Patent ID: 6924327

Claim:
An ink set comprising a dark ink composition and a light ink composition that, are mutually of same color, but are of different color density; said dark ink composition and said light ink composition each containing at least a pigment as a colorant, a resin as a dispersant and a resin emulsion comprising a resin component, the resin component of each of said light ink and dark ink compositions being present in each of the respective ink compositions in an amount of 0.1 to 40 wt %; a ratio between resin weight proportion B 1 and pigment weight proportion P 1 (B 1 /P 1 ) in said dark ink composition being lower than a ratio between resin weight proportion B 2 and pigment weight proportion P 2 (B 2 /P 2 ) in said light ink composition, wherein a difference between the ration between resin weight proportion B 2 and pigment weight proportion P 2 (B 2 /P 2 ) in said light ink composition, on the one hand, and the ratio between the resin weight proportion B 1 and pigment weight proportion P 1 (B 1 /P 1 ) in said dark ink composition, on the other hand, is from 0.01 to 0.5; and said resin weight proportion B 1 in said dark ink composition and said resin weight proportion B 2 in said light ink composition differ from each other.