JP2003241042A - Method and apparatus for manufacturing optical fiber ribbon - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a thin coated optical fiber of an optical fiber ribbon by which primary coated optical fibers are integrated with a little adhesive resin and fiber cord separation is facilitated, and to provide an apparatus for the same. <P>SOLUTION: In the method for manufacturing the coated optical fiber of the optical fiber ribbon 1, a plurality of primary coated optical fibers 2 are closely arranged in a line while making them run, and integrated in the shape of a tape by applying the adhesive resin. In this method, an energy beam curing type resin 3 is applied to the flat surface side in the alignment of at least one of the primary coated optical fibers 2 by spraying it from a liquid spray head 10, then the energy beam curing type resin 3 is cured to bond and integrate the primary coated optical fibers 2. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing an optical fiber ribbon, in which a plurality of optical fiber element wires are arranged in close contact with each other in a row and integrated in a tape shape.

[0002]

2. Description of the Related Art With the development of optical communication networks, the density and diameter of optical cables have been increased, and optical fiber ribbons have been widely used in optical cables. Also, for optical wiring from the optical cable to the subscriber system,
An optical fiber ribbon is pulled out from an optical cable, a predetermined optical fiber is separated in the middle, and the optical fiber is dropped to a subscriber's house or the like. For this reason, it has been demanded to make the outer dimensions of the optical fiber ribbon as small as possible to increase the storage density in the optical cable and to easily separate the optical fiber strands into single cores.

In an optical fiber tape core wire, a plurality of optical fiber element wires, each of which is formed by coating a glass fiber with an ultraviolet curable resin or the like, are usually arranged in a line, and the whole is integrated with a tape coating layer of the ultraviolet curable resin or the like. Have been converted. The tape coating layer is
It is formed by using a molding die having an elongated hole shape that fits the coating cross section, but in order to reduce the coating thickness, it is necessary to bring the shaping hole shape closer to the optical fiber strand diameter. In addition, in order to form the tape coating layer as thin as possible, the entire optical fiber array arranged in a row is sprayed with an ultraviolet curable resin and applied, and then the excess resin is squeezed with a molding die. There are also known methods for trimming the outer shape (for example,
See JP-A-61-20012).

However, if the shape of the hole for adjusting the outer shape is made small with the molding die or molding die, the space for accumulating the coating resin material becomes small, and stable coating or molding may not be possible due to pressure fluctuations, etc. There is a limit to reducing the coating thickness with a molding die.

Further, the optical fiber ribbon is separated into a single optical fiber and connected to another optical fiber or a terminal device. At the end of the optical fiber tape,
It is relatively easy to separate into a single core using a single-core separation jig. However, it is difficult to partially peel off the coating layer in the middle portion (the middle portion) of the optical fiber ribbon, even if a single-core separating jig is used, and it is not easy to separate the coating layer.
For this reason, conventionally, various tape structures and separation methods for easily separating a single-core optical fiber from a multi-core optical fiber ribbon have been proposed.

There is also known a structure in which only one surface of the optical fiber ribbon is covered with a tape coating layer (see, for example, JP-A-63-110409). By forming this tape coating layer on only one surface, the optical fiber tape core wire can be thinned by the tape coating thickness on one surface side, and it is structurally easy to perform single fiber separation. However, the technique disclosed in the above publication is that the tape coating layer is coated with a resin or dipped in a resin solution, squeezed with a soft felt or roller, and then dried to be integrated into a tape. With this tape forming method, it is difficult to form a stable tape coating layer on only one side, and it is also difficult to control the coating thickness.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and allows optical fiber strands to be integrated with each other with a small amount of adhesive resin, which reduces the outer dimensions and also the single core of the optical fiber. An object of the present invention is to provide a manufacturing method and a manufacturing apparatus of an optical fiber ribbon which can be easily separated.

[0008]

SUMMARY OF THE INVENTION A method of manufacturing an optical fiber ribbon according to the present invention comprises a plurality of optical fiber strands arranged in a row while running while closely running, coated with an adhesive resin, and integrated into a tape shape. A method for manufacturing an optical fiber ribbon, which comprises a plurality of optical fiber strands, at least one array plane side of which is coated with an energy ray-curable resin by jetting with a liquid jet head. It is characterized in that a curable resin is cured to bond and integrate a plurality of optical fiber strands.

The optical fiber tape core wire manufacturing apparatus of the present invention is an optical fiber in which a plurality of optical fiber element wires are closely aligned while running and are arranged in a line, and an adhesive resin is applied to integrate them into a tape shape. A tape core manufacturing apparatus, comprising: a liquid ejecting head for applying an energy ray curable resin to at least one array plane side of a plurality of optical fiber wires; and a resin ejecting on / off of the liquid ejecting head. A liquid ejection control device for controlling and an energy beam irradiation device for curing the energy beam curable resin are provided.

[0010]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to FIG. FIG. 1 (A) is a diagram for explaining the outline of the manufacturing method of the present invention, and FIG. 1 (B) and FIG. 1 (C) are diagrams showing details of the line guide. In the figure, 1 is an optical fiber tape core wire, 2 is an optical fiber element wire, 3 is an adhesive resin, 4 is a supply drum, 5 is a line collecting guide roller, 7 is a line collecting guide, 7a is a guide groove, 7b is a bottom wall, and 7c. Is a suction hole, 8 is a suction pump,
Reference numeral 9 is a liquid ejection control device, 10 is a liquid ejection head, 11 is an energy beam irradiation device, 12 is a guide roller, 13 is a capstan roller, 14 is a winding drum, and 15 is a control device.

The optical fiber element wire 2 has, for example, a glass fiber having a nominal outer diameter of 0.125 mm and a coating outer diameter of 0.15 mm.
It is a wire with a coating of about 25 mm. This strand coating is formed of one layer or two layers of an ultraviolet curing acrylate resin or the like, and is also colorless or colored.

A plurality of optical fiber strands 2 are connected to a supply drum 4
Are individually fed out from, the tension is adjusted by a dancer roller (not shown), and the lines are collected in parallel by the line collecting guide roller 5. In the example of FIG. 1, an example using four optical fiber strands 2 is shown, but other optical fiber strands such as two, eight, and twelve may be used. The concentrating guide roller 5 arranges a plurality of optical fiber core wires to some extent and sends the optical fiber to the concentrating guide 7.

The guide groove 7a of the line collecting guide 7 has a width of 1 from the width dimension in which a plurality of optical fiber element wires 2 are closely arranged in a line.
It is formed with a wide groove width of about / 100 mm to 5/100 mm. A large number of suction holes 7c are formed in the bottom wall 7b of the line collecting guide 7, and the suction pump 8 is connected to the lower surface side of the bottom wall 7b. In the guide groove 7a, the plurality of optical fiber wires 2 are arranged in parallel by the suction pump 8 so as to be in contact with the bottom wall 7b and in close contact with each other, and the optical fiber wires 2 vibrate in the guide groove. Prevent from doing.

As another example of the line collecting guide, a pair of line collecting rollers can be used as shown in FIG. In the figure, 17 and 18 are concentrating rollers, 17a and 18
a shows a guide groove. The concentrating rollers 17 and 18 have guide grooves 17a and 18a, and the groove widths of the guide grooves 17a and 18a are similar to those of the concentrating guide 7 in FIG. 1/100 from the width
Widely formed by about 5 mm to 5/100 mm.

The plurality of optical fiber strands 2 are connected to the concentrating roller 1.
7 and the concentrating roller 18 are stretched in opposite directions. Thereby, the plurality of optical fiber strands 2
Are pressed so as to contact the body surfaces of the guide grooves 17a and 18a, and are arranged in a row in close contact with each other to prevent the optical fiber element wires 2 from vibrating in the guide grooves 18a.
A function similar to that of the line collecting guide 7 in FIG. 1 can be provided. A liquid ejecting head 10 of a liquid ejecting marking device, which will be described below, is arranged on one of the line concentrating rollers 18 for supplying and applying an adhesive resin.

Returning to FIG. 1, a method of applying an adhesive resin for tape-forming a plurality of optical fiber strands 2 will be described. The adhesive resin is sprayed by ejecting a granular liquid (adhesive resin) from the liquid ejecting head 10, and the ejected adhesive resin collides with the optical fiber element wire and is applied. The application of the adhesive resin is performed by the liquid ejecting head 1 that ejects the adhesive resin.
0, and the liquid ejection control device 9 that controls on / off of the resin ejection from the ejection head. Hereinafter, the liquid jet control device 9 and the liquid jet head 10 are collectively referred to as a liquid jet marking device. An ink jet marking device is known as a concrete example of the liquid jet marking device. The liquid jet marking device applies the adhesive resin onto the optical fiber wires 2 arranged in close contact with each other by the concentrating guide 7 by spraying the adhesive resin. The application position is controlled with high accuracy and the optical fiber elements are formed in a desired pattern. A resin can be applied on the line 2.

A traveling speed signal of the optical fiber ribbon 1 which will be described later is input to the control section of the liquid jet marking device by the control device 15 to control the on / off time and timing of resin coating according to the traveling speed signal. I can do it. As a result, even when the running speed of the optical fiber ribbon 1 changes midway, the coating length and the like on the optical fiber strand can be made constant.

Further, in the liquid jet marking device itself, there is a limit to the speed at which the resin is blown. Therefore, a plurality of liquid jet marking devices or liquid jet heads 10 are arranged at different positions in the traveling direction of the optical fiber element wire 2,
The on / off control of resin application should be linked. The application of the adhesive resin can be speeded up by causing the plurality of liquid jet marking devices to alternately apply the resin. Furthermore, when the manufacturing apparatus is operated continuously for a long time, by alternately operating a plurality of liquid jet marking devices to perform resin replenishment,
Continuous production is possible and productivity can be improved.

As shown in FIG. 1C, when the distance d between the tip of the liquid jet head 10 and the coating surface is large, the precision of the resin coating amount and the coating position decreases, so the liquid jet head 1
The distance d between the tip of 0 and the coating surface is preferably set to 10 mm or less. The same applies to the example shown in FIG.

As the adhesive resin for bonding and integrating a plurality of optical fiber element wires 2, it is preferable to use a resin which is cured by irradiation with energy rays such as ultraviolet rays, radiation and electron rays. By using the energy ray curable resin, the optical fiber element wires can be bonded and integrated at high speed with a small amount of resin. Also,
By bonding with a small amount of resin, it becomes easy to separate the optical fiber strand into a single core.

As the energy ray-curable resin, an ultraviolet ray-curable resin or an electron ray-curable resin is particularly preferable, and an oligomer and a monomer are combined and various additives are added thereto. The radical polymerization type of the oligomer includes unsaturated polyester, urethane acrylate, polyester acrylate, epoxy acrylate, ester, ether acrylate and amino acid acrylate. A typical example of the cationic polymerization type is an alicyclic epoxy compound.

Further, in order to charge these resins,
A compound having an ionic bond or an inorganic filler is added.
Nonionic compounds include polymers having polyether groups, such as polyethylene glycol and its derivatives, and ionic compounds such as cationic and anionic compounds. If it is cationic, it may be polyvinylbenzyltrimethylammonium chloride, polymeditylaminoethyl (meth) acrylate quaternized product, polydiallyldimethylammonium chloride, etc., and if it is anionic, it may be sodium polystyrene sulfonate, soda salt, ammonium salt or the like.

An energy ray irradiation device 11 for curing the applied adhesive resin is provided at the subsequent stage of the liquid jet marking device. The adhesive resin 3 applied by the liquid jet marking device with the line guide 7 is the energy beam irradiation device 1.
1 is irradiated with a predetermined dose and cured, and the plurality of optical fiber strands 2 are bonded and integrated to form an optical fiber ribbon 1.
It is said that

The optical fiber ribbon 1 is taken up by the capstan roller 13 via the guide roller 12, the tension is adjusted by the dancer roller (not shown), and is taken up by the take-up drum 14. Capstan roller 1
The rotation speed of the optical fiber tape 3 is controlled by the control device 15 to adjust the running speed of the optical fiber ribbon 1. The rotation speed of the capstan roller 13 can be used as the traveling speed signal of the optical fiber strand 2 described above.

FIG. 3 is a diagram showing various forms of application of the adhesive resin according to the present invention. FIG. 3 (A) shows an example of continuously applying to the close contact portion between the optical fiber strands, and FIG.
FIG. 4 is a diagram showing an example of intermittently applying to a close portion between optical fiber strands. FIG. 3 (C) shows an example in which coating is continuously applied to the entire array plane of a plurality of optical fiber strands, and FIG.
FIG. 3 is a diagram showing an example in which application is intermittently performed on the entire array plane of a plurality of optical fiber strands. FIG. 3 (E) is a diagram showing an example of intermittent application on both surfaces of the array plane of a plurality of optical fiber element wires. Since the same reference numerals as those used in FIG. 1 are used for the reference numerals in the figure, the description thereof will be omitted.

The resin ejected from the liquid ejecting head of the liquid ejecting marking device is one dot (one drip)
The term “continuously” used in the following description means that dots are continuous in a dotted line in the longitudinal direction of the optical fiber strand. Intermittently is used to mean that dots that are continuously applied in a dotted line form are omitted by a predetermined distance.

As shown in FIG. 3A, in the case of continuously applying to the close contact portions 2a between the optical fiber strands 2, a plurality of dots (in the example shown in the figure) that match the array pitch of the optical fiber strands are used. At least one liquid jet marking device having a liquid jet head capable of forming three dots) is used.
The adhesive resin 3 is continuously applied to the close contact portion 2a between the optical fiber strands 2, and the adjacent optical fiber strands 2 are bonded and integrated to form the optical fiber ribbon 1.

As shown in FIG. 3B, when intermittently applying to the close portion 2a between the optical fiber strands 2,
The same liquid jet marking device as in the case of (A) is used. The adhesive resin 3 is intermittently applied to the close contact portion 2a between the optical fiber element wires 2 with a predetermined dot length, and the adjacent optical fiber element wires 2 are adhesively integrated with each other to form the optical fiber tape core wire 1. .

As shown in FIG. 3 (C), when applying so as to cover the entire array plane of the plurality of optical fiber element wires 2 with one dot, the diameter of the liquid ejecting head of the liquid ejecting marking device is made large, Also, the setting of the resin injection amount is adjusted. At least one plane of the optical fiber strand 2 is continuously bonded and integrated with an adhesive resin 3 of a larger dot to form an optical fiber ribbon 1. In this case, at least one liquid jet marking device may be used, but by arranging a plurality of liquid jet marking devices in the longitudinal direction of the optical fiber element wire 2 and alternately switching between them, application can be performed at high speed. Further, even when there is resin replenishment or the like, it can be continuously used for a long time. It should be noted that a plurality of liquid jet marking devices may be arranged also in the coating forms of FIGS. 3 (A), 3 (B) and 3 (D).

As shown in FIG. 3D, in the case of intermittent application on the entire array plane of a plurality of optical fiber element wires 2,
As in the case of (C), a liquid jet marking device having a larger liquid jet head diameter is used. The optical fiber strands 2 are bonded and integrated with an adhesive resin 3 which is intermittently applied with a predetermined dot length on at least one plane to form an optical fiber tape core wire 1.

As shown in FIG. 3 (E), when applying on both sides of the array plane of the optical fiber strands, at least one on each side so that it is applied from both sides by the liquid jet head of the liquid jet marking device. So, prepare 2 units in total. Figure 3
In (E), as shown in FIG. 3 (B), in the close contact portion 2a between the optical fiber strands 2, the adhesive resin 3 is intermittently applied to one flat surface side, and the adhesive resin 3 is bonded to the other opposite flat surface side. Resin 3'is applied intermittently. Further, the adhesive resins 3 and 3 ′ are applied so that the application positions are staggered and bonded together to form the optical fiber ribbon 1.

FIG. 4 is a sectional view showing an example of various application forms of the adhesive resin for the optical fiber ribbon. FIG. 4 (A) shows an example in which a plurality of optical fiber element wires are applied relatively thickly over the entire arrangement plane, and FIG. 4 (B) shows a state in which the arrangement surface is in contact with the outer surfaces of the plurality of optical fiber element wires. FIG. 4 (C) is a diagram showing an example of applying so as not to project from the array plane in contact with the outer surfaces of the plurality of optical fiber element wires. Since the same reference numerals as those used in FIG. 3 are used for the reference numerals in the figure, the description will be omitted.

FIG. 4 (A) is shown in FIG. 3 (C) or FIG.
The adhesive resin 3 is applied in the form of (D), and the adhesiveness of the optical fiber element wire 2 is relatively strong, but the adhesive resin 3 slightly protrudes from the array plane, and thus the optical fiber tape is accordingly increased. The thickness dimension as the core wire 1 becomes large.

In FIG. 4B, the adhesive resin 3 is applied to the gap between the adjacent optical fiber strands 2 in a slidable state. Since the adhesive resin 3 has an adhesive surface similar to that of FIG. 4A, the adhesiveness is relatively strong, and since it does not protrude from the array plane of the optical fiber element wires 2, the thickness dimension should also be minimized. You can However, it is necessary to accurately control the application amount of the adhesive resin 3, and therefore the application rate of the adhesive resin cannot be increased so much.

In FIG. 4 (C), the adhesive resin 3 partially fills the valley bottoms of the gaps between the adjacent optical fiber strands 2 to integrally bond them, so that the optical fiber strands 2 are arranged in an array plane. It does not protrude, the thickness dimension can be minimized, and the single-core separability is excellent. Further, it is possible to apply the adhesive resin 3 without reducing the application speed. However, although the adhesiveness is slightly weaker than the other examples, there is no particular problem when used in the state of being housed in the optical cable.

Next, an example of the above-described embodiment of the present invention will be described with reference to FIG. (Example 1) Four optical fiber strands 2 having a coating outer diameter of 0.25 mm are supplied from a supply drum 4 and guided to a line guide 7 via a line guide roller 5. The width of the guide groove 7a of the line collecting guide 7 was set to 1.03 mm, and the optical fiber wire 2 was attracted to the guide bottom wall 7b by the suction pump 8 to prevent vibration.

One liquid jet marking device is prepared, and the liquid jet head 10 is installed in the guide groove 7a of the line guide 7.
Placed opposite to. Further, the distance d between the tip of the liquid jet head and the array plane of the optical fiber element wires 2 is set to 3.0 mm. As the adhesive resin 3 to be applied, an ultraviolet curable resin to which an ionic inorganic filler was added was used.

The optical fiber strand 2 is drawn at a linear velocity of 300 m / min.
The optical fiber ribbon 1 of the coating form shown in FIGS. 3 (A) and 4 (C) was manufactured. The optical fiber tape produced was rewound with a separately prepared facility at a tension of 100 g and a linear velocity of 500 m / min.
The optical fiber strands did not fall apart, and the taped state could be maintained. On the other hand, when the optical fiber ribbon was picked up with a finger and pulled in the width direction, the optical fiber strands could be separated.

(Embodiment 2) With the apparatus having the same settings as in Embodiment 1, the linear velocity of the optical fiber element wire 2 is 30 m / min → 300.
The fiber was gradually raised to m / min to run, and the optical fiber ribbon 1 of the intermittent coating form shown in FIGS. 3 (B) and 4 (C) was manufactured. A traveling speed signal was given to the control unit of the liquid jet marking device, and the control units of the liquid jet marking devices were also interlocked with each other. Adhesive resin 3 applied length L1 is 10 mm, non-applied length L2 is 10 mm
Therefore, at the linear velocity of 30 m / min, 0.02se
c, 0.006 sec at a linear velocity of 100 m / min, 0.003 sec at a linear velocity of 200 / min, a linear velocity of 300
At m / min, the resin injection was turned on / off by continuously changing the time to 0.002 sec.

The optical fiber ribbon produced by the above method was rewound by a separately prepared facility in the same manner as in Example 1 at a tension of 100 g and a linear velocity of 500 m / min.
The optical fiber strands did not fall apart, and the taped state could be maintained. On the other hand, when a portion of the optical fiber ribbon which was not coated with resin was pinched with a finger and pulled in the width direction, the optical fiber strands could be separated.

(Embodiment 3) Two liquid jet marking devices were prepared with the same settings as those of the first embodiment, and the liquid jet heads 10 were arranged so as to face the guide grooves 7a of the line guide 7. Optical fiber strand has a linear velocity of 600 m / min
I made it run. Adhesive resin was intermittently applied to each of the two liquid jet marking devices in the forms shown in FIGS. 3 (B) and 4 (C), and the timing of turning on / off the resin was shifted by 0.002 sec. As a result, the linear velocity is 600m
The optical fiber ribbons could be obtained in the continuous coating form of FIG.

The optical fiber tape core wire manufactured by the above method was rewound with a separately prepared facility at a tension of 100 g and a linear velocity of 500 m / min, as in Example 1.
The optical fiber strands did not fall apart, and the taped state could be maintained. On the other hand, when the optical fiber ribbon was picked up with a finger and pulled in the width direction, the optical fiber strands could be separated.

(Embodiment 4) With the same settings as in Embodiment 1, one liquid jet marking device is used, the liquid jet head diameter is increased, and the resin jet settings are adjusted to provide four liquid jet marking devices arranged in parallel. One dot was applied to the entire optical fiber element wire 2. Optical fiber strand 2 with a linear velocity of 300
3 (C) and FIG. 4 (A) by running at m / min
The coated optical fiber ribbon 1 was manufactured.
The produced optical fiber tape core wire was tensioned at 100 g and a linear velocity of 500 m / m by using separately prepared equipment as in the case of Example 1.
After rewinding at min, the optical fiber element wires did not fall apart and the taped state could be maintained. On the other hand, when the optical fiber ribbon was picked up with a finger and pulled in the width direction, the optical fiber strands could be separated.

(Embodiment 5) With the same equipment as in Embodiment 4, the linear velocity of the optical fiber element wire 2 is changed from 30 m / min to 300.
The optical fiber tape core wire 1 in the intermittent coating form shown in FIG. 3 (D) and FIG. 4 (A) was manufactured by gradually raising the speed to m / min and running. A traveling speed signal was given from the control device 15 to the control unit of the liquid jet marking device. The length of adhesive resin 3 applied is 10 mm, and the length not applied is 1
In order to make it 0 mm, it is 0.0 when the linear velocity is 30 m / min.
When the linear velocity is 100 m / min for 2 seconds, 0.006se
c, when the linear velocity was 200 / min, the time was 0.003 sec, and when the linear velocity was 300 m / min, the time was continuously changed to 0.002 sec, and the resin injection was turned on / off.

The optical fiber tape core wire produced by the above method was rewound by a separately prepared facility in the same manner as in Example 1 at a tension of 100 g and a linear velocity of 500 m / min.
The optical fiber strands did not fall apart, and the taped state could be maintained. On the other hand, when a portion of the optical fiber ribbon which was not coated with resin was pinched with a finger and pulled in the width direction, the optical fiber strands could be separated.

[0046]

As is apparent from the above description, according to the present invention, the adhesive resin applied to the array plane can be controlled with high accuracy when a plurality of optical fiber element wires are arranged in a row to form a tape. can do. As a result, it is possible to manufacture a thin optical fiber ribbon having a minimum outer dimension and easy single core separation.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an embodiment of the present invention.

FIG. 2 is a diagram showing another example of a line collecting guide.

FIG. 3 is a diagram showing various application forms of an adhesive resin according to the present invention.

FIG. 4 is a cross-sectional view of various application forms of an adhesive resin according to the present invention.

[Explanation of symbols]

1 ... Optical fiber tape core wire, 2 ... Optical fiber element wire, 2a
... close contact part, 3, 3 '... adhesive resin, 4 ... supply drum, 5
... Concentration guide roller, 7 ... Concentration guide, 7a ... Guide groove, 7b ... Bottom wall, 7c ... Suction hole, 8 ... Suction pump, 9 ...
Liquid ejection control device, 10 ... Liquid ejection head, 11 ... Energy ray irradiation device, 12 ... Guide roller, 13 ... Capstan roller, 14 ... Winding drum, 15 ... Control device,
17, 18 ... Concentrating rollers, 17a, 18a ... Guide grooves.

Claims (12)

[Claims] 1. A method for manufacturing an optical fiber ribbon, wherein a plurality of optical fiber wires are closely arranged while running and arranged in a line, and an adhesive resin is applied to integrate them into a tape shape. An energy ray curable resin is jetted and applied by a liquid jet head to at least one array plane side of the optical fiber strands, and then the energy ray curable resin is cured to form the plurality of optical fiber strands. A method for manufacturing an optical fiber ribbon, which comprises integrally bonding. 2. The on / off of resin jetting by the liquid jet head is controlled according to the traveling speed of the optical fiber strand to make the coating length and the coating interval in the longitudinal direction of the optical fiber strand constant. The method for producing an optical fiber ribbon according to claim 1, wherein 3. The liquid ejecting head according to claim 1, wherein a plurality of the liquid ejecting heads are arranged at different positions in the traveling direction of the optical fiber wire to control ON / OFF of resin ejection. Manufacturing method of optical fiber ribbon. 4. The gap between the tip surface of the liquid jet head and the array plane in contact with the outer surface of the optical fiber element wire is 10 m.
The method for manufacturing an optical fiber ribbon according to any one of claims 1 to 3, characterized in that the length is set to m or less. 5. The optical fiber tape core wire according to claim 1, wherein an ultraviolet ray curable resin or an electron beam curable resin is used as the energy ray curable resin. Method. 6. The optical fiber ribbon according to claim 1, wherein the energy ray curable resin contains a compound having an ionic bond or an inorganic filler. Production method. 7. The optical fiber tape core wire according to claim 1, wherein the energy ray-curable resin is continuously applied in a longitudinal direction of the optical fiber element wire. Manufacturing method. 8. The optical fiber ribbon according to claim 1, wherein the energy ray curable resin is applied intermittently in a longitudinal direction of the optical fiber strand. Manufacturing method. 9. The method of manufacturing an optical fiber ribbon according to claim 7, wherein the energy ray curable resin is applied between the adjacent optical fiber strands. 10. The energy ray-curable resin is applied so as not to project from an array plane that is in contact with the outer surfaces of the plurality of optical fiber strands. Manufacturing method of optical fiber tape core wire. 11. A manufacturing apparatus of an optical fiber ribbon, wherein a plurality of optical fiber strands are closely aligned while running and arranged in a line, and an adhesive resin is applied to integrate them into a tape shape. A liquid ejecting head for applying an energy ray-curable resin to at least one array plane side of optical fiber strands, and turning on / off of resin ejecting of the liquid ejecting head
An apparatus for manufacturing an optical fiber ribbon, comprising a liquid ejection control device for controlling off and an energy beam irradiation device for curing the energy beam curable resin. 12. A control device for detecting a traveling speed of the optical fiber ribbon and controlling ON / OFF of resin injection by the liquid ejecting head according to the traveling speed. 11. An apparatus for manufacturing an optical fiber ribbon according to item 11.