Patent ID: 7988277

Claim:
An ink set comprising a first aqueous ink comprising a dye; and a second aqueous ink comprising a dye, wherein the first aqueous ink satisfies the following conditions (1) to (3): (1) a dynamic surface tension at a lifetime of 50 milliseconds is from 42 mN/m or more to less than 49 mN/m, (2) a dynamic surface tension at a lifetime of 500 milliseconds is from 28 mN/m or more to 38 mN/m or less, and (3) a difference between the dynamic surface tension at a lifetime of 50 milliseconds and the dynamic surface tension at a lifetime of 500 milliseconds is 7 mN/m or more, and wherein between the first aqueous ink and the second aqueous ink, a dynamic surface tension γ a (mN/m) of an ink A having relatively higher lightness at a lifetime of 500 milliseconds and a dynamic surface tension γ b (mN/m) of an ink B having relatively lower lightness at a lifetime of 500 milliseconds satisfy a relationship of −5≦(γ a −γ b )≦3.