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Temperature control for an ink jet printhead

  • US 4,980,702 A
  • Filed: 12/28/1989
  • Issued: 12/25/1990
  • Est. Priority Date: 12/28/1989
  • Status: Expired due to Term
First Claim
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1. An improved temperature control system for an ink jet printer which includes an ink jet printhead bonded to an underlying heat sink substrate, the control system including a sensing means for sensing the temperature of said printhead, heater means thermally coupled to said printhead, and a heat sink member in thermal communication with said printhead;

  • control means responsive to outputs from said temperature sensing means and adapted to provide or remove power from said heater means, the improvement wherein said temperature sensing means and heater means are resistive layers separated from said heat sink substrate and said printhead by dielectric layers.

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