(19)
(11) EP 0 124 312 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.08.1985 Bulletin 1985/35

(43) Date of publication A2:
07.11.1984 Bulletin 1984/45

(21) Application number: 84302524

(22) Date of filing: 13.04.1984
(84) Designated Contracting States:
DE FR GB

(30) Priority: 29.04.1983 US 490104

(71) Applicant: Hewlett-Packard Company
 ()

(72) Inventors:
  • Camis, Tommie
     ()
  • Hay, Robert R.
     ()
  • Spencer, Paul R.
     ()

   


(54) Resistor structures for thermal ink jet printers


(57) A resistive heater is disclosed which comprises two spaced resistive elements (8', 8") separated by a gap so that cavitation of an ink bubble occurs over the gap, thereby minimizing damage to the resistive elements.






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