(19)
(11) EP 0 112 000 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.04.1985 Bulletin 1985/14

(43) Date of publication A2:
27.06.1984 Bulletin 1984/26

(21) Application number: 83306265

(22) Date of filing: 14.10.1983
(84) Designated Contracting States:
DE FR GB

(30) Priority: 15.12.1982 US 449820

(71) Applicant: Hewlett-Packard Company
 ()

(72) Inventor:
  • Meyer, John David
     ()

   


(54) Thermal ink jet printer utilizing secondary ink vaporization


(57) A thermal ink jet printer utilizes secondary vaporization of the ink to minimize cavitation damage to a printhead resistor. The printhead resistor comprises a resistive portion for heat generation and a storage portion for storing heat after the resistive portion cools and for presenting a surface having a temperature in excess of the ink boiling temperature when the initial ink vapor bubble collapses.






Search report