Patent ID: 7401911
Filing Date: 2008-07-22
Classification: B41J,B41M,C09D

Abstract:
1. An ink cartridge comprising: a housing, portions of the housing defining an ink chamber having a nozzle bore, the housing being adapted to heat ink located in the chamber to a temperature exceeding 50° C.; and an ink located in the ink chamber, the ink being adapted to be heated to the temperature exceeding 50° C., wherein the ink is optimized for ejection through the nozzle bore in the form of an ink drop after the ink is heated to the temperature exceeding 50° C., wherein the ink has a composition for printing directly to untreated hydrophobic media, including an aqueous vehicle that contains at least 40 weight percent water and at least 5 weight percent humectant, based on the total weight of the ink composition, and a binder comprising one or more polymers and being capable of redispersing itself in the ink.