Patent ID: 7152961
Filing Date: 2006-12-26
Classification: B41J,Y10T

Abstract:
1. An inkjet printhead integrated circuit that comprises a substrate that defines a plurality of ink passages; an array of control and drive circuits positioned on the substrate, each control and drive circuit having a drive transistor that includes a series of parallel traces; 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 a plurality of elongate actuators, each actuator anchored to the substrate at a fixed end and overlying and spaced from, an associated control and drive circuit, and including a heater element for differential thermal expansion and contraction and thus displacement of the actuator, the array being configured to define a plurality of sets of inkjet nozzles, with each set comprising a pair of rows of inkjet nozzles, each nozzle chamber structure of one row being adjacent a nozzle chamber structure of another row, such that, in each set, the nozzle chamber structures are interposed between rows of actuators.