Abstract: A magnetic tape reel that has a plurality of gear teeth capable of engaging with a plurality of engagement gear teeth provided with a reel engaging portion of a recording and reproducing apparatus and upon which magnetic tape can be wound, the magnetic tape reel comprising: a hub portion including a cylindrical portion upon which the magnetic tape can be wound and the plurality of gear teeth; and a positioning mark capable of being detected using a contactless detector, the positioning mark being provided for aligning a specific gear tooth A from the plurality of gear teeth with a specific engagement gear tooth B from the plurality of engagement gear teeth.

Abstract: A tape cartridge includes a case, a magnetic tape stored in the case, and a write protect structure for blocking information recording onto the magnetic tape, in which the write protect structure includes, for example, a slidable write protect member and a retention member (e.g., a guide wall) capable of retaining the write protect member in a specified position, and the retention member is capable of reversibly retaining the write protect member at least in a first position and a second position and irreversibly retaining the write protect member in a third position.

Abstract: A tape cartridge includes a case having a first through-hole and a second through-hole in the bottom of a first container, a reel disposed within the case and having a cylindrical hub portion with a bottom, a tape wound around the hub portion such that the tape can be fed out, and a reel lock mechanism that allows the reel to be immovably supported. The reel lock mechanism includes an interposing member that can move vertically in the thickness direction of the case, and a support member. The support member includes a first pedestal portion that, in a state in which the reel has been put in contact with the second container and the interposing member has been put in contact with the reel, is positioned immediately below the interposing member and thus immovably supports the interposing member; and an operating portion that is disposed in the first through-hole and allows, with a predetermined operation, support of the interposing member and release of support of the interposing member.

Abstract: A tape cartridge according to the present invention includes a case, a reel disposed in the case, a tape that can be wound around the reel in such a manner as to be fed out freely, and a guide member for tape guidance disposed in the case. The guide member is supported by a support member, which is held at a predetermined position inside the case and supported by the reel without interfering with a rotation of the reel.

Abstract: A recording medium built-in cartridge of the present invention includes: a case; a recording medium housed in the case; and at least one humidity control member disposed in the case and including at least one humidity control material that absorbs moisture in the case when a humidity in the case is a first humidity or higher and emits the moisture to the case when the humidity in the case is a second humidity or lower, the second humidity being lower than the first humidity.

Abstract: A magnetic tape reel that has a plurality of gear teeth capable of engaging with a plurality of engagement gear teeth provided with a reel engaging portion of a recording and reproducing apparatus and upon which magnetic tape can be wound, the magnetic tape reel comprising: a hub portion including a cylindrical portion upon which the magnetic tape can be wound and the plurality of gear teeth; and a positioning mark capable of being detected using a contactless detector, the positioning mark being provided for aligning a specific gear tooth A from the plurality of gear teeth with a specific engagement gear tooth B from the plurality of engagement gear teeth.

Abstract: A magnetic tape reel that has a plurality of gear teeth capable of engaging with a plurality of engagement gear teeth provided with a reel engaging portion of a recording and reproducing apparatus and upon which magnetic tape can be wound, comprising: a hub portion including a cylindrical portion upon which the magnetic tape can be wound and the plurality of gear teeth; and a positioning portion composed of at least one of a recess and a protrusion and provided for aligning a specific gear tooth from the plurality of gear teeth with a specific engagement gear tooth from the plurality of engagement gear teeth.

Abstract: A tape cartridge includes a case, a magnetic tape stored in the case, a movable member slidably or movably mounted on the case and having a display portion visible from an outside of the case, a plurality of management information sets about the tape cartridge are displayed on the display portion, and a plurality of the information sets include one or more information sets different from each other.

Abstract: A tape cartridge according to the present invention includes a case, a reel disposed in the case, a tape that can be wound around the reel in such a manner as to be fed out freely, and a guide member for tape guidance disposed in the case. The guide member is supported by a support member, which is held at a predetermined position inside the case and supported by the reel without interfering with a rotation of the reel.

Abstract: There is provided a magnetic tape cartridge, including a cartridge (1) composed of a top cartridge (2) and a bottom cartridge (3), a reel (5) rotatably disposed in the cartridge (1), and a magnetic tape (4) wound onto the reel (5), in which a width (w) of the magnetic tape (4) is over 12.65 mm, a thickness (h) of the cartridge (1) is 32 mm or less, and the width (w) of the magnetic tape is 60% to 90% of the thickness (h) of the cartridge (1).

Abstract: A tape reel according to the present invention includes: a disk-shaped first flange; a cylindrical hub; and a disk-shaped second flange. The first flange and the second flange extending in a radial direction from an outer periphery of the hub. At least one flange selected from the first flange and the second flange is joined to the hub with an injection molding resin.

Abstract: A tape cartridge includes a case having a first through-hole and a second through-hole in the bottom of a first container, a reel disposed within the case and having a cylindrical hub portion with a bottom, a tape wound around the hub portion such that the tape can be fed out, and a reel lock mechanism that allows the reel to be immovably supported. The reel lock mechanism includes an interposing member that can move vertically in the thickness direction of the case, and a support member. The support member includes a first pedestal portion that, in a state in which the reel has been put in contact with the second container and the interposing member has been put in contact with the reel, is positioned immediately below the interposing member and thus immovably supports the interposing member; and an operating portion that is disposed in the first through-hole and allows, with a predetermined operation, support of the interposing member and release of support of the interposing member.

Abstract: A tape reel according to the present invention includes: a disk-shaped first flange; a cylindrical hub; and a disk-shaped second flange. The first flange and the second flange extend in a radial direction from an outer periphery of the hub. At least one flange selected from the first flange and the second flange is joined to the hub at a joint portion. At least in the joint portion, the flange and the hub are formed of different materials, and the different materials are an infrared absorbing material and an infrared transmitting material.

Abstract: A tape reel according to the present invention includes: a disk-shape first flange having an opening in its central portion; a disk-shape second age having an opening in its central portion; and a cylindrical hub that includes, on an outer periphery thereof, a first pedestal for receiving the first flange and a second pedestal for receiving the second flange. The first flange and the second flange are joined to the first and second pedestals of the hub, respectively, and extend in a radial direction from the outer periphery of the hub. When viewed along a direction of a rotation axis of the reel, an outer periphery of the first pedestal and an outer periphery of the second pedestal are on circumferences of different concentric circles, and an upper surface of the first pedestal and an upper surface of the second pedestal face the same direction.

Abstract: A recording medium built-in cartridge of the present invention includes: a case; a recording medium housed in the case; and at least one humidity control member disposed in the case and including at least one humidity control material that absorbs moisture in the case when a humidity in the case is a first humidity or higher and emits the moisture to the case when the humidity in the case is a second humidity or lower, the second humidity being lower than the first humidity.

Abstract: A housing case for a recording medium built-in cartridge of the present invention is for housing the recording medium built-in cartridge having an air vent. The housing case includes: a housing case body including a housing part and a lid part for opening and closing the housing part; and at least one humidity control member disposed in the housing case body and comprising at least one humidity control material that absorbs moisture in the housing case body when a humidity in the housing case body is a first humidity or higher and emits the moisture to the housing case body when the humidity in the housing case body is a second humidity or lower, the second humidity being lower than the first humidity.

Abstract: A tape cartridge includes a case, a magnetic tape stored in the case, a movable member slidably or movably mounted on the case and having a display portion visible from an outside of the case, a plurality of management information sets about the tape cartridge are displayed on the display portion, and a plurality of the information sets include one or more information sets different from each other.

Abstract: A tape cartridge includes a case, a magnetic tape stored in the case, and a write protect structure for blocking information recording onto the magnetic tape, in which the write protect structure includes, for example, a slidable write protect member and a retention member (e.g., a guide wall) capable of retaining the write protect member in a specified position, and the retention member is capable of reversibly retaining the write protect member at least in a first position and a second position and irreversibly retaining the write protect member in a third position.

Abstract: A tape cartridge in which adverse influences on windability attributed to at least one cause selected from entrapment of entrained air, vibration of tapes and flipping of tapes are suppressed is provided. The tape cartridge is composed of a case, a reel disposed inside the case, a band-like tape which can be wound onto the reel in a feedable way, a pressing member (e.g., touch roller) for pressing an unwound portion of the tape to a tape roll including a wound portion of the tape and the reel at a contact start point between the unwound portion and the tape roll during winding of the tape, and a position adjustment member for adjusting a position of the pressing member in conformity to changes in diameter of the tape roll while supporting the pressing member inside the case.

Abstract: There is provided a magnetic tape cartridge, including a cartridge (1) composed of a top cartridge (2) and a bottom cartridge (3), a reel (5) rotatably disposed in the cartridge (1), and a magnetic tape (4) wound onto the reel (5), in which a width (w) of the magnetic tape (4) is over 12.65 mm, a thickness (h) of the cartridge (1) is 32 mm or less, and the width (w) of the magnetic tape is 60% to 90% of the thickness (h) of the cartridge (1).