Patent ID: 7682433

Claim:
An ink set comprising: a plurality of inks including a pigment ink and a dye ink, wherein the pigment ink comprises at least water, a surfactant, a self dispersion pigment, and at least one of a poor medium for self-dispersion pigment and a salt, wherein the surfactant of the pigment ink is polyoxyethylene alkyl ether, wherein a dynamic surface tension, at 25° C., of the pigment ink at a lifetime of 50 milliseconds is higher than 47 mN/m, wherein the dye ink comprises at least water, a surfactant, and a dye, and wherein a content (% by mass) of the surfactant in the pigment ink is from 0.10% by mass or more to 0.75% by mass or less based on the total mass of the pigment ink.