US Patent 7367649 Printhead assembly with selectable printhead integrated circuit control

A printhead assembly is provided comprising at least one printhead module comprising at least two printhead integrated circuits, each of which has nozzles formed therein for delivering printing fluid onto the surface of print media, a support member supporting the at least two printhead integrated circuits, and an electrical connector for connecting electrical signals to the at least two printhead integrated circuits, drive electronics incorporating at least one controller arranged to control the printing operation of a selectable number of the at least two printhead integrated circuits via the electrical connector, and a casing in which the at least one printhead module and the drive electronics are removably mounted.