(19)
(11) EP 0 051 826 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.07.1983 Bulletin 1983/29

(43) Date of publication A2:
19.05.1982 Bulletin 1982/20

(21) Application number: 81109284

(22) Date of filing: 29.10.1981
(84) Designated Contracting States:
DE FR GB

(30) Priority: 07.11.1980 JP 15579180

(71) Applicant: NISSAN MOTOR COMPANY, LIMITED
 ()

(72) Inventors:
  • Akimune, Yoshio
     ()
  • Uchida, Masaaki
     ()
  • Ambe, Satoshi
     ()

   


(54) Method of producing thick film resistor element of accurate resistance


(57) in producing a thick film resistor element (12) having a predetermined resistance by the steps of applying a conducting paste to a substrate (10) to form a desirably patterned paste layer and then firing the substrate (10) to sinter the metal powder contained in the applied paste, the paste-applying and firing steps are performed such that the sintered thick film (12) has a provisional resistance lower than, e.g. 70-85% of, the predetermined resistance, and an alternating voltage which is higher than a maximum voltage to be applied to the thick film resistor element (12) in its practical use is applied to the sintered thick film (12) so as to increase its resistance up to the predetermined resistance. By this method the percentage of acceptable products in mass production can be greatly increased. l






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