Printhead assembly

A first printhead module for connection to a further printhead module having a substantially identical external shape as the first printhead module, the first printhead module comprising:

• a plurality of printhead nozzles each provided with an actuator for selectively ejecting print agent therefrom;
• at least one print agent manifold providing a fluid communication pathway between at least one print agent inlet and the plurality of printhead nozzles;
• control circuitry to control the actuators to eject print agent from the printhead nozzles, wherein the control circuitry comprises a CMOS circuit;
• and
• a connection portion arranged to facilitate mounting of the first printhead module to the further printhead module.

A method of manufacturing a printhead module comprising:

• forming an integrated control circuit in a substrate;
• forming a plurality of piezoelectric actuators each in electrical communication with the integrated control circuit;
• forming a plurality of nozzle outlets, each associated with a respective one of the plurality of piezoelectric actuators;
• and
• forming at least one print agent manifold defining a fluid communication pathway between at least one print agent inlet and the plurality of nozzle outlets.