JP2001307321A - Method and device for manufacturing recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for manufacturing a recording medium, in which a wide variety of recording media can be wound stably regardless of various kinds of the recording media. SOLUTION: In this device 1 for manufacturing the recording medium, the recording medium 10 is wound around a winding roll 2 while the medium 10 is pressed against the roll 2 by plural touch rolls 4, 6.

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 a recording medium suitable for use in a process for manufacturing a recording medium in the form of a sheet such as a magnetic tape, particularly as a winding device for a recording medium.

[0002]

2. Description of the Related Art In a manufacturing process of a magnetic recording medium, a predetermined surface treatment is applied to a magnetic tape obtained, including a process of coating various functional films such as a magnetic layer and a protective film on a non-magnetic support. Winding the tape onto a winding roll having a predetermined diameter, such as a step of cutting the magnetic tape into a fixed width or length, or a step of re-winding the once wound tape. Is being done.

Conventionally, when such a work for winding a magnetic tape is performed, a winding device 21 as shown in FIG.
Is used. In this winding device 21,
A long magnetic tape 30 as a wound body is sequentially wound on a cylindrical surface of a cylindrical winding roll 22 that is driven to rotate counterclockwise in the figure by a motor or the like (not shown). ing.

[0004] Further, a touch roll 24 for pressing against a roll 23 of a magnetic tape 30 as a wound body.
Is provided on the right side of the roll 23. The touch roll 24 is pressed against the surface of the magnetic tape 30 taken up by the take-up roll 22 with a predetermined pressure in a vertical direction, so that the winding can be smoothly carried out without causing wrinkles and winding deviation. It is made to take place.

[0005] In such a winding device 21, the pressure of the contact of the touch roll 24 (hereinafter referred to as touch pressure).
Is the cylinder 15 attached to the touch roll 24
Is controlled by changing the internal pressure.

[0006]

By the way, the hardness and material of the conventional touch roll 24 are kept constant regardless of the material of the magnetic tape 30 and the type of product.

As a result, depending on the material and the type of the magnetic tape 30, the hardness and the material of the touch roll 24 become inappropriate, and the following problems may occur, so that the winding may not be performed in a good condition. is there.

For example, if the hardness of the touch roll 24 is too hard or the touch pressure is excessive than an appropriate pressure,
The touch roll 24 may cause a slip or the like while the magnetic tape 30 is running, and the magnetic tape 30 may be wrinkled.

Further, for example, when the tension of the magnetic tape 30 is low, the magnetic tape 30 is wound while being shifted in the axial direction.
A so-called "winding deviation" may occur.

On the other hand, if the hardness of the touch roll 24 is too soft, the touch roll 24 loses the tension of the magnetic tape 30. For example, even if the magnetic tape 30 has an uneven shape in the width direction, it is wound as it is. I will be lost.

Due to the above-described phenomenon, the shape of the roll 23 is deteriorated, and the amount of air mixed into each layer of the magnetic tape 30 in the roll 23 wound around the take-up roll 22 may not be constant.

As described above, if the amount of air mixed is not constant,
At the initial stage of winding, that is, inside the roll 23, and at the end of winding, that is, outside the roll 23, the hardness of the roll 23 is not kept constant and changes. When the hardness of the roll 23 is not constant, the magnetic tape 30 wound as the roll 23 moves when, for example, a hardening process is performed later, so that a so-called “tightening of the winding” may occur. Unnecessary force is applied to a part of 30 and the magnetic layer may be rubbed to deteriorate magnetic properties and the like.

When the above-described problem occurs, the shape of the roll 23 deteriorates, so that it is difficult to stably wind the magnetic tape 30. Further, when the sheet-shaped magnetic tape 30 is cut into an elongated shape to obtain a product magnetic tape 30, the magnetic properties deteriorate and the number of defective products increases, so the yield of the magnetic tape 30 in the roll 23 increases. Will decrease.

On the other hand, when winding a magnetic tape using a winding device, the magnetic tape is wound while applying an appropriate tension (so-called winding tension) to the magnetic tape. If the tension applied to the magnetic tape is too large, the magnetic tape may be undesirably elongated. In recent years, thinner magnetic tapes for long-time recording have been developed.
If the winding tension is reduced along with the thinning of the magnetic tape, winding deviation occurs due to mixing of air generated from loosening of the wound magnetic tape, making it difficult to perform stable winding. . Current thin magnetic tapes have a film thickness of about 3 μm, for example, a winding tension of about 50 N for a 24-inch wide tape. However, when the film thickness is further reduced, the winding tension is too strong, causing trouble.

In order to solve the above-mentioned problem, the present invention provides a method and an apparatus for manufacturing a recording medium capable of winding up the recording medium stably irrespective of various types of recording medium. is there.

[0016]

According to the present invention, there is provided an apparatus for producing a recording medium, wherein the recording medium is wound on a winding roll while being pressed by a touch roll, and a plurality of touch rolls are provided.

According to the configuration of the present invention described above, the recording medium is pressed by a plurality of touch rolls, and the state of the amount of air entering the recording medium during winding can be controlled by each touch roll. It becomes possible to adjust the winding state of the medium to a favorable state.

According to the method of manufacturing a recording medium of the present invention, the winding roll is driven by a torque control system to control the winding tension of the recording medium, and the recording medium is wound around the winding roll while being pressed by a plurality of touch rolls. To take.

According to the method of the present invention described above, the torque of the take-up roll is controlled, so that the fluctuation of the take-up tension is reduced, and the recording medium is pressed and wound by a plurality of touch rolls. The state of the amount of air entering the recording medium can be controlled by each touch roll. Therefore, it is possible to wind the recording medium in a good state even with a low winding tension.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is an apparatus for manufacturing a recording medium provided with a plurality of touch rolls, the recording medium being wound on a take-up roll while being pressed by a touch roll.

According to the present invention, in the above-described apparatus for manufacturing a recording medium, a plurality of touch rolls are provided at positions symmetrical to the axis of the take-up roll.

Further, according to the present invention, in the above-described apparatus for manufacturing a recording medium, the pressure of the touch roll is set within a range of 0 to 500 N.

Further, according to the present invention, in the above-mentioned recording medium manufacturing apparatus, the hardness of the touch roll is set within a range of 30 ° to 70 °.

Further, according to the present invention, in the above-described recording medium manufacturing apparatus, the material of the touch roll is a rubber material.

Further, according to the present invention, in the above-mentioned recording medium manufacturing apparatus, the pressure of the touch roll on the winding start side is
The pressure of the touch rolls thereafter is set to be equal or greater.

According to the present invention, in the above-described apparatus for manufacturing a recording medium, the take-up roll is driven by a torque control method,
The winding tension of the recording medium is controlled. In this case, the winding tension of the recording medium may be set to 30N or less, and may be set to 20N or less.

According to the method of manufacturing a recording medium of the present invention, the winding roll is driven by a torque control system to control the winding tension of the recording medium, and the recording medium is wound around the winding roll while being pressed by a plurality of touch rolls. To take.

FIG. 1 is a schematic configuration diagram of an embodiment of a recording medium manufacturing apparatus according to the present invention. This embodiment is a case where the manufacturing apparatus of the present invention is applied to a step of rewinding a magnetic recording medium.

The recording medium manufacturing apparatus 1 is, like the winding apparatus 21 shown in FIG. 7, a cylindrical winding roll 2 driven to rotate counterclockwise in the figure by a motor (not shown) or the like. A long recording medium 10 is sequentially wound as a wound body on the cylindrical surface. In the figure, reference numeral 3 denotes a roll 3 on which the recording medium 10 is wound.
Is shown.

In the present embodiment, particularly, the touch roll
The manufacturing apparatus 1 is configured by providing two first touch rolls 4 and a second touch roll 6. The first touch roll 4 provided on the right side of the roll 3 of the recording medium (rolled body) 10 wound on the take-up roll 2 changes the internal pressure of the cylinder 5 attached to the first touch roll 4. Is controlled by The second touch roll 6 provided on the left side of the roll 3 of the recording medium is controlled by changing the internal pressure of a cylinder 7 attached to the second touch roll 6. These two touch rolls 4, 6 are provided at an interval of about 180 ° around the winding roll 2, that is, at positions symmetrical to each other with respect to the axis of the winding roll 2.

Due to the pressure of the first touch roll 4 on the winding start side, the recording medium 10 is applied to the winding roll 2 for the first rotation.
The second and subsequent rounds are pressed against the roll 3 of the recording medium 10 already wound. Then, after the rotation of about 180 °, the second touch roll 6 is pressed again against the take-up roll 2 or the roll 3 of the recording medium 10 already wound.

The pressure of the first touch roll 4 and the pressure of the second touch roll 6 (hereinafter referred to as touch pressure) are both 0 to 500N.
Within the range. More preferably, the touch pressure is 200 to 4
00N.

The touch pressure of 0 means that the pressure of the touch rolls 4, 6 applied to the roll 3 of the recording medium 10 is not horizontal, and the cylinder 5, 5 7 corresponds to a state of contacting the recording medium 10 without using the internal pressure.

If the touch pressure exceeds 500 N, the air between the wound recording media 10 escapes more than necessary, which is not preferable.

The hardness of the touch rolls 4 and 6 is 30
Within the range of {70}. If the hardness of the touch rolls 4 and 6 is less than 30 °, the touch rolls 4 and 6 follow the cross-sectional shape of the recording medium 10, and there is no gap for air to enter, and the amount of air decreases. If the hardness of the touch rolls 4 and 6 exceeds 70 °, air is entrapped and the shape of the rolls 3 becomes uneven, which is not preferable.

As the material of the touch rolls 4 and 6, it is preferable to use a rubber material such as Grandpole (trade name) or NBR (acrylonitrile butadiene rubber).

The diameter of the touch rolls 4 and 6 depends on the size of the roll 3 of the recording medium (rolled body) to be produced.
It is preferable to be within the range of 00 mm.

With the provision of the two touch rolls 4 and 6, the state of mixing of the air into the roll 3 is first adjusted by the first touch roll 4 on the winding start side, and further the second touch roll 4 on the opposite side is adjusted.
It can be adjusted again by the touch roll 6. Thereby, the mixing of the air into the roll 3 can be made uniform, and wrinkles and winding deviation in winding can be prevented. That is, the state of the roll 3 around which the recording medium 10 is wound can be controlled more effectively than in the case where only one touch roll 24 shown in FIG. 7 is used.

Further, according to the type of the recording medium 10,
The manufacturing apparatus 1 is configured by appropriately changing each condition of the touch pressure, hardness, and material of the two touch rolls 4 and 6, and selecting more appropriate conditions. Accordingly, the amount of air mixed into the roll 3 of the recording medium can be adjusted in accordance with the type of the recording medium 10, so that stable winding can be performed without being restricted to the recording medium 10 of various types. .

It is preferable that the pressure P2 of the second touch roll 6 is equal to or higher than the pressure P1 of the first touch roll 4 on the winding start side, that is, P1 ≦ P2.

Here, FIG. 2 shows a change in hardness of the roll 3 of the recording medium (rolled body) with an increase in the winding length in the manufacturing apparatus 1 of the present embodiment. Also, as a comparison,
Winding device 21 provided with one touch roll 24
FIG. 8 shows a change in the hardness of the roll 23 of the recording medium in the case of (1). The hardness was measured by a hardness tester (rubber hardness tester).

In each figure, the horizontal axis represents the width direction of the recording medium (magnetic tape), the vertical axis represents the hardness of the obtained roll, and the winding length is increased from 1000 m.
The distribution of the hardness of the roll at each winding length at a predetermined position in the width direction is measured at several locations in 50 channels CH (= each of which becomes a recording track after cutting).

In the case of FIG. 2, the measurement is performed on a roll of a magnetic tape having a length of 7400 m, and the measured values at the lengths of 1000 m, 4000 m and 7000 m from the inside to the outside of the roll are shown. In the case of FIG.
m of the magnetic tape roll, and measured from the inside to the outside of the roll to 1000 m, 4000 m, 7000 m,
Shown are measurements at a length of 10,000 m.

As shown in FIG. 2, when two touch rolls 4 and 6 are provided, regardless of the winding length, the roll 3
It can be seen that the hardness is almost constant and the variation in the hardness in the width direction is very small. Viewing this with a single roll 3 indicates that the hardness does not change between the inside and outside of the winding.

On the other hand, from FIG. 8, when the number of touch rolls is one, the variation in the width direction of the hardness of the roll 13 is small while the winding length is short, but the hardness decreases as the winding length increases. Variation in the width direction increases. Viewing this with a single roll 23 indicates that the hardness changes between the inside and outside of the winding.

That is, by providing a plurality of touch rolls 4 and 6 as in the present embodiment, it is understood that there is no change in the hardness of the roll 3 or variation in the width direction, and the winding can be performed in a good state. .

Also, the first and second touch rolls 4 and 6
FIG. 3 shows the relationship between the touch pressures P1 and P2 and the hardness of the roll 3 of the recording medium (rolled body).

From FIG. 3, it can be seen that the hardness of the rolls 3 of the recording medium in the first to fourth rolls where P1 ≦ P2 is almost the same, and that the hardness in the width direction is small.
On the other hand, in the case of P5> P2 where P1> P2, the hardness of the roll 3 of the recording medium is small, and the variation in the hardness in the width direction is large. This means that if the touch pressure P2 of the second touch roll is smaller,
Adjusting the entrained state of air by providing this,
It is considered that the effect of this is weakened.

According to the above-described embodiment, the provision of the two touch rolls 4 and 6 makes it possible to uniformly adjust the incorporation of air into the roll 3 around which the recording medium 10 is wound. It is possible to prevent occurrence of wrinkles and winding deviation in taking.

As a result, stable winding can be performed regardless of the material of the recording medium 10 and the type of product. Therefore, the recording medium 10 can be manufactured by obtaining the roll 3 of the recording medium 10 in a good state.

In the above embodiment, two touch rolls 4 and 6 are provided, but three or more touch rolls may be provided. Also in this case, it is preferable that the pressure of the subsequent touch rolls is equal to or greater than the pressure of the first touch roll on the winding start side.

FIG. 4 is a schematic diagram of another embodiment of the recording medium manufacturing apparatus of the present invention. This manufacturing apparatus is applied to carry out the method for manufacturing a recording medium of the present invention. This embodiment is a case where the present invention is applied to a step of rewinding a magnetic recording medium as described above.

The recording medium manufacturing apparatus 11 includes a cylindrical take-up roll 13 that is driven to rotate clockwise in the figure by a drive source such as a motor, in this example, a motor 12.
A long recording medium 10 as a wound body is sequentially wound around the cylindrical surface of the recording medium. 3 is a recording medium 1
0 indicates the roll wound up. While the recording medium 10 is being transported, a guide roller 14 for guiding the recording medium is arranged, and a tension adjusting means 15 for eliminating the slack of the recording medium 10 is arranged.

In the present embodiment, in particular, the winding roll 1
3 is configured to be driven by a torque control method, and the fluctuation of the tension (so-called winding tension) at the time of winding the recording medium 10, that is, the fluctuation of the tension at the winding start portion M on the winding roll 10 is suppressed. The recording medium 10 is always kept at a substantially constant tension.
To take up. For this reason, a tension setting means (for example, a tension setting device) 17 and a torque command means (for example, a torque command) for taking in the set value set by the tension setting means 17 and instructing the motor 12 of the torque of the motor 12 corresponding to the set tension. Circuit 18 is provided. Tension setting means 1
At 7, the tension of the recording medium 10 to be wound is set, and the driving of the motor 12 is controlled via the torque command means 18 so as to obtain a torque corresponding to the set value.

Further, as shown in FIG. 1, a plurality of touch rolls,
The touch roll 4 and the second touch roll 6 are provided. The first touch roll 4 is controlled by changing the internal pressure of the cylinder 5, and the second touch roll 6 is controlled by changing the internal pressure of the cylinder 7. 2
The book touch rolls 4 and 6 are wound together with a take-up roll 13.
At an interval of about 180 °, ie, the take-up roll 13
Are provided at positions symmetrical to each other. The touch pressure, hardness, diameter, etc. of the touch rolls 4 and 6 are the same as described above.

Here, the winding control method of the recording medium 10 includes torque control and speed control. As shown in FIG. 5, the speed control is a control for keeping the speed V of the transfer of the recording medium 10 constant, so that the torque T of the winding roll 13 fluctuates. As shown in FIG. 6, the torque control is a control for keeping the rotation torque T of the take-up roll 13 constant, so that the speed V of the transfer of the recording medium 10 fluctuates, but the tension fluctuation of the recording medium 10 is reduced. Is done. Therefore, the recording medium 1
As a winding control method for a recording medium 0, particularly a thin recording medium, torque control is suitable for suppressing a tension fluctuation at a winding start portion M of the recording medium 10.

In the present embodiment, when the recording medium 10 is wound on the winding roll 13, the winding tension is set by the tension setting means 17, and the motor 12 is controlled by a command from the torque command means 18 in accordance with the set value. Is set. As a result, the motor 12 is driven to rotate by the set torque, the fluctuation of the tension of the recording medium 10 is suppressed, and the recording medium 10 is wound around the winding roll 13 with the set constant tension. At the same time, the mixing of air into the recording medium 10 wound on the winding roll 13 can be adjusted by the two touch rolls 4 and 6 as described above. In the tension adjusting means 15, the same tension as the set tension is applied. Accordingly, even when the winding tension of the recording medium 10 is set to a low tension for the purpose of reducing the stress on the recording medium 10, the intrusion of air into the recording medium 10 is suppressed, and the winding deviation due to the loosening caused by the low tension is prevented. Prevent,
Stable winding can be performed.

According to the present embodiment, the winding roll 1
The recording medium 10 can be stably wound at a low tension, for example, 30 N or less, and more preferably 20 N or less by using the plurality of touch rolls together with the driving of the recording medium 10 by the torque control method.

(Example) [Example 1] Next, the recording medium 10 was actually manufactured by using the manufacturing apparatus 1 shown in Fig. 1, and the roll 3 of the obtained recording medium (rolled body) was formed. The shape was evaluated.

(Construction of Recording Medium Manufacturing Apparatus) The conditions of the material, hardness and touch pressure of the two touch rolls 4 and 6 were changed as follows, and the recording medium manufacturing apparatus 1 was constructed and tested. 1 to Test 11. Test 1: The hardness of the first touch roll 4 was set to 50 °, and the touch pressure P1 was set to 200N. The hardness of the second touch roll 6 was 30 °, and the touch pressure P2 was 200 N. Test 2: Touch pressure P2 of the second touch roll 6 is 300N
The other conditions were the same as in Test 1. Test 3 and Test 4: The hardness of the second touch roll 6 was set to 50 ° and 70 °, respectively, and the other conditions were the same as in Test 1. Test 5: The material of the second touch roll 6 was aluminum, and the other conditions were the same as in Test 1. Test 6 to Test 9: The hardness of both the first touch roll 4 and the second touch roll 6 is fixed at 50 °, and the touch pressures P1 and P2 of both are 400N, 300N, 200N, 10N.
0N. Test 10: first touch roll 4 and second touch roll 6
Was increased to 70 ° and the touch pressure was increased to 600N. Test 11: first touch roll 4 and second touch roll 6
Of the recording medium 1 with the hardness of
0 was contacted.

As the recording medium 10, V coated with a magnetic layer
Using a 10000 m jumbo roll for HS video tape, the HS video tape was sent to the recording medium manufacturing apparatus 1 while running at a speed of 250 m / min. Then, in the recording medium manufacturing apparatus 1, the recording medium 10 was wound around a take-up roll 2 to obtain a roll 3 of a recording medium (rolled body).

The state of the roll 3 of the obtained recording medium was evaluated. The results are shown in Table 1 together with each condition. Table 1
In the middle, the mark 非常 indicates a very good state, the mark ○ indicates a good state, the mark △ indicates a slightly good state, and the mark × indicates a bad state. Of these, the marks ◎ to △ are within the allowable range.

[0063]

[Table 1]

According to Table 1, the hardness of the second touch roll 6 was 5
It can be seen that Tests 3 and 8 with 0 ° gave particularly good results. In Test 10 in which the hardness and the touch pressure were increased, winding deviation and wrinkling did not occur, but unevenness was increased and the shape of the roll was not good. Also, from the results of Test 4, it can be seen that increasing the touch pressure affects the roll shape. In Test 5, in which an aluminum roll was used as the second touch roll 6, the occurrence of winding deviation and wrinkles was significant, and the roll could not be manufactured. [Embodiment 2] The roll shape of a recording medium (rolled body) 10 obtained by winding with a low tension using the apparatus 11 of FIG. 4 was evaluated. Table 2 shows the results. The total thickness of the magnetic tape used in the sample is 13 μm. Sample 1 was of the present invention wound up using the manufacturing apparatus 11 in FIG. 4, and Sample 2 was a conventional one wound up using the manufacturing apparatus 21 (the winding control in this case was speed control). belongs to. still,
In Table 2, the mark ◎ indicates that the yield was good and no winding deviation occurred, and the mark ○ indicates that the yield was good and the winding deviation did not occur. Indicates the status.

[0065]

[Table 2]

As shown in Table 2, when the manufacturing apparatus 11 of the present invention is used as shown in the sample 1, the tension is 50N, 30N, 20N.
It can be seen that the yield tends to improve in the order of, and that the magnetic tape can be satisfactorily wound up even with a tension of 20 N or less. In addition, it can be seen that the winding shape is deteriorated when the tension is less than 30 N in the conventional method.

In the above embodiment, the present invention is applied to the rewinding step, but the present invention can be applied to other uses. For example, a step of winding after applying a magnetic layer with a coater, a step of winding after forming a magnetic layer by vapor deposition, a step of winding after processing with a calender, a step of winding after cutting to a predetermined width, etc. It can be applied to various winding operations in the manufacturing process.

Further, the recording medium manufacturing apparatus of the present invention, ie, the winding apparatus provided with a plurality of touch rolls, can be used for printing,
The present invention can also be applied to a winding device for any wound body such as a film, papermaking, woven fabric, and adhesive tape. However, the above-mentioned problem when only one touch roll is used becomes apparent only when a recording layer is formed on a film-like support, such as a magnetic recording medium in which a magnetic layer is formed on a non-magnetic support. Since the recording medium is a medium or the like, the effect of the apparatus of the present invention is remarkable for such a recording medium.

The present invention is not limited to the above-described embodiment, and may take various other configurations without departing from the gist of the present invention.

[0070]

According to the present invention described above, by providing a plurality of touch rolls, air is uniformly mixed into the rolls of the recording medium that is to be wound, and wrinkles and winding deviations during winding are reduced. Generation can be prevented. Therefore, according to the present invention, it is possible to perform stable winding and manufacture a recording medium in a good condition, regardless of the material of the recording medium and the type of product.

According to the present invention, the take-up roll is driven by the torque control method and a plurality of touch rolls are combined to realize stable take-up of the recording medium with low tension. INDUSTRIAL APPLICABILITY The present invention is suitably applied to winding of a thin recording medium.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an apparatus for manufacturing a recording medium according to an embodiment of the present invention.

2 is a diagram showing a change in hardness of a roll of a recording medium (rolled body) with an increase in a winding length in the manufacturing apparatus of FIG. 1;

FIG. 3 is a diagram illustrating a relationship between a change in touch pressure of first and second touch rolls and a hardness of a roll of a recording medium in the manufacturing apparatus of FIG. 1;

FIG. 4 is a schematic configuration diagram of a recording medium manufacturing apparatus according to another embodiment of the present invention.

FIG. 5 is an explanation of speed control of a take-up roll.

FIG. 6 is an explanatory diagram of torque control of a take-up roll.

FIG. 7 is a schematic configuration diagram of a conventional magnetic recording medium winding device.

8 is a diagram showing a change in hardness of a roll of a recording medium (rolled body) with an increase in a winding length in the winding device in FIG. 7;

[Explanation of symbols]

1,11 ‥‥ recording medium manufacturing apparatus, 2,13 ‥‥ take-up roll, 3 ‥‥ recording medium roll, 4 ‥‥ first touch roll, 5,7 ‥‥ cylinder, 6 ‥‥ second touch roll , 10 ‥‥ recording medium, 12 ‥‥ motor, 14 ‥‥
Guide roller, 15 ° tension adjusting means, 17 ° tension setting means, 18 ° torque command means

Claims (8)

[Claims] 1. An apparatus for manufacturing a recording medium, wherein the recording medium is wound around a take-up roll while pressing the recording medium with the touch roll, wherein a plurality of the touch rolls are provided. 2. The recording medium manufacturing apparatus according to claim 1, wherein a plurality of the touch rolls are provided at positions symmetric with respect to an axis of the take-up roll. 3. The pressure of the touch roll is 0 to 500 N.
2. The apparatus for manufacturing a recording medium according to claim 1, wherein the recording medium is set within the range. 4. The touch roll has a hardness of 30 to 70.
2. The apparatus for manufacturing a recording medium according to claim 1, wherein the setting is within the range of ゜. 5. The recording medium manufacturing apparatus according to claim 1, wherein a material of the touch roll is a rubber material. 6. The apparatus for manufacturing a recording medium according to claim 1, wherein the pressure of the touch roll thereafter is equal to or greater than the pressure of the touch roll on the winding start side. . 7. The recording medium manufacturing apparatus according to claim 1, wherein the winding roll is driven by a torque control method to control a winding tension of the recording medium. 8. A take-up roll is driven by a torque control method to control a take-up tension of a recording medium, and the recording medium is taken up by the take-up roll while being pressed by a plurality of touch rolls. Manufacturing method of recording medium.