(19)
(11) EP 0 675 507 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.09.1996 Bulletin 1996/38

(43) Date of publication A2:
04.10.1995 Bulletin 1995/40

(21) Application number: 95301962.7

(22) Date of filing: 23.03.1995
(51) International Patent Classification (IPC)6: H01B 7/00, H01B 3/44
(84) Designated Contracting States:
DE FR GB

(30) Priority: 28.03.1994 JP 82376/94

(71) Applicant: TOTOKU ELECTRIC CO., LTD.
Tokyo 169 (JP)

(72) Inventors:
  • Fujita, Shuzo
    Tokyo (JP)
  • Yoshimura, Shunichi
    Kitasaku-gun, Nagano (JP)
  • Kitazawa, Hiroshi
    Ueda-shi, Nagano (JP)
  • Katagiri, Naoki
    Ueda-shi, Nagano (JP)

(74) Representative: Hamilton, Alistair et al
Mewburn Ellis, York House, 23 Kingsway
London WC2B 6HP
London WC2B 6HP (GB)

   


(54) Semirigid coaxial cable and its method of manufacture


(57) The semirigid coaxial cable 5 comprises a center conductor 1, an insulating layer 2, outer conductor 3 and protective covering layer 4 in order. The insulating layer 2 comprises a first insulating layer 2a made of material having a low permittivity and a second insulating layer 2b made of a resin that can be more easily electroless-plated than the material of the first insulating layer 2a. The outer conductor 3 further comprises a electroless-plated anchoring metal layer 3a and electro-plated conductive metal layer 3b. The conductive metal layer 3b further comprises a copper-plated layer 3c, a glossy copper-plated layer 3d, and a strike plated nickel layer or tin-plated layer 3e.






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