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Thermal head

  • US 4,737,799 A
  • Filed: 10/17/1986
  • Issued: 04/12/1988
  • Est. Priority Date: 10/18/1985
  • Status: Expired due to Fees
First Claim
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1. A thermal head comprising:

  • a heat-generating resistor layer, a power supply conductor layer, an anti-oxidation layer, and an outer wear-proof layer, said layers being successively formed on an electrically insulating substrate, said wear-proof layer being made of a porous film aluminum oxide having holes filled with hard metals which have good thermal conductivity.

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