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Title:
METHOD FOR MANUFACTURING OPTICAL FIBER STRAND PROVIDED WITH MARK, AND OPTICAL FIBER CABLE
Document Type and Number:
WIPO Patent Application WO/2022/264899
Kind Code:
A1
Abstract:
A method for manufacturing an optical fiber strand (40) provided with a mark comprises a covering step for forming an optical fiber strand (50) by covering a bare optical fiber (60) with a resin layer (70), and a formation step for forming a mark (41) on the resin layer (70) by transferring an ink (121) onto the resin layer (70) from a printing roller (140), the covering step including curing the resin layer (70) so that the resin layer (70) attains a degree of surface curing of 50-90%, expression (1) and expression (2) being satisfied in the formation step, α in expression (1) being the contact angle of the ink (121) with respect to the surface of the resin layer (70), and V in expression (2) being the volume of the ink (121) per 1 µm of length along the axial direction of the optical fiber strand (50).　(1): α ≤ 22°. (2): V ≤ 260 µm3.

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Inventors:
KURAMITSU RYO (JP)
ISHIDA ITARU (JP)
OSATO KEN (JP)
Application Number:
PCT/JP2022/023128
Publication Date:
December 22, 2022
Filing Date:
June 08, 2022
Export Citation:
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Assignee:
FUJIKURA LTD (JP)
International Classes:
G02B6/44; B41M1/10
Foreign References:
JP2019181729A2019-10-24
JP2011191689A2011-09-29
JPH06191872A1994-07-12
JP2005162521A2005-06-23
US20210032160A12021-02-04
JP2004157193A2004-06-03
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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