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Printhead

  • US 7,380,906 B2
  • Filed: 03/21/2005
  • Issued: 06/03/2008
  • Est. Priority Date: 10/16/1998
  • Status: Expired due to Fees
First Claim
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1. A printhead for ejecting ink, the printhead comprising:

  • a first row of nozzles;

    a first ink supply for storing a first type of ink and being in fluid communication with each nozzle in the first row; and

    wherein each nozzle comprises;

    a nozzle chamber having a nozzle opening;

    a shift register for accepting print data from a printhead controller;

    a transfer register for receiving the print data from the shift register;

    a drive transistor for supplying power to the actuator; and

    an actuator for ejecting ink through the nozzle opening,and wherein said actuator at least partially overlies said shift register, said transfer register and/or said drive transistor such that an area of printhead occupied by each nozzle is minimized.

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