Patent ID: 6406139
Filing Date: 2002-06-18
Classification: C09D

Abstract:
Aqueous dispersoid ink comprising at least water, a water-soluble organic solvent and a colorant, wherein a ratio R of Kt to Ko (=Kt/Ko) satisfies R&lE;5, where Ko (=Dm/Do) is a ratio of a maximum particle diameter Dm to an average particle diameter Do in said ink, both of which diameters are measured by detecting backscattering light and converting a detection result into a particle diameter under a dynamic light scattering method as a measurement principle, and Kt (=Tm/To) is a ratio of a maximum particle diameter Tm to an average particle diameter To in said ink that has been preserved for six months at a constant temperature of 50Â° C., both of which diameters are measured by said principle and detection method.