(19)
(11) EP 0 118 640 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.01.1986 Bulletin 1986/04

(43) Date of publication A2:
19.09.1984 Bulletin 1984/38

(21) Application number: 83306808

(22) Date of filing: 09.11.1983
(84) Designated Contracting States:
DE FR GB

(30) Priority: 22.11.1982 US 443712

(71) Applicant: Hewlett-Packard Company
 ()

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

   


(54) Method of adjusting thermal ink jet printers


(57) A method for designing a thermal ink jet printer for minimum cavitation damage of the printhead resistors during bubble collapse and, consequently, maximum lifetime, is shown. The method comprises the steps of selecting a solvent, resistor size and operating temperature so that a calculated B-factor is minimized. The selected parameters can be changed to minimize the calculated B-factor and to achieve a maximum lifetime.






Search report