Fixer inks for use with ink jet inks
This disclosure provides an ink jettable fixer ink including a water soluble or water dispersible amphoteric polymer, wherein the amphoteric polymer contains both a cationic charge and an anionic charge within the same molecule, wherein the mole ratio of cationic charge to anionic charge is greater than 1; wherein the ink jettable fixer ink does not contain a colorant; and wherein the amphoteric polymer forms a water insoluble solid precipitate when mixing with an anionic charged ink jet ink. These fixer inks when used with aqueous colorant containing ink jet inks give improved optical density and chroma.
E I du Pont de Nemours and Company
C B C
C09D B41J C09D
inventional inventional inventional
Xiaoqing
Li