Optical fiber and fabrication process and apparatus of same

(19)

(11)

EP 0 767 260 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	11.06.1997 Bulletin 1997/24

(43)	Date of publication A2:
	09.04.1997 Bulletin 1997/15

(21)	Application number: 96202734.8

(22)	Date of filing: 02.10.1996

(51)	International Patent Classification (IPC)⁶: D01D 5/36, D01D 5/253

(84)	Designated Contracting States:
	DE FR GB

(30)

Priority:

02.10.1995 JP 278306/95

(71)	Applicants:
	Tanaka Kikinzoku Kogyo K.K. Chuo-ku Tokyo (JP) NISSAN MOTOR CO., LTD. Yokohama-shi Kanagawa-ken (JP)

(72)	Inventors:
	Shimizu, Susumu, Tanaka Kikinzoku Kogyo K.K. Tokyo (JP) Sakihara, Akio, Tanaka Kikinzoku Kogyo K.K. Tokyo (JP) Kumazawa, Kinya, Nissan Motor Co., Ltd. Yokohama-shi, Kanagawa (JP) Tabata, Hiroshi, Nissan Motor Co., Ltd. Yokohama-shi, Kanagawa (JP)

(74)	Representative: Pellegri, Alberto et al
	c/o Società Italiana Brevetti S.p.A. Via Puccini, 7 21100 Varese 21100 Varese (IT)

(54)	Optical fiber and fabrication process and apparatus of same

(57) Disclosed herein are a fabrication process of optical fiber, a fabrication machine of optical fiber and optical fiber fabricated thereby. In the fabrication machine, for smoothly supplying sea part fluid into sea parts between adjacent wings, a plurality of cylinders are connected to the bottom of a spinning head. In accordance with the present invention, the above fluid guided by the cylinders is supplied to the space between the adjacent wings with certainty so that the wings are never fused to spin the optical fiber having the predetermined optical characteristics.

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