(19)
(11) EP 0 429 002 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.11.1991 Bulletin 1991/48

(43) Date of publication A2:
29.05.1991 Bulletin 1991/22

(21) Application number: 90121860.2

(22) Date of filing: 15.11.1990
(51) International Patent Classification (IPC)5: B41J 2/345
(84) Designated Contracting States:
DE FR GB

(30) Priority: 17.11.1989 JP 300441/89

(71) Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Kadoma-shi, Osaka-fu, 571 (JP)

(72) Inventors:
  • Ohtsuki, Toshinori
    Yawata-shi, Kyoto-fu (JP)
  • Hamada, Tutomu
    Hirakata-shi, Osaka-fu (JP)
  • Saeki, Kiyoshi
    Toyonaka-shi, Osaka-fu (JP)

(74) Representative: Eisenführ, Speiser & Partner 
Martinistrasse 24
28195 Bremen
28195 Bremen (DE)


(56) References cited: : 
   
       


    (54) Thermal recording head


    (57) A thermal recording head includes a pair of electrode fine wires (10, 20) and a resistance heating element (50). A peripheral surface of each electrically conductive core (30) of the fine wires is covered with an insulating layer (40). Each electrode fine wire in the pair of fine wires is arranged to form each line while end surfaces of the pair of fine wires confront each other through a space. Instead, the pair of fine wires are arranged to form a line while end surfaces of the pair of fine wires are lined up with each other. The element is electrically connected the cores exposed at the end surfaces of the pair of fine wires with each other to apply a signal current to the pair of fine wires, and generates heat in correspondence with the current.






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