The Furukawa Electric Co., Ltd.

Seiko Epson Corporation

Minoru Kasahara

Yoshihiro Arashitani

Yasuo Nakajima

Hiroki Tanaka

Minoru Saito

Junpei Watanabe

Kouji Mochiduki

Masahiro Yabe

Kenichi Suyama

Nobuaki Orita

Akinori Tsuji

Mikihiro Kajihara

Mitsuhiro Iwaya

Kouji Mochizuki

Hiroshi Kuraseko

Kuniaki Ishizuki

Kazuyoshi Akizuki

Keisuke Ui

An optical fiber ribbon includes a plurality of optical fibers and a ribbon layer covering the plurality of optical fibers. A Young's modulus of the ribbon layer is larger than or equal to 290 MPa and smaller than or equal to 1400 MPa. A static frictional coefficient between a plurality of the optical fiber ribbons is larger than or equal to 0.71 and smaller than or equal to 1.12.

Optical fiber ribbon, ribbon cable and method for manufacturing optical fiber ribbon

The present invention satisfies at least one of the condition of the degree of freedom of a primary layershown in the equation (I) and the condition of the rigidity of a secondary layershown in the equation (II). Thus, a coated optical fibercapable of suppressing transmission loss in a low temperature environment is provided, in which, even when an optical fiberhaving a large effective core cross-sectional area Aof the optical fiberat a wavelength of 1550 nm and having high microbend sensitivity is used, transmission loss in a low temperature environment can be suppressed.[Math. 1]β<600  (I)()×()≤1000  (II)

Coated optical fiber, optical fiber cable, and coated optical fiber ribbon

Provided is a coated optical fiber and an optical fiber cable capable of suppressing transmission loss (microbend loss) even in an optical fiber having high microbend sensitivity. In the present invention, the degree of freedom of a primary layerrepresented by the equation (I) and the rigidity of a secondary layerrepresented by the equation (II) are set in specific ranges, respectively. Thus, the present invention provides a coated optical fibercapable of suppressing the transmission loss even when an optical fiberhaving high microbend sensitivity such as a BI fiber having a large effective core cross-sectional area Aof an optical fiber is used. The present invention can be widely used as a coated optical fiberconstituting a coated optical fiber ribbon or as a coated optical fiberhoused in an optical fiber cable. Further, an optical fiber cable including such coated optical fibersenjoys the effect of the above-described coated optical fiber[Math. 1]&#x3b2;&#x2265;600&#x2003;&#x2003;(I)()&#xd7;()&#x2264;1,000&#x2003;&#x2003;(II)

Coated optical fiber and optical fiber cable

The purpose of the present invention is to provide, by a configuration or method different from conventional art, a coated optical fiber enabling reduced interface delamination between a glass fiber and a primary coating layer when the coated optical fiber is immersed in water, and a reduction of transmission loss increase. A coated optical fiber according to one embodiment of the present invention is provided with a glass fiber, a primary coating layer coated on the glass fiber, a secondary coating layer coated on the primary coating layer, and a colored layer coated on the secondary coating layer. The coated optical fiber is configured so that small water bubbles are generated substantially evenly within the primary coating layer when the coated optical fiber is immersed for 200 days in warm water of 60&#xb0; C.

Coated optical fiber, optical fiber ribbon, and optical cable

The present invention provides a two-layer structure colored optical fiber which includes a colored secondary coating layer improved in collectability and separability. The two-layer structure colored optical fiber in an embodiment of the present invention includes a glass optical fiber, a primary coating layer coating the glass optical fiber, and a colored secondary coating layer coating the primary coating layer. The secondary coating layer has such characteristics that a surface cure percentage is 99% or more at an infrared absorption peak of a wave number of 1407 cmand a surface kinetic friction force in Knot Test is less than 0.075 N.

Colored optical fiber

A colored optical fiber including a glass optical fiber; a primary coating layer that covers the glass optical fiber; a secondary coating layer that covers the primary coating layer; and a colored layer that coats the secondary coating layer. The relaxation modulus after 24 hours at 60&#xb0; C. of of the layers coated is 140 MPa or less.

Colored optical fiber, optical fiber ribbon and optical fiber cable, using colored optical fiber

Provided is a label data generating method of generating label data to create a label by printing a printing image on a tape-shaped member, the method comprising: setting sequential printing for creating the labels by printing a plurality of types of printing images based on each item of individual information which is sequentially read from an information list including the plurality of items of individual information; setting the number of printed copies; and generating the label data so that a plurality of copies of the labels are created, wherein in the generating of the label data, the label data is generated so that the label data creating apparatus performs non-sequential printing that prints the plurality of types of printing images respectively printed for a plurality of copies by the sequential printing in a sequence in which the same printing images are collected for a plurality of copies.

Method of generating label data for printing images that are larger than a tape width of a tape-shaped member, recording medium, label data generating apparatus, and label creating system

The present invention provides an optical fiber in which transmission loss is not easily increased when the optical fiber is dipped in water and then dried and also which has a solvent resistant property and a micro-bend resistant property. An optical fiber according to one embodiment of the present invention is an optical fiber in which at least two layers of coating resin coat the circumference of a glass optical fiber. When a Yang's modulus of the first coating layer of the coating resin is defined by PY (MPa) and an elution rate of the coating resin after dipping in 60&#xb0; C. hot water for 168 hours is defined by E (mass&#xb7;%), a formula of 1.8&#x2266;E&#x2266;8.61&#xd7;PY+1.40 is satisfied.

Optical fiber

A method of manufacturing an optical fiber, comprises applying a UV cured resin to an outer circumference of a running glass optical fiber, forming an accompanying flow composed of an inert gas near a surface of the resin by passing the glass optical fiber immediately after having the resin being applied through an atmosphere of the inert gas, and forming a coating by irradiating the resin coated with the accompanying flow with ultraviolet ray to cure the resin while the glass optical fiber accompanied by the accompanying flow is passed through a UV transmission tube to which a gas containing oxygen is supplied.

Growing community of inventors

Tokyo, Japan

Minoru Kasahara