Abstract: A water-based ink for ink-jet recording includes: a first resin-dispersed pigment, a second resin-dispersed pigment, and water, wherein the following conditions (1) and (2) are satisfied, Q1?1.2??Condition (1): Q2<1.2??Condition (2): in the conditions (1) and (2), Q1 and Q2 are represented by the following formulae (i) and (ii), respectively. Q1=D1a/D1p??(i) Q2=D2a/D2p??(ii) D1a: an average particle size (nm) of the first resin-dispersed pigment after being mixed with an aqueous solution of calcium ions; D1p: an average particle size (nm) of the first resin-dispersed pigment after being mixed with pure water; D2a: an average particle size (nm) of the second resin-dispersed pigment after being mixed with an aqueous solution of calcium ions; D2p: an average particle size (nm) of the second resin-dispersed pigment after being mixed with pure water.

Abstract: A water-based ink for ink-jet recording includes: a solid solution of a quinacridone pigment including C.I. Pigment Red 202 and C.I. Pigment Violet 19; an azo pigment including C.I. Pigment Red 146; and water. A mass ratio (Q:A) of a content amount (Q) of the solid solution of the quinacridone pigment to a content amount (A) of the azo pigment in an entire amount of the water-based ink is in a range of 9:1 to 2:8.

Abstract: A water-based ink for ink-jet recording includes: a solid solution of a quinacridone pigment including C.I. Pigment Red 122 and C.I. Pigment Violet 19; an azo pigment including C.I. Pigment Red 146; and water. Mass ratio (Q:A) of a content amount (Q) of the solid solution of the quinacridone pigment to a content amount (A) of the azo pigment in an entire amount of the water-based ink is in a range of 9:1 to 1:9.

Abstract: There is provided a water-based ink for ink-jet recording including: a self-dispersible black pigment; a resin-dispersed chromatic pigment including a resin-dispersed magenta pigment and a resin-dispersed cyan pigment; and water. A ratio (Col/Bk) of a solid content mass (Col) of the resin-dispersed chromatic pigment to a solid content mass (Bk) of the self-dispersible black pigment is in a range of 0.24 to 0.73 and a mean particle diameter of the self-dispersible black pigment is greater than a mean particle diameter of the resin-dispersed chromatic pigment.

Abstract: A water-based ink for ink-jet recording includes: a first resin-dispersed pigment, a second resin-dispersed pigment, and water, wherein the following conditions (1) and (2) are satisfied, Q1?1.2 ??Condition (1): Q2<1.2 ??Condition (2): in the conditions (1) and (2), Q1 and Q2 are represented by the following formulae (i) and (ii), respectively. Q1=D1a/D1p ??(i) Q2=D2a/D2p ??(ii) D1a: an average particle size (nm) of the first resin-dispersed pigment after being mixed with an aqueous solution of calcium ions; D1p: an average particle size (nm) of the first resin-dispersed pigment after being mixed with pure water; D2a: an average particle size (nm) of the second resin-dispersed pigment after being mixed with an aqueous solution of calcium ions; D2p: an average particle size (nm) of the second resin-dispersed pigment after being mixed with pure water.

Abstract: There is provided a water-based ink for ink-jet recording including: a self-dispersible black pigment; a resin-dispersed chromatic pigment including a resin-dispersed magenta pigment and a resin-dispersed cyan pigment; and water. A ratio (Col/Bk) of a solid content mass (Col) of the resin-dispersed chromatic pigment to a solid content mass (Bk) of the self-dispersible black pigment is in a range of 0.24 to 0.73 and a mean particle diameter of the self-dispersible black pigment is greater than a mean particle diameter of the resin-dispersed chromatic pigment.