Patent ID: 7156508
Filing Date: 2007-01-02
Classification: B41J

Abstract:
1. A printhead module for a printhead assembly, comprising a unitary arrangement of a support member, at least two printhead integrated circuits, each of which has nozzles formed therein for delivering printing fluid onto the surface of print media, at least two fluid distribution members each mounting one of the at least two printhead integrated circuits to the support member, and an electrical connector for connecting electrical signals to the at least two printhead integrated circuits, wherein the support member has at least one longitudinally extending channel for carrying the printing fluid for the printhead integrated circuits and includes a plurality of apertures extending through a wall of the support member arranged so as to direct the printing fluid from the at least one channel to associated nozzles in both, or if more than two, all of the printhead integrated circuits by way of respective ones of the fluid distribution members; and each of the fluid distributing members incorporates a laminated stack of layers, each layer having apertures for distributing the printing fluid from the support member to the associated printhead integrated circuit, the apertures of each layer from the support member to the associated printhead intergrated circuit being of successively smaller diameter.