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Method of manufacture of a tapered magnetic pole electromagnetic ink jet printer

  • US 6,231,773 B1
  • Filed: 07/10/1998
  • Issued: 05/15/2001
  • Est. Priority Date: 07/15/1997
  • Status: Expired due to Fees
First Claim
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1. A method of manufacturing an ink jet printhead which includes:

  • providing a substrate, etching the substrate to form a nozzle chamber;

    depositing a sacrificial layer in the nozzle chamber;

    depositing a first permanent layer to form a magnetic field generating means;

    depositing a second permanent layer to form a magnetically responsive plunger arranged displaceably arranged relative to the nozzle chamber and the magnetic field generating means;

    etching the substrate to form a nozzle opening, wherein the plunger is displaced, when activated by the magnetic field generating means, towards a nozzle opening to effect ink ejection from the nozzle opening; and

    removing the sacrificial layer, thereby forming said printhead.

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