Ink set and method for making the same

摘要

An ink set includes a light gray ink, a medium gray ink, and a black ink. Each of the inks in the ink set includes a carboxylic polymer. The light gray ink has a carboxylic polymer load equal to or greater than about 4.27 wt %. The medium gray ink has a carboxylic polymer load ranging from about 2.47 wt % to about 3.47 wt %. The black ink has a carboxylic polymer load ranging from about 0.5 wt % to about 2 wt %.