US Patent 7845762 Modular printhead with printhead modules including nested parts

A modular printhead includes a chassis and a plurality of ink ejection printhead modules mounted to the chassis. Each printhead module includes a first molding defining a first recess. A second molding is received within the first recess and defines a second recess. An ink ejection integrated circuit (IC) is received within the second recess. A tape automated bond (TAB) film extends from the IC and across the moldings. Typically, the recesses are elongate channels.