JP4584854B2 - Magnetic tape cartridge - Google Patents

Description

  The present invention relates to a magnetic tape cartridge and an information storage medium housing case, and more particularly to a magnetic tape cartridge and an information storage medium that can be managed according to an entry / exit process by wireless communication with an RFID reader with an RFID tag attached. Concerning the storage case.

  For example, as described in Japanese Patent Application Laid-Open No. 2006-27777, in an IDC center that handles magnetic tape cartridges and the like in large quantities of about several hundred thousand volumes, RFID tags are attached to the magnetic tape cartridges and wireless communication is performed. Management of loading and unloading of magnetic tape cartridges is carried out. An RFID (Radio Frequency IDentification) tag has an IC chip and an antenna, and is attached to an article such as a magnetic tape cartridge. An RFID tag generates electric power by electromagnetic induction based on radio waves transmitted from an RFID reader or an RFID reader / writer (hereinafter simply referred to as an RFID reader), and an ID (IDentification: identification information) related to the article by the electric power. ) And the like are transmitted to the RFID reader.

  The physical and magnetic properties of magnetic tape cartridges that are generally used for recording various data used in accounting processing systems, purchasing processing systems, etc. are defined by JIS X6135-1997 of Japanese Industrial Standards. Has been. FIG. 1 is a perspective view showing an overview of a magnetic tape cartridge defined by the standard. In FIG. 1, 1 is a front wall part, 2 is a side wall part, 3 is a rear wall part, 4 is an upper wall part, 5 is a magnetic tape, 6 is a leader block, 7 is a write-inhibiting mechanism, and 8 is a positioning notch. According to the standard, the label area where the label can be attached on the outer surface portion of the magnetic tape cartridge is limited to the outer surface portions of the upper wall portion 4 and the rear wall portion 3.

JP 2006-27777 A

  The RFID tag is usually attached to the outer surface portion of the upper wall portion of the magnetic tape cartridge as described above. Since the RFID tag is affixed to the outer surface of the magnetic tape cartridge, the RFID tag may be damaged during various handling, and reading information from the RFID tag becomes unstable. Also, when reading information from the RFID tag attached to each magnetic tape cartridge, it is necessary to determine the posture so that the RFID reader faces the RFID tag attached to the magnetic tape cartridge each time. There is a problem that it takes time to read the information.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a magnetic tape cartridge and an information storage medium accommodation case capable of stably reading information from an RFID tag. . It is another object of the present invention to provide a magnetic tape cartridge and an information storage medium accommodation case that can easily read information with an RFID reader.

  In order to solve the above technical problem, the magnetic tape cartridge according to the present invention is partially or entirely belt-shaped inside the rear wall portion facing the front wall portion where the opening for drawing out the magnetic tape is formed. A certain RFID tag is arranged.

In the magnetic tape cartridge according to the present invention, the RFID tag has two bent portions, and the bent portions extend along a side wall portion perpendicular to the rear wall portion.

  The magnetic tape cartridge according to the present invention uses an RFID tag that operates with radio waves in the UHF band.

  In addition, the magnetic tape cartridge according to the present invention has a length that is ¼ or ½ of the wavelength of the radio wave in the UHF band in which the antenna length of the RFID tag is used. .

  Further, in the magnetic tape cartridge according to the present invention, a label on which the character or character string or the symbol or symbol string indicating that the RFID tag is arranged on the back side is attached to the outer surface portion of the rear wall portion. It is what I did.

  Further, in the magnetic tape cartridge according to the present invention, a first RFID tag that is partially or entirely belt-like is disposed inside the rear wall portion that faces the front wall portion in which an opening for drawing out the magnetic tape is formed. At the same time, the second RFID tag is attached to the inner or outer surface of the upper wall that intersects the front wall and the rear wall perpendicularly.

  In the magnetic tape cartridge according to the present invention, the first RFID tag operates with a UHF band radio wave and the second RFID tag operates with a short wave radio wave, or the first RFID tag has a short wave band. The second RFID tag operates with radio waves in the UHF band while operating with radio waves.

  The storage case for the information storage medium according to the present invention has a substantially rectangular parallelepiped shape so as to store the information storage medium, and the open side edge of the upper wall portion that is rotated when the information storage medium is taken out. An RFID tag that is partially or entirely band-shaped is disposed inside the rear wall portion that faces the front wall portion that intersects the upper wall portion perpendicularly at the portion.

  The storage case for the information storage medium according to the present invention has a substantially rectangular parallelepiped shape so as to store the information storage medium, and the open side edge of the upper wall portion that is rotated when the information storage medium is taken out. A first RFID tag that is partially or entirely strip-shaped is disposed inside the rear wall portion that faces the front wall portion that intersects the upper wall portion perpendicularly to the upper wall portion, and faces the upper wall portion or the upper wall portion. The second RFID tag is attached to the inner surface or the outer surface of the bottom wall.

  In addition, the information storage medium storage case according to the present invention has a character or character string or a symbol or symbol string indicating that an RFID tag is disposed on the outer surface of the rear wall on the back side. It is intended to be affixed.

  According to the invention of the present application, since the RFID tag which is partly or entirely strip-shaped is arranged inside the rear wall portion facing the front wall portion where the opening for drawing out the magnetic tape is formed, the magnetic tape It is possible to prevent the RFID tag from being damaged during various handling of the cartridge, and to read information from the RFID tag stably. Further, in order to protect the opening, the magnetic tape cartridge is usually stored with the front wall portion where the opening is located facing the back of the storage shelf. As a result, the rear wall portion on which the RFID tag is arranged faces the front of the user, so that the RFID tag information can be read by simply pointing the RFID reader toward the magnetic tape cartridge. It is possible to easily read information from the computer.

According to the present invention, the RFID tag has two bent portions, and the bent portion extends along the side wall portion perpendicular to the rear wall portion, so that the area of the RFID tag antenna is increased. It is possible to improve the reception sensitivity of radio waves transmitted from the RFID reader. Further, even if a negative pressure is generated when the magnetic tape is wound and a force is applied so that the RFID tag is pulled in the direction of the magnetic tape, the end portion of the bent portion is formed on the wall portion defining the inside of the magnetic tape cartridge. Since the RFID tag is engaged and supported, the displacement or deformation of the RFID tag can be minimized to prevent the RFID tag from being damaged.

  According to the present invention, since it is configured to use an RFID tag that operates with radio waves in the UHF band, a longer readable distance can be obtained compared to an RFID tag that operates with radio waves in the short wave band. There is an effect that data can be read more stably by the RFID reader.

  According to the present invention, the antenna length of the RFID tag is configured to have a quarter length or a half length of the wavelength of the UHF band radio wave to be used. Therefore, there is an effect that data reading by the RFID reader can be performed more stably.

  According to the present invention, because the outer wall portion of the rear wall portion is configured such that a label indicating a character or character string or a symbol or symbol string indicating that the RFID tag is disposed on the back side is attached. Since the RFID reader user can clearly identify the position of the RFID tag and does not need to set the orientation of the RFID reader by trial and error, the convenience of the RFID reader user can be improved.

  According to the present invention, the first RFID tag that is partly or entirely strip-shaped is disposed inside the rear wall portion facing the front wall portion in which the opening for drawing out the magnetic tape is formed, and the front wall portion Since the second RFID tag is attached to the inner surface portion or the outer surface portion of the upper wall portion perpendicular to the rear wall portion, the first RFID tag and the second RFID tag have the same frequency band. When operating with radio waves, it has directivity in two directions with respect to radio waves in the frequency band, and it relates to the relative position and orientation of the RFID reader with respect to the magnetic tape cartridge when reading information from the RFID tag. Since the degree of freedom is increased, the convenience of the RFID reader user can be improved.

  According to the present invention, the first RFID tag operates with UHF band radio waves and the second RFID tag operates with short wave radio waves, or the first RFID tag operates with short wave radio waves. Since the second RFID tag is configured to operate with UHF band radio waves, the RFID tag information can be read using either UHF band radio waves or short wave radio waves. There is an effect that the flexibility of the management system for managing the cartridge can be improved. In addition, even when an RFID tag that operates with radio waves in one frequency band is damaged and becomes unusable, information reading can be continued using an RFID tag that operates with radio waves in the other frequency band. In addition, there is an effect that the usable period of the RFID tag can be extended.

  According to the present invention, it has a substantially rectangular parallelepiped shape so as to accommodate the information storage medium, and is perpendicular to the upper wall portion at the open end edge of the upper wall portion that is rotated when the information storage medium is taken out. The RFID tag, which is partly or entirely band-shaped, is arranged inside the rear wall part that faces the intersecting front wall part, so that the RFID tag is prevented from being damaged during various handling of the housing case. Thus, it is possible to stably read information from the RFID tag. Further, the storage case is usually stored with the front wall portion on the open side facing the back of the storage shelf. As a result, the rear wall portion on which the RFID tag is disposed faces the front of the user, so that the RFID tag information can be read by simply pointing the RFID reader in the direction of the housing case. The information can be easily read.

  According to the present invention, it has a substantially rectangular parallelepiped shape so as to accommodate the information storage medium, and is perpendicular to the upper wall portion at the open edge of the upper wall portion that is rotated when the information storage medium is taken out. A first RFID tag that is partly or entirely strip-shaped is disposed inside the rear wall portion that faces the intersecting front wall portion, and the inner surface portion or outer surface of the bottom wall portion that faces the upper wall portion or the upper wall portion Since the second RFID tag is attached to the part, when the first RFID tag and the second RFID tag operate with radio waves in the same frequency band, Because it has directivity and the degree of freedom related to the relative position and orientation of the RFID reader with respect to the information storage medium housing case when reading information from the RFID tag is increased, the convenience of the RFID reader user is improved. thing An effect that can be. In addition, when the first RFID tag and the second RFID tag operate with radio waves in different frequency bands, information on the RFID tag can be read regardless of which radio wave is used. The flexibility of the information storage medium management system can be improved. Furthermore, even when an RFID tag that operates with radio waves in one frequency band is damaged and becomes unusable, information reading can be continued using an RFID tag that operates with radio waves in the other frequency band. In addition, there is an effect that the usable period of the RFID tag can be extended.

Embodiments according to the present invention will be described below with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 2 is a partial perspective view showing the magnetic tape cartridge according to Embodiment 1 of the present invention. The magnetic tape cartridge in this figure is shown as being cut parallel to the horizontal direction. 2, the same reference numerals as those in FIG. 1 denote the same components, and the description thereof is omitted. In the following drawings, the components already described are similarly denoted by the same reference numerals, and the description thereof is omitted. In FIG. 2, 11 is a central part around which a magnetic tape is wound, 12 is a partition provided to partition a space for accommodating the wound magnetic tape, and 13 is formed in a belt shape. The RFID tag 13a is an RFID main body disposed along the rear wall 3 in the RFID tag 13, and 13b is an RFID bent portion that is bent from the RFID main body 13a and extends along the side wall 2 respectively.

  FIG. 3 is a cross-sectional view showing the vicinity of the rear wall of the magnetic tape cartridge. FIG. 3A is a view showing the vicinity of the rear wall portion of a conventional magnetic tape cartridge, and FIG. 3B is a view showing the vicinity of the rear wall portion of the magnetic tape cartridge according to the present invention. In the magnetic tape cartridge shown in FIG. 3 (a), the partition portion 12 is joined to the rear wall portion 3, whereas in the magnetic tape cartridge shown in FIG. The difference is that a gap is formed between the partition portion 12 and the rear wall portion 3 by cutting. In the present invention, it is possible to place the RFID tag 13 inside the rear wall 3 by forming such a gap. In Japanese Industrial Standard JIS X6135-1997, there is no provision regarding the joining form of the partition part 12 and the rear wall part 3. For this reason, even if the gap as described above is formed, it does not conflict with the provisions of JIS X6135-1997.

  The magnetic tape cartridge according to the present invention is subjected to a specified drop test in order to inspect its strength. In this drop test, the magnetic tape cartridge according to the present invention was naturally dropped from above 1.2 m toward the P tile stuck on the prescribed aluminum access floor. As a result, it was confirmed that the shell case constituting the magnetic tape cartridge was not completely separated.

  FIG. 4 is a plan view showing an RFID tag that operates on radio waves in the UHF band. In FIG. 4, 21 is a base portion formed in a band shape so as to define the entire shape of the RFID tag 13, 22 is an antenna, and 23 is an IC chip. The IC chip 23 includes a central processing unit (CPU), a memory, a transmission / reception circuit, a power supply circuit, and the like. The RFID tag 13 operating in the UHF band is configured to operate at a frequency of 950 MHz. The length of the antenna 22 is set to 79 mm so as to be a quarter of the wavelength of the radio wave of 950 MHz. In the example of the configuration of the RFID tag that operates on the radio wave in the UHF band shown in FIG. 4, the length a in the long side direction of the RFID tag is about 80 mm, and the length b in the short side direction is about 11 mm. An RFID tag that operates in a short wave band is configured to operate at a frequency of 13.56 MHz. The RFID tag operating in the short wave band has an internal configuration different from that of the RFID tag operating in the UHF band, but can be formed in substantially the same form in terms of external shape.

  When the RFID tag is operated using radio waves in the UHF band, the readable distance given as the maximum distance within the range in which the RFID reader can read the data of the RFID tag is about several meters. On the other hand, when the RFID tag is operated using radio waves in a short wave band, the readable distance is several tens of centimeters. Regarding the directivity of the RFID tag, there is no significant difference between the case of using UHF band radio waves and the case of using short wave radio waves. Further, the assembly of magnetic tapes wound in the magnetic tape cartridge has the same characteristics as the cylindrical metal body. When the RFID tag is brought close to such a metal body, the reception sensitivity tends to decrease. Although the space | interval between the rear wall part 3 and the said metal body is 10 mm or more, the space | interval between the upper wall part 4 and the said metal body is about 5-6 mm. Therefore, it is possible to realize a longer readable distance and better reception sensitivity by arranging the RFID tag 13 that operates with the radio wave of the UHF band inside the rear wall portion 3 of the magnetic tape cartridge. Reading of RFID tag information by the reader can be performed more stably.

  As for the area of the antenna of the RFID tag, the reception sensitivity of the radio wave transmitted from the RFID reader can be improved as the area is increased. When the length a in the long side direction of the RFID tag 13 is longer than the width of the rear wall 3, the RFID tag is bent and arranged as shown in FIG. 2 to secure a desired area, Good reception sensitivity can be obtained. Further, when the magnetic tape is wound, a negative pressure is generated and a force is applied so that the RFID main body 13a is pulled in the direction of the magnetic tape, but the end of the RFID bent portion 13b is engaged with the partition portion 12. Thus, since the RFID tag 13 is supported, it is possible to prevent the RFID tag from being damaged by minimizing the displacement or deformation of the RFID tag.

  Next, in order to measure the readable distance of information related to the magnetic tape cartridge in each of the case where the RFID tag is attached to the outer surface of the magnetic tape cartridge and the case where the RFID tag is disposed inside the magnetic tape cartridge. The experiment conducted will be described. FIG. 5 is a diagram illustrating an experimental method for measuring the readable distance. In FIG. 5, 31 is an antenna that is connected to an RFID reader and transmits / receives UHF band radio waves to / from an RFID tag, and 32 is a magnetic tape cartridge. In the magnetic tape cartridge 32, an RFID tag is affixed to the outer surface of the wall facing the antenna 31, or the RFID tag is disposed inside the wall. In this experiment, the antenna 31 is moved in a direction away from the magnetic tape cartridge 32, and the distance to the point where the information of the RFID tag cannot be read is specified as the readable distance.

  Linearly polarized waves and circularly polarized waves are used as UHF band radio waves transmitted from the antenna 31. Further, assuming that a center line extending perpendicularly to the antenna surface in the direction of the magnetic tape cartridge 32 from the center point of the antenna 31 is located on the center line, the RFID tag is located 10 cm away from the center line. Experimental results were obtained for each of the case where the RFID tag was placed at a position 20 cm away from the center line and the case where the RFID tag was placed at a position 25 cm away from the center line. Table 1 is a table showing the experimental results of the readable distance measurement experiment. As shown in Table 1, the readable distance becomes longer when linearly polarized waves are used than when circularly polarized waves are used. Further, the readable distance becomes shorter as the RFID tag is separated from the center line. However, as for the attachment mode of the RFID tag, even when the RFID tag is attached to the outer surface portion of the wall portion facing the antenna, the case where the RFID tag is disposed inside the wall portion is compared. There was no difference in the readable distance.

  As described above, according to the magnetic tape cartridge of the first embodiment, since the RFID tag is arranged inside the rear wall portion of the magnetic tape cartridge, the magnetic tape cartridge can be handled in various ways. The RFID tag is prevented from being damaged, and information can be stably read from the RFID tag. Further, when the magnetic tape cartridge is stored in a storage shelf such as a rack in the storage in the storage of the IDC center, usually, before the opening is located in order to protect the opening from which the magnetic tape is drawn. Store with the wall facing the back of the rack. That is, the magnetic tape cartridge is stored such that the rear wall portion of the magnetic tape cartridge faces the front direction of the storage shelf. As a result, the RFID tag disposed inside the rear wall of the magnetic tape cartridge faces the front of the RFID reader user. Therefore, if the RFID reader is simply directed toward the magnetic tape cartridge, the RFID tag Therefore, it is possible to easily read information from the RFID tag.

  As shown in FIG. 2, since the RFID tag is configured to be folded, the antenna area of the RFID tag can be increased, and the reception sensitivity of the radio wave transmitted from the RFID reader can be improved. it can. Furthermore, even if a negative pressure is generated when the magnetic tape is wound and a force is applied so that the RFID tag is pulled in the direction of the magnetic tape, the end of the bent portion engages with the partition portion and the RFID tag is Since it supports, the RFID tag can be prevented from being damaged by minimizing the displacement or deformation of the RFID tag. In addition, by using an RFID tag that operates on radio waves in the UHF band as an RFID tag, a longer readable distance can be obtained compared to an RFID tag that operates on radio waves in a short wave band. Can be carried out more stably. In addition, since the antenna length of the RFID tag is set to a quarter of the wavelength of the UHF band radio wave to be used, the reception sensitivity can be increased, so that the RFID reader can stably read data. Can do. The same effect can be obtained even when the antenna length of the RFID is half the wavelength of the radio wave in the UHF band to be used.

  According to JIS X6135-1997, the outer surface of the rear wall is a label area where a label can be applied. Of course, identification information representing the content of information recorded on the magnetic tape cartridge can be written on this label. For example, an ID code uniquely assigned to each RFID tag and given to the RFID is written. You may do it. Thereby, even if the RFID tag breaks down, for example, by inputting the ID code into the RFID reader by manual input or the like, the trouble related to the management of the magnetic tape cartridge can be minimized. Furthermore, a character or a character string or a symbol or a symbol string indicating that an RFID tag exists on the back side of the label may be written on the label attached to the outer surface portion of the rear wall portion. Thereby, the user of the RFID reader can clearly specify the position of the RFID tag, and it is not necessary to set the direction of the RFID reader by trial and error, so that the convenience of the user of the RFID reader can be improved.

Embodiment 2. FIG.
FIG. 6 is a perspective view showing a magnetic tape cartridge according to Embodiment 2 of the present invention. In FIG. 6, reference numeral 41 denotes an RFID tag attached to the outer surface portion of the upper wall portion 4. Although FIG. 6 shows a configuration in which the RFID tag 41 is attached to the outer surface portion of the upper wall portion 4, a configuration in which the RFID tag 41 is attached to the inner surface portion of the upper wall portion 4 can also be adopted. Compared with the magnetic tape cartridge according to the first embodiment, the magnetic tape cartridge according to this embodiment has the first RFID tag 13 disposed inside the rear wall 3 and the inner surface or outer surface of the upper wall 4. There is a difference in that the second RFID tag 41 is attached to the part.

  As the RFID tag 13, an RFID tag that operates on radio waves in the UHF band is used as in the first embodiment. As the RFID tag 41, an RFID tag that operates with UHF band radio waves or an RFID tag that operates with short wave radio waves is used. An RFID tag that operates with UHF band radio waves is arranged inside the rear wall 3, and an RFID tag that operates with UHF band is attached to the inner surface or outer surface of the upper wall 4, thereby In contrast, it has directivity in two directions, and the degree of freedom related to the relative position and posture of the RFID reader with respect to the magnetic tape cartridge when reading information from the RFID tag is increased. Can be improved. In addition, an RFID tag that operates with radio waves in the UHF band is arranged inside the rear wall 3, and an RFID tag that operates in a short wave band is attached to the inner surface or outer surface of the upper wall 4, thereby The RFID tag information can be read using either radio waves or short-wave radio waves, so that the flexibility of the management system for managing the magnetic tape cartridge can be improved. Furthermore, even when an RFID tag that operates with radio waves in one frequency band is damaged and becomes unusable, information reading can be continued using an RFID tag that operates with radio waves in the other frequency band. The usable period of the RFID tag can be extended. Needless to say, the magnetic tape cartridge according to the second embodiment also has the same effect as the magnetic tape cartridge according to the first embodiment.

  The magnetic tape cartridge described in the first embodiment and the second embodiment is not intended to limit the present invention, but is disclosed for the purpose of illustration. The technical scope of the present invention is defined by the description of the scope of claims, and various design changes can be made within the technical scope of the invention described in the scope of claims. For example, the above embodiment employs a configuration in which an RFID tag that operates on radio waves in the UHF band is disposed inside the rear wall portion. However, an RFID that operates on radio waves in the short wave band is disposed inside the rear wall portion. It is good also as a structure by which a tag is arrange | positioned.

  Of course, the present invention can be applied to various types of magnetic tape cartridges other than the magnetic tape cartridges stipulated in Japanese Industrial Standards, and further accommodates information storage media such as CDs, MDs, and DVDs. It can be applied to a wide range of cases. These information storage medium accommodation cases usually have a substantially rectangular parallelepiped shape. If the wall portion on the side where the case is opened is the front wall portion, it is conceivable to adopt a configuration in which an RFID tag that operates with radio waves in the UHF band is arranged inside the rear wall portion as in the above embodiment. Thereby, the effect similar to the effect which the magnetic tape cartridge demonstrated in Embodiment 1 show | plays can be acquired. In addition, the first RFID tag that operates with UHF band radio waves is disposed inside the rear wall portion, and the second RFID tag is attached to the inner surface portion or the outer surface portion of the upper wall portion or the bottom wall portion. It is possible. Thereby, the effect similar to the effect which the magnetic tape cartridge demonstrated in Embodiment 2 show | plays can be acquired. In the above embodiment, the configuration in which the band-like RFID tag is arranged inside the rear wall portion is described. However, the RFID tag is arranged by engaging the RFID tag with other components. Various arrangement modes such as a mode of simply supporting and a mode of attaching a part or the whole of the RFID tag to the rear wall portion are included.

  The present invention is mainly applied to magnetic tape cartridges, and can be widely applied to cases that accommodate various information storage media.

It is a perspective view which shows the external appearance of a magnetic tape cartridge. It is a fragmentary perspective view which shows the magnetic tape cartridge by Embodiment 1 of this invention. It is sectional drawing which shows the rear wall part vicinity of a magnetic tape cartridge. It is a top view which shows the RFID tag which operate | moves with the electromagnetic wave of a UHF band. It is a figure which shows the experimental method for measuring a readable distance. It is a perspective view which shows the magnetic tape cartridge by Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front wall part, 2 Side wall part, 3 Rear wall part, 4 Upper wall part, 5 Magnetic tape, 6 Reader block, 7 Write prohibition mechanism, 8 Positioning notch, 11 Center part, 12 Partition part, 13 RFID tag (1st RFID tag), 13a RFID main body part, 13b RFID bent part, 21 base part, 22 antenna, 23 IC chip, 31 antenna, 32 magnetic tape cartridge, 41 RFID tag (second RFID tag)

Claims (6)

A front wall portion having an opening for drawing out the magnetic tape, a rear wall portion facing the front wall portion, an upper wall portion and a bottom facing each other by being connected to the front wall portion and the rear wall portion, respectively. In a magnetic tape cartridge comprising a wall portion and two side wall portions that are respectively connected to the front wall portion, the rear wall portion, the upper wall portion, and the bottom wall portion and face each other.
In order to partition the space in which the magnetic tape is accommodated, the first partition part connected to one of the side wall parts and extending from the one side wall part toward the rear wall part and the other side wall part are connected. And a second partition part extending from the other side wall part toward the rear wall part is formed on the bottom wall part,
A first gap is formed between the first partition and the rear wall, and a second gap is formed between the second partition and the rear wall.
An RFID tag that is partly or entirely band-shaped is disposed inside the rear wall so as to pass through the first gap and the second gap.
2. The magnetic tape cartridge according to claim 1, wherein the RFID tag has two bent portions, and the two bent portions extend along the one side wall portion and the other side wall portion, respectively. The magnetic tape cartridge according to claim 1, wherein the RFID tag operates with UHF radio waves. 3. The magnetic tape cartridge according to claim 2, wherein the antenna length of the RFID tag has a length of one quarter or a half of a wavelength of a radio wave in the UHF band to be used. 2. The label on which the character or character string or the symbol or symbol string indicating that the RFID tag is arranged on the back side is affixed to the outer surface portion of the rear wall portion. The magnetic tape cartridge as described. A front wall portion having an opening for drawing out the magnetic tape, a rear wall portion facing the front wall portion, an upper wall portion and a bottom facing each other by being connected to the front wall portion and the rear wall portion, respectively. In a magnetic tape cartridge comprising a wall portion and two side wall portions that are respectively connected to the front wall portion, the rear wall portion, the upper wall portion, and the bottom wall portion and face each other.
In order to partition the space in which the magnetic tape is accommodated, the first partition part connected to one of the side wall parts and extending from the one side wall part toward the rear wall part and the other side wall part are connected. And a second partition part extending from the other side wall part toward the rear wall part is formed on the bottom wall part,
A first gap is formed between the first partition and the rear wall, and a second gap is formed between the second partition and the rear wall.
A first RFID tag that is partially or entirely band-shaped is disposed inside the rear wall so as to pass through the first gap and the second gap,
The first RFID tag has two bent portions, and the two bent portions extend along the one side wall portion and the other side wall portion, respectively.
A magnetic tape cartridge, wherein a second RFID tag is attached to an inner surface or an outer surface of the upper wall. The first RFID tag operates with UHF band radio waves and the second RFID tag operates with short wave radio waves, or the first RFID tag operates with short wave radio waves and the second The magnetic tape cartridge according to claim 5, wherein the RFID tag operates with radio waves in the UHF band.

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