Phase Change Ink Containing Polyester For Improved Image Robustness

A process comprising:

• (1) incorporating into an ink jet printing apparatus a phase change ink composition comprising an amorphous compound;
• a crystalline compound;
• a polyester polymer, wherein the polyester has a molecular weight of from about 500 to about 8,000 and a polydispersity index of from about 1.0 to about 8.0;
• an optional synergist;
• an optional dispersant;
• and a colorant;
• (2) melting the ink;
• and
• (3) causing droplets of the melted ink to be ejected in an imagewise pattern onto a substrate.

An ink jet printer stick or pellet containing a phase change ink composition comprising an amorphous compound;

• a crystalline compound;
• a polyester polymer, wherein the polyester has a molecular weight of from about 500 to about 8,000 and a polydispersity index of from about 1.0 to about 8.0;
• an optional synergist;
• an optional dispersant;
• and a colorant.