JP2010061773A - Apparatus and method for manufacturing magnetic tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a magnetic tape that reliability polishes the lateral edges of a tape body. <P>SOLUTION: A cleaning apparatus 4 (a magnetic tape manufacturing apparatus) includes an edge polishing section 12 for polishing the lateral edges of the running magnetic tape T (tape body) cut to a predetermined width in contact with a polishing plate 22 (polisher). The edge polishing section 12 includes a guide roller 21 (first supporting member) for supporting the magnetic tape T on its circumferential surface. The polishing plate 22 is disposed in contact with the lateral edge of the magnetic tape T supported by the guide roller 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a magnetic tape manufacturing apparatus and a magnetic tape manufacturing method for manufacturing a magnetic tape by polishing a tape body with an abrasive.

As this type of magnetic tape manufacturing apparatus, a manufacturing apparatus that manufactures a magnetic tape for a tape cassette by cutting a wide magnetic tape wound in a roll shape into a plurality of narrow magnetic tapes by a slitter (cutting device) Is disclosed in Japanese Patent No. 4003510. In this manufacturing apparatus, when a magnetic tape original fabric is cut by a slitter, protrusions (a magnetic layer formed on the surface side of the magnetic tape are protruded from the base tape at the time of cutting). A protrusion removing means for removing the portion). Specifically, the projection removing means includes a front projection removing means and a back projection removing means, and a configuration is adopted in which the projection is removed by the front projection removing means. Further, the protrusion removing means (surface protrusion removing means) includes a plurality of guide rollers and a rotating round blade that rotates around an axis provided substantially parallel to the traveling direction of the magnetic tape. In this protrusion removing means, in a state where the magnetic tape is stretched between the pair of guide rollers, the magnetic tape is run between the guide rollers while rotating the rotary round blade while the tape is running. It is made to contact with the edge part. As a result, the protrusion is removed from the edge portion of the magnetic tape by the rotating round blade.
Japanese Patent No. 4003510 (pages 3-6, FIGS. 5-8)

  However, the conventional manufacturing apparatus has the following problems. That is, in the conventional manufacturing apparatus, the rotating round blade is brought into contact with the edge portion of the magnetic tape in a state of being stretched between the pair of guide rollers, so that the protrusion (the protruding portion) is scraped off by the rotating round blade. The structure to remove is employ | adopted. In this case, in this type of magnetic tape, a functional layer such as a magnetic layer or a lower layer (underlayer) is formed on one surface of the base tape, and a functional layer such as a backcoat layer is formed on the other surface of the base tape. Due to the difference in thermal expansion coefficient between these functional layers, both end portions in the width direction of the magnetic tape hang down (curve in the width direction: as an example, formation of the magnetic layer Deformation (so-called “cupping”) is likely to occur in the magnetic tape (with the central portion in the width direction on the surface rising).

  For this reason, as shown in FIG. 7, in the conventional protrusion removing means 50, a solid line is shown in accordance with the position of the edge portion (magnetic tape T indicated by a broken line in the figure) of the magnetic tape T where the above deformation has not occurred. When the rotating round blade 52 is arranged in this manner, when the deformed magnetic tape T (magnetic tape T indicated by a solid line in the figure) is run on the tape, the edge portion passes through a position away from the rotating round blade 52. This makes it difficult to remove the protrusions. On the other hand, when the rotating round blade 52 is arranged as shown by a one-dot chain line in the same figure in accordance with the position of the edge portion in the magnetic tape T in which the deformation has occurred, The end portion of the magnetic tape may be excessively scraped off by the rotating round blade 52. In addition, since the degree of deformation of the magnetic tape T changes according to the ambient temperature or the like, the rotating round blade 52 is arranged at a position suitable for removing the protrusion according to the degree of deformation generated in the magnetic tape T. It has become very difficult to do. As described above, the conventional protrusion removing means 50 has a problem that it is difficult to reliably remove the protrusions at the edge due to the deformation occurring in the magnetic tape T.

  Also, today's magnetic tape T tends to be thinner in order to reduce the size of the tape cassette and increase the recording capacity per tape cassette. Therefore, even if it is going to remove said protrusion by making the rotary round blade 52 contact | abut to the edge part of the magnetic tape T of the state spanned between a pair of guide rollers like the conventional protrusion removal means 50, The magnetic tape T is deformed so that the edge portion escapes in the pressing direction of the rotary round blade 52. For this reason, it is difficult for the conventional protrusion removing means 50 to contact the rotating round blade 52 with sufficient force against the edge portion. There is a problem that it is difficult to remove.

  The present invention has been made in view of such problems, and a main object of the present invention is to provide a magnetic tape manufacturing apparatus and a magnetic tape manufacturing method capable of reliably polishing an end portion in the width direction of a tape body.

  In order to achieve the above object, the magnetic tape manufacturing apparatus according to the present invention is a polishing apparatus in which a tape body that has been cut to a predetermined width is abutted with an abrasive while the tape body is running to polish an end in the width direction of the tape body. A magnetic tape manufacturing apparatus including a processing unit, wherein the polishing processing unit includes a first support member that supports the tape body so that the tape body is along a peripheral surface, and the polishing material includes: It arrange | positions so that it may contact | abut in the said width direction with respect to the said edge part of the site | part supported by the said 1st support member in a tape body.

  In the magnetic tape manufacturing apparatus according to the present invention, the polishing processing section is disposed on the upstream side and the downstream side of the first support member in the tape running path, and supports a pair of second support members. When the pair of second support members are viewed from the running direction of the tape body between the pair of second support members, the tape support portions that support the tape body are parallel to each other. The first support member is arranged such that an end on the abrasive side of the both ends in the width direction of the tape body is opposite to an end on the abrasive side of the both ends. The tape body is supported so as to be closer to a virtual plane including the both tape support portions in the pair of second support members than the end portions of the pair of second support members.

  Furthermore, in the magnetic tape manufacturing apparatus according to the present invention, a disk-shaped member as the abrasive is integrally attached to one end of the cylindrical member as the first support member.

  Further, the magnetic tape manufacturing method according to the present invention performs a polishing process in which an abrasive is brought into contact with the tape body that has been cut to a predetermined width, and the end in the width direction of the tape body is polished. A magnetic tape manufacturing method for manufacturing a magnetic tape, wherein the tape body is supported so that the tape body is placed along a peripheral surface of a first support member during the polishing process, and the first tape is supported on the tape body. The abrasive is disposed and polished so as to come into contact with the end of the portion supported by the support member in the width direction.

  According to the magnetic tape manufacturing apparatus and the magnetic tape manufacturing method of the present invention, during the polishing process, the tape body is supported so that the tape body is along the peripheral surface of the first support member, and the first support is provided on the tape body. The polishing material is disposed so as to abut in the width direction against the end portion in the width direction at the portion supported by the member, and the end portion is polished so that it is positioned so as not to cause deformation (cupping). Since the abrasive can be brought into contact with the tape body at the site, the abrasive is not brought into contact with the end of the tape body or excessively strongly pressed without causing the situation of the tape body. Polishing (cleaning) can be performed by reliably bringing the abrasive into contact with the end portion. Thereby, according to this magnetic tape manufacturing apparatus and magnetic tape manufacturing method, the cutting | disconnection waste, protrusion, etc. which are produced in the edge part of a tape body can be removed reliably.

  In addition, according to the magnetic tape manufacturing apparatus of the present invention, the pair of second support members are disposed so that the tape support portions that support the tape body are parallel to each other when viewed from the running direction of the tape body. At the same time, the end on the abrasive side of the tape body is closer to the virtual plane including both tape support portions of the pair of second support members than the end opposite to the end on the abrasive side. As a result of the first support member supporting the tape body, when the tape body supported by the first support member is run, the tape body tends to move toward the abrasive. The force that presses the end of the tape against the abrasive works, so that the end of the tape body can be more reliably polished (cleaned).

  Furthermore, according to the magnetic tape manufacturing apparatus according to the present invention, the disk-shaped member is integrally attached as an abrasive to one end portion of the cylindrical member as the first support member. The complicated alignment work between the cylindrical member) and the abrasive (disk-shaped member) is not required, and the abrasive (disk-shaped member) can be reliably brought into contact with the end of the tape body.

  Hereinafter, the best mode of a magnetic recording medium manufacturing apparatus and a magnetic recording medium manufacturing method according to the present invention will be described with reference to the accompanying drawings.

  First, the configuration of the magnetic tape manufacturing system 1 will be described.

  A magnetic tape manufacturing system 1 shown in FIG. 1 is a manufacturing system for manufacturing a magnetic tape for a tape cassette, and includes a functional layer forming device 2, a cutting device 3, a cleaning device 4, and a winding device 5. Yes. The functional layer forming apparatus 2 includes various devices such as a material coating device, a drying device, and a calendar device (not shown), and forms various functional layers such as a magnetic layer and a back coat layer on the surface of the base tape. A raw fabric (not shown) is manufactured. The cutting device (slitter) 3 is a magnetic tape T (tape body in the present invention) that can be wound around a tape reel in a cassette case by cutting the original magnetic tape manufactured by the functional layer forming device 2 into a predetermined width. Example: see FIGS. 2-4). In this case, as described above, when the original magnetic tape is cut to a predetermined width by this type of cutting device 3, protrusions protruding in the width direction of the magnetic tape T are formed on the cut surface, or cutting waste is generated on the magnetic tape T. It may become attached to the cut surface without falling off. Therefore, in this magnetic tape manufacturing system 1, the structure which removes these protrusions and cutting waste (cleaning process) by the cleaning apparatus 4 is employ | adopted.

  Specifically, as shown in FIG. 2, the cleaning device 4 winds the feeding-side tape reel 10a that feeds out the magnetic tape T cut to a predetermined width by the cutting device 3, and the magnetic tape T that has completed the cleaning process. A tape running path is formed between the winding tape reel 10b and the guide rollers 11a to 11e. Each guide roller 11a to 11e is actually provided with a flange for restricting the movement of the magnetic tape T in the width direction. However, in order to facilitate understanding of the present invention. Further, these illustrations are omitted. Further, in the cleaning device 4, the end polishing processing unit 12 is disposed between the guide rollers 11a and 11b corresponding to the pair of second support members in the present invention, and the surface polishing is performed between the guide rollers 11d and 11e. A processing unit 13 is provided. In this case, the edge polishing processing unit 12 is compatible with the guide roller 11a (an example of the second upstream support member in the present invention) and the guide roller 11b (an example of the second downstream support member in the present invention). As a result, the polishing processing unit according to the present invention is configured, and the guide roller 21 and the polishing plate 22 are provided between the guide rollers 11a and 11b.

  The guide roller 21 corresponds to a cylindrical member as a first support member in the present invention, and is rotatably attached to the front panel of the cleaning device 4 in the same manner as the guide rollers 11a to 11e. The polishing plate 22 corresponds to a disk-shaped member as an abrasive in the present invention, and is formed such that its outer diameter is larger than the diameter of the guide roller 21 as shown in FIGS. Is integrally attached to one end portion of the guide roller 21 so as to face the end face of one end portion of the guide roller 21. The polishing plate 22 is entirely formed of aluminum in a flat plate shape (specifically, a disk shape), and fine irregularities are formed on the inner surface 22a facing the magnetic tape T by alumina treatment. Yes. In this case, in the cleaning device 4 (end polishing unit 12), as shown in FIG. 4, when viewed from the traveling direction of the magnetic tape T between the guide rollers 11a and 11b, both guide rollers 11a and 11a, The guide rollers 11a and 11b are arranged so that the tape support portion (in this example, the portion indicated by the two-dot chain line L2 on the peripheral surface of both guide rollers 11a and 11b) that supports the magnetic tape T in 11b is parallel to each other. ing.

  Further, in the cleaning device 4 (end polishing processing unit 12), as shown in FIGS. 3 and 4, the axial direction of the guide rollers 11a and 11b (the horizontal direction in FIG. 4; specifically, the two-dot chain line). (The direction parallel to L2) and the axial direction of the guide roller 21 (the direction parallel to the alternate long and short dash line L1 in FIG. 4) intersect the polishing plate 22 with respect to the guide rollers 11a and 11b. The guide rollers 11a, 11b, and 21 are attached so that the end on the side is inclined closer to the virtual plane connecting the portions of the two-dot chain line L2 on the peripheral surfaces of the guide rollers 11a and 11b than the ends on the opposite side) It has been. Thus, in this cleaning device 4 (end polishing processing unit 12), the end on the polishing plate 22 side (the end on the right side in the figure) of the both ends in the width direction of the magnetic tape T is A virtual plane (in this example, two points) including the tape support portion in both guide rollers 11a and 11b rather than the end portion on the opposite side to the end portion on the abrasive side (the end portion on the left side in the figure). The guide roller 21 supports the magnetic tape T along the peripheral surface 21a at the portion indicated by the alternate long and short dash line L1 so as to be close to the plane in front of the paper surface indicated by the chain line L2. Therefore, when the magnetic tape T is running, the polishing plate 22 is in contact with the end portion of the magnetic tape T supported by the guide roller 21 (the end portion on the polishing plate 22 side) in the width direction of the magnetic tape T. Touch.

  The surface polishing processing unit 13 polishes the surface of the magnetic layer in the magnetic tape T, so that the end portion of the magnetic tape T is cut by cutting scraps or the end polishing processing unit 12 generated when the magnetic tape original is cut by the cutting device 3. As shown in FIG. 2, the guide rollers 11d, 11e, the cleaning tape (the feeding-side tape reel 13a around which the cleaning tape Tc is wound, and the cleaning process) are removed. The cleaning tape Tc is disposed on the surface of the magnetic tape T (magnetic layer) disposed between the take-up side tape reel 13b that winds up the cleaning tape Tc that has been soiled by (polishing) and the guide rollers 11d and 11e. The guide roller 13c is pressed against the surface.

  The winding device 5 includes a servo writer (not shown) that records servo data on the magnetic tape T that has been cleaned by the cleaning device 4, and the magnetic tape T that has been recorded servo data in the cassette case. And a winding device (not shown) for winding the tape reel.

  Next, a method for manufacturing a magnetic tape by the magnetic tape manufacturing system 1 will be described focusing on a cleaning process for the magnetic tape T by the cleaning device 4.

  First, the functional layer forming apparatus 2 forms a magnetic layer and a backcoat layer on the surface of a base tape for manufacturing a magnetic tape. Specifically, the magnetic layer is formed by applying a magnetic paint on one side of the base tape and drying, and the back coat layer is formed by applying the paint for forming a back coat layer on the other side of the base tape and drying it. Form. Next, the magnetic tape original fabric on which the formation of each functional layer is completed is cut into a predetermined width by the cutting device 3 to manufacture the magnetic tape T. In addition, since the formation method of each functional layer by the functional layer forming apparatus 2, the calendar process executed after the functional layer is formed, and the cutting process of the magnetic tape raw material by the cutting apparatus 3 are well known, detailed description and illustration are omitted. . Next, the cleaning device 4 performs a cleaning process on the magnetic tape T on which cutting waste and protrusions have been generated during the cutting process by the cutting apparatus 3.

  Specifically, first, as shown in FIG. 2, the magnetic tape T is pulled out from the feeding-side tape reel 10a, and the pulled-out magnetic tape T is applied to the guide rollers 11a, 21, 11b to 11d, 13c, and 11e. It winds around in order and winds around the winding side tape reel 10b. Next, in a state where a prescribed tension is applied to the magnetic tape T, the feeding side tape reel 10a and the winding side tape reel 10b are rotated in the directions of arrows A1 and A2. As a result, the magnetic tape T is caused to travel on the tape travel path in the direction of the arrow A. At this time, as shown in FIGS. 3 and 4, in the cleaning device 4, the magnetic tape T is positioned between the guide rollers 11 a and 11 b on the end side to which the polishing plate 22 of the guide roller 21 is attached. Since the tape running path is designed as described above, the end of the magnetic tape T in the width direction can be passed through a position where it abuts against the inner surface 22a of the polishing plate 22 attached to the tip of the guide roller 21. Further, as shown in FIG. 3, as the magnetic tape T is moved in the direction of the arrow A, the guide rollers 11a and 11b are rotated in the directions indicated by the arrows B1 and B1, and the guide roller 21 is moved to the arrow. It is rotated in the direction of arrow B2 opposite to B1. Accordingly, the polishing plate rotated in the direction of the arrow B2 together with the guide roller 21 by the end in the width direction of the magnetic tape T passing through the end polishing processing unit 12 contacting the inner surface 22a of the polishing plate 22 The end portion of the magnetic tape T is polished (cleaned) so that the cutting scraps and protrusions are scraped off by 22.

  In this case, in the cleaning device 4, the magnetic tape T is in contact with and supported by the guide roller 21 along the peripheral surface 21 a of the guide roller 21 between the guide rollers 11 a and 11 b. Therefore, unlike the protrusion removing means 50 in the conventional manufacturing apparatus, the magnetic tape T is positioned so as to fit the peripheral surface 21a of the guide roller 21 at the portion where the magnetic tape T abuts against the polishing plate 22. As a result, deformation (cupping) occurs at this portion. The situation that occurs is avoided. For this reason, a situation in which the degree of deformation (capping) occurring in the magnetic tape T changes according to the ambient temperature during the cleaning process and the relative position of the polishing plate 22 with respect to the end of the magnetic tape T is avoided. . As a result, the end of the magnetic tape T can be reliably brought into contact with the polishing plate 22 that is fixed to the magnetic tape T that is attached to the tip of the guide roller 21 and travels along the tape running path. It has become.

  Moreover, in this cleaning device 4, as described above, the end on the polishing plate 22 side of the both ends in the width direction of the magnetic tape T is opposite to the end on the abrasive side of the both ends. A configuration in which the guide roller 21 supports the magnetic tape T so as to be closer to the virtual plane including the tape support portion (the portion indicated by the two-dot chain line L2 in FIG. 4) in both the guide rollers 11a and 11b than the end portion. It has become. Therefore, the magnetic tape T that is running between the guide rollers 11a and 11b is moved in the direction of the arrow C shown in FIGS. 3 and 4 toward the end on the polishing plate 22 side close to the virtual plane. As a result, the end of the magnetic tape T on the polishing plate 22 side is pressed against the inner surface 22a of the polishing plate 22 with a sufficient force. As a result, the cutting scraps and protrusions generated at the end in the width direction of the magnetic tape T are reliably removed.

  On the other hand, the magnetic tape T whose edge in the width direction has been polished (cleaned) by the end polishing processor 12 is allowed to pass through the site of the surface polishing processor 13 after passing through the sites of the guide rollers 11c and 11d. At this time, the cleaning tape Tc sandwiched between the magnetic tape T and the guide roller 13c is very slow (from the tape running speed of the magnetic tape T) from the feeding side tape reel 13a to the winding side tape reel 13b. Since the tape is fed at a sufficiently slow speed), the surface of the magnetic tape T (in this example, the surface on which the magnetic layer is formed) is polished (cleaned) so as to be rubbed against the cleaning tape Tc. As a result, cutting scraps by the cutting device 3 and polishing scraps removed by the end polishing processing unit 12 adhere to the cleaning tape Tc, and the surface of the magnetic tape T is sufficiently cleaned. Subsequently, the magnetic tape T that has been subjected to the cleaning process by the surface polishing processing unit 13 passes through the portion of the guide roller 11e and is wound around the take-up tape reel 10b, and a series of cleaning processes (polishing processes) is completed. Thus, the magnetic tape in the present invention is completed. Thereafter, the take-up tape reel 10b is set in the take-up device 5, and the servo data recording by the servo writer and the winding (winding) on the reel in the tape cassette by the winding device are executed. Thereby, a cassette tape is completed.

  As described above, according to the cleaning device 4 and the method (polishing method) for manufacturing the magnetic tape T by the cleaning device 4, the magnetic material is applied to the peripheral surface 21 a of the guide roller 21 (first support member) during the polishing process in the present invention. The magnetic tape T is supported along the tape T (tape body), and is polished so as to come into contact with the end in the width direction at the portion of the magnetic tape T supported by the guide roller 21. The polishing plate 22 can be brought into contact with the magnetic tape T at a position positioned so as not to cause deformation (cupping) by disposing the plate 22 (abrasive) and polishing the end portion. Without incurring a situation where the abrasive is in a non-contact state or excessively pressed against the end of the tape T, the magnetic tape T Is reliably contact the polishing plate 22 to the part may be polished (cleaned) by. Thereby, according to this cleaning device 4 and the manufacturing method (polishing method) of the magnetic tape T by the cleaning device 4, it is possible to reliably remove cutting debris and protrusions generated at the end of the magnetic tape T. .

  Further, according to the cleaning device 4 and the method (polishing method) for manufacturing the magnetic tape T by the cleaning device 4, when viewed from the traveling direction of the magnetic tape T, the tape support portions that support the magnetic tape T are parallel to each other. A pair of guide rollers 11a and 11b (second support members) are disposed so that the end on the polishing plate 22 side of the magnetic tape T is opposite to the end on the polishing plate 22 side. Rather than the guide roller 21 supporting the magnetic tape T so as to approach the virtual plane including both tape support portions of the pair of guide rollers 11a and 11b, the magnetic tape is supported by the guide roller 21. As a result of the magnetic tape T trying to move toward the polishing plate 22 when the T is run, the end of the magnetic tape T is pushed against the polishing plate 22. Working kicking force, it is possible to more reliably polish the ends of the magnetic tape T (cleaning).

  Furthermore, according to the cleaning device 4 and the method (polishing method) for manufacturing the magnetic tape T by the cleaning device 4, the present invention is provided at one end of the guide roller 21 corresponding to the cylindrical member as the first support member in the present invention. By attaching a polishing plate 22 corresponding to a disk-shaped member as a polishing material in an integrated manner, complicated alignment work between the guide roller 21 and the polishing plate 22 is unnecessary, and polishing is performed on the end of the magnetic tape T. The inner surface 22a of the plate 22 can be reliably brought into contact.

  In addition, this invention is not limited to said structure. For example, in the cleaning device 4 (end polishing processing unit 12) described above, a disk-shaped member as an abrasive in the present invention is provided at one end of a guide roller 21 corresponding to a cylindrical member as a first support member in the present invention. However, the configuration of the polishing processing portion in the present invention is not limited to this, and the first support member and the abrasive in the present invention can be formed separately. . Specifically, like the end polishing unit 12A shown in FIG. 5, a guide roller 21 corresponding to the first support member in the present invention and a polishing plate 32 which is another example of the abrasive in the present invention. It is also possible to adopt a configuration in which the end portions of the magnetic tape T are polished (cleaned) by being arranged separately from each other and arranged so that the outer surface 32a of the polishing plate 32 is positioned at the tip end portion of the guide roller 21. In this case, in the end polishing unit 12A shown in the figure, as an example, the polishing plate 32 is formed in a flat plate shape (specifically, a disk shape) as a whole with aluminum, and the outer surface 32a has an alumina treatment. Thus, fine irregularities are formed, and the plate surface is attached to the end portion of the shaft 31 so as to face the end surface of the shaft 41. In FIG. 6 and FIG. 6 to be referred to later, the same components as those of the magnetic tape manufacturing system 1 described above are denoted by the same reference numerals and redundant description is omitted.

  On the other hand, a guide roller 21 corresponding to the first support member in the present invention and a polishing plate 42, which is another example of the abrasive material in the present invention, are separated from each other as in the end polishing processing section 12B shown in FIG. It is also possible to adopt a configuration in which the end portion of the magnetic tape T is polished (cleaned) by disposing the outer edge portion (end surface) 42a of the polishing plate 42 at the front end portion of the guide roller 21. . In this case, in the end polishing processing section 12B shown in the figure, as an example, the polishing plate 42 as a whole is formed into a flat plate shape (specifically, a disk shape) with aluminum, and the outer edge portion 42a has alumina. Fine irregularities are formed by the processing, and are attached to the tip of the shaft 41 so that the plate surface is orthogonal to the shaft 41. As described above, also in the end polishing processing portions 12A and 12B in which the first support member in the present invention and the polishing material in the present invention are separately formed, the processing parts for polishing the cutting scraps and protrusions by the polishing plates 32 and 42. In this case, the above-described end polishing unit 12 is supported by supporting the magnetic tape T along the peripheral surface of the first support member (in this example, the peripheral surface 21a of the guide roller 21). In the same manner as described above, the end of the magnetic tape T is reliably polished (cleaned) as a result of avoiding the occurrence of cupping on the magnetic tape T and the escape of the magnetic tape T when the polishing plates 32 and 42 are pressed. )can do. In addition, when the guide roller 21 and the polishing plates 32 and 42 are formed separately, they can be easily exchanged according to the degree of contamination of the polishing plates 32 and 42.

  Further, in the above-described end polishing processing units 12, 12A, and 12B, the example in which the polishing plate 22 in which fine unevenness is formed by alumina treatment of an aluminum flat plate has been described as the polishing material in the present invention. The invention is not limited to this, and various abrasives composed of a chrome-treated material, a polishing cloth, and a material such as tungsten steel can be employed. Furthermore, the first support member and the second support member in the present invention are not limited to cylindrical members such as the guide rollers 11a, 11b, and 21 as long as they can be supported without causing damage to the magnetic tape T. Various types of supporting members can be employed.

1 is a block diagram of a magnetic tape manufacturing system 1. FIG. 3 is a configuration diagram showing a configuration of a cleaning device 4. FIG. 4 is an external perspective view of an end polishing processing unit 12 in the cleaning device 4. FIG. 4 is an explanatory diagram for explaining the positional relationship between the guide rollers 11a, 11b, and 21 and the polishing plate 22 and the magnetic tape T in the end polishing processing section 12. FIG. It is explanatory drawing for demonstrating the positional relationship of the guide roller 21, the grinding | polishing board 32, and the magnetic tape T in the edge part grinding | polishing process part 12A. It is explanatory drawing for demonstrating the positional relationship of the guide roller 21, the grinding | polishing board 42, and the magnetic tape T in the edge part grinding | polishing process part 12B. It is explanatory drawing for demonstrating the positional relationship of the rotary round blade 52 and the magnetic tape T in the conventional protrusion removal means 50. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Magnetic tape manufacturing system 4 Cleaning apparatus 11a, 11b Guide roller 12, 12A, 12B End grinding | polishing processing part 21 Guide roller 21a Circumferential surface 22,32,42 Polishing plate 22a Inner surface 32a Outer surface 42a Outer edge part T Magnetic tape

Claims (4)

A magnetic tape manufacturing apparatus comprising a polishing processing unit for polishing an end of a tape body in a width direction by bringing an abrasive into contact with a tape body cut to a predetermined width while moving the tape,
The polishing processing unit includes a first support member that supports the tape body so that the tape body is along a peripheral surface,
The said abrasive | polishing material is a magnetic tape manufacturing apparatus arrange | positioned so that it may contact | abut in the said width direction with respect to the said edge part of the site | part supported by the said 1st support member in the said tape body. The polishing processing unit includes a pair of second support members disposed on the upstream side and the downstream side of the first support member in the tape running path to support the tape body,
The pair of second support members are arranged such that the tape support portions that support the tape body are parallel to each other when viewed from the traveling direction of the tape body between the pair of second support members. ,
The first support member has an end on the abrasive material side of both end portions in the width direction of the tape body, and an end portion on the opposite side of the end portion on the abrasive material side of the both end portions. The magnetic tape manufacturing apparatus according to claim 1, wherein the tape body is supported so as to approach a virtual plane including the tape support portions of the pair of second support members.   3. The magnetic tape manufacturing apparatus according to claim 1, wherein a disk-shaped member as the abrasive is integrally attached to one end of a cylindrical member as the first support member. A magnetic tape manufacturing method for manufacturing a magnetic tape by performing a polishing process in which an abrasive is brought into contact with a tape body that has been cut to a predetermined width and a polishing material is abutted to polish the end in the width direction of the tape body. ,
In the polishing process, the tape body is supported so that the tape body is along the peripheral surface of the first support member, and the end of the portion of the tape body supported by the first support member is supported on the tape body. A magnetic tape manufacturing method in which the abrasive is disposed and abraded so as to abut against the width direction.

Images