tg) of at least one kind of the polymerizable compound being 50° C. or more, and the glass transition temperature (Tg) of at least one kind thereof being 10° C. or less, an ink set for ink jet, and a recording method and a recording apparatus using the same.

Abstract: A recording paper containing pulp fibers, a filler, and an amine, wherein the amine is a primary, secondary, or tertiary amine represented by the following Formula (&agr;). In the following Formula (&agr;), at least one of substituents represented by R1, R2, and R3 is a hydrocarbon group containing a hydroxyl group. In addition, also provided are an ink jet recording method including recording images on the recording paper; an ink jet recording device equipped with a recording head for ejecting ink onto the recording paper; an electrophotographic recording method including fusing toner images on the recording paper surface; and an electrophotographic recording device including a fusing means that fuses a toner image on the recording paper surface.

Abstract: The present invention provides an ink jet ink composition containing at least water, a colorant and a water soluble organic solvent.