Patent ID: 6886931
Filing Date: 2005-05-03
Classification: C09D

Abstract:
1. An ink set for ink jet recording, having a plurality of colors of ink jet recording ink, wherein said plurality of colors of ink contain pigments, the aspect ratio (σ) between the major and minor axes of the pigment particles is 2 or less, and the value of η(1−n(σ−1)) (n is a coefficient indicating (η L −η H )/η H , where η L is the viscosity measured at a shear rate of 10 S −1 , and η H is the viscosity measured at a shear rate of 1000 S −1 ; 0.1≧n), which is calculated from the viscosity (η) of said plurality of colors of ink as measured at a shear rate of 200 S −1 and at 20° C., is within ±5% for said plurality of colors of ink.