Patent ID: 6991318

Claim:
An inkjet printhead device that comprises a substrate that defines a plurality of ink passages; drive circuitry positioned on the substrate; and an array of inkjet nozzles arranged on the substrate, each inkjet nozzle including a nozzle chamber structure that defines a nozzle chamber in fluid communication with a respective ink passage and an ink ejection port in fluid communication with the nozzle chamber, and an elongate actuator extending from the nozzle chamber structure to be anchored to the substrate at one end, the array being arranged on the substrate according to a pattern that is defined by a replication hierarchy in which a first stage rotates an inkjet nozzle by an acute angle with respect to an axis initially passing through the ink ejection port and the actuator, a second stage replicates the inkjet nozzle without rotation a predetermined number of times and a third stage replicates the nozzles of the second stage a predetermined number of times with a rotation of substantially 180 degrees.