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Inkjet printhead with heater element close to drive circuits

  • US 7,699,440 B2
  • Filed: 12/11/2008
  • Issued: 04/20/2010
  • Est. Priority Date: 07/15/1997
  • Status: Expired due to Fees
First Claim
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1. An inkjet drop ejection apparatus comprising:

  • a substrate for supporting an ejection actuator and drive circuitry for providing a drive pulse to the ejection actuator, the ejection actuator having a heating element, wherein at least part of the drive circuitry is positioned between the substrate and the heating element and within 60 microns of the heating element.

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