Patent ID: 8403475

Claim:
A curable phase change ink comprised of an ink vehicle having added thereto a pigment dispersion comprising a pigment and a dispersant, wherein the curable phase change ink as formed, when filtered using a 1 micron filter at a temperature of 85° C., has a slope of ≧5 g/s and a T 2 /T 1 of ≦1.6, wherein T 2 represents a time to filter the last 25 g of a 100 g sample of the phase change ink through the 1 micron filter at 85° C., while T 1 represents the time it takes to filter the first 25 g of the 100 g sample of the phase change ink through the 1 micron filter at 85° C., wherein the curable phase change ink is a cyan, yellow, magenta or black ink, and wherein the curable phase change ink is used together in an ink set comprised of additional inks such that the ink set includes at least one cyan, at least one yellow, at least one magenta and at least one black ink, wherein all of the cyan, yellow, magenta and black inks of the ink set include an identical dispersant, and wherein the dispersant is an amino acrylate block copolymer.