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Inkjet printhead integrated circuit with rows of inkjet nozzles

  • US 7,152,961 B2
  • Filed: 06/12/2006
  • Issued: 12/26/2006
  • Est. Priority Date: 10/16/1998
  • Status: Expired due to Fees
First Claim
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1. An inkjet printhead integrated circuit that comprisesa 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.

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