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JP-7856512-B2 - Tape reels, magnetic tape cartridges, and magnetic tape drives

JP7856512B2JP 7856512 B2JP7856512 B2JP 7856512B2JP-7856512-B2

Inventors

  • 石川 廉

Assignees

  • 富士フイルム株式会社

Dates

Publication Date
20260511
Application Date
20220704

Claims (13)

  1. A cylindrical hub around which the tape is wound, A reinforcing member provided on the inner circumference side of the hub, It has, The reinforcing member is The hub has a shaft member having a longitudinal direction along the central axis direction, and a plurality of annular ribs provided along the longitudinal direction and extending from the outer circumferential surface of the shaft member toward the inner circumferential surface of the hub, The plurality of ribs include a first rib provided in the central region in the longitudinal direction of the tape reel.
  2. The tape reel according to claim 1, wherein the plurality of ribs include a second rib provided in a region other than the central region.
  3. The tape reel according to claim 2, wherein the second rib is provided in the region between the central region and one end of the shaft member and in the region between the central region and the other end of the shaft member, respectively.
  4. The tape reel according to claim 2, wherein the axial stiffness of the first rib is higher than the axial stiffness of the second rib.
  5. The tape reel according to claim 2, wherein a plurality of the first ribs are provided.
  6. The tape reel according to claim 5, wherein the spacing between the first ribs is narrower than the spacing between the second ribs and the first ribs.
  7. The tape reel according to claim 1, wherein the outer edge of the rib is in contact with the inner circumferential surface.
  8. The tape reel according to claim 1, wherein the ribs have a continuous annular shape.
  9. The tape reel according to claim 1, wherein the reinforcing member is press-fitted to the hub.
  10. The tape reel according to claim 1, wherein the reinforcing member is joined to the hub.
  11. The tape reel according to claim 1, wherein the bottom of the hub is provided with a support surface to which a rotating shaft for rotating the tape reel is fixed or attached.
  12. A tape reel according to any one of claims 1 to 11, on which a magnetic tape is wound as the tape, A case in which the magnetic tape and the tape reel are housed, A magnetic tape cartridge equipped with [a specific feature/feature].
  13. A tape reel according to any one of claims 1 to 11, on which a magnetic tape is wound as the tape, A magnetic head reads the magnetic tape on the predetermined path while the magnetic tape is being driven along the predetermined path by a driving mechanism that drives the magnetic tape along the predetermined path, A magnetic tape drive equipped with a magnetic tape drive.

Description

The technology described herein relates to tape reels, magnetic tape cartridges, and magnetic tape drives. Patent Document 1 describes a tape reel assembly for winding and unwinding storage tape, having a hub defining an inner surface and a tape winding surface, at least a portion of the hub being made of plastic, and the tape winding surface having an effective radial modulus greater than 2 GPa. Japanese Patent Publication No. 2005-116163 One embodiment of the technology described herein provides a tape reel, a magnetic tape cartridge, and a magnetic tape drive capable of reducing uneven deformation of the magnetic tape width caused by uneven stress distribution in the magnetic tape wound around a hub. This is an external perspective view showing an example of the schematic configuration of a magnetic tape cartridge according to this embodiment.This is an exploded perspective view showing an example of the schematic configuration of a magnetic tape cartridge according to this embodiment.This is a cross-sectional view showing an example of the schematic configuration of a conventionally known cartridge reel as a comparative example.This is a cross-sectional view showing an example of the schematic configuration of a conventionally known cartridge reel as a comparative example.This is an exploded perspective view showing an example of the schematic configuration of the cartridge reel according to this embodiment.This is a cross-sectional view showing an example of the schematic configuration of a cartridge reel according to this embodiment.This is a cross-sectional view showing an example of the schematic configuration of a cartridge reel according to this embodiment.This is a conceptual diagram showing an example of the hardware configuration of a magnetic tape drive according to this embodiment.This is a cross-sectional view showing an example of the schematic configuration of the machine reel according to this embodiment.This is a cross-sectional view showing an example of the schematic configuration of a modified cartridge reel.This is a cross-sectional view showing an example of the schematic configuration of a modified cartridge reel.This is a cross-sectional view showing an example of the schematic configuration of a modified cartridge reel. First, let's explain the terminology used in the following explanation. NVM stands for "Non-volatile memory." CPU stands for "Central Processing Unit." RAM stands for "Random Access Memory." EEPROM stands for "Electrically Erasable and Programmable Read Only Memory." HDD stands for "Hard Disk Drive." ASIC stands for "Application Specific Integrated Circuit." FPGA stands for "Field-Programmable Gate Array." PLC stands for "Programmable Logic Controller." IC stands for "Integrated Circuit." RFID stands for "Radio Frequency Identifier." UI stands for "User Interface." WAN stands for "Wide Area Network." LAN stands for "Local Area Network." [First Embodiment] An example of the configuration of the magnetic tape cartridge 12 will be described with reference to Figures 1 and 2. For the sake of clarity, in the following description, the loading direction of the magnetic tape cartridge 12 into the magnetic tape drive 70 (see Figure 8) will be indicated by arrow A, the direction of arrow A will be considered the front direction of the magnetic tape cartridge 12, and the side of the magnetic tape cartridge 12 facing forward will be referred to as the front side of the magnetic tape cartridge 12. In the following description of the structure, "front" refers to the front side of the magnetic tape cartridge 12. Furthermore, for the sake of clarity in the following explanation, the direction of arrow B, which is perpendicular to the direction of arrow A, will be referred to as the right direction, and the right side of the magnetic tape cartridge 12 will be referred to as the right side of the magnetic tape cartridge 12. In the following description of the structure, "right" refers to the right side of the magnetic tape cartridge 12. Furthermore, for the sake of clarity in the following explanation, the direction opposite to arrow B will be referred to as the left direction, and the left side of the magnetic tape cartridge 12 will be referred to as the left side of the magnetic tape cartridge 12. In the following description of the structure, "left" refers to the left side of the magnetic tape cartridge 12. Furthermore, for the sake of clarity in the following explanation, arrow C will indicate the direction perpendicular to arrows A and B. Arrow C will be considered the upward direction of the magnetic tape cartridge 12, and the upward side of the magnetic tape cartridge 12 will be referred to as the upper side of the magnetic tape cartridge 12. In the following description of the structure, "upper" refers to the upper side of the magnetic tape cartridge 12. Furthermore, for the sake of clarity in the following explanation, the direction opposite to the forward direction of th