# US 12,014,756 B2 · Tape reel, magnetic tape cartridge, and magnetic tape drive

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- Number: US 12,014,756 B2
- Document ID: US12014756B2
- Status: Granted
- Kind: B2
- Application number: 18/341,769
- Filed: 2023-06-27
- Published: 2024-01-04
- Granted: 2024-06-18
- Earliest claimed: 2022-07-04
- Assignees: FUJIFILM Corporation
- Applicants: Fujifilm Corporation
- Inventors: Ren Ishikawa
- Web page: https://patentgrep.com/patent/US12014756B2

## CPC

- G11B 5/5508: {Control circuits therefor (G11B5/5513 takes precedence)}
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

A tape reel includes a hub that has a cylindrical shape and around which a tape is wound, and a reinforcing member provided on an inner peripheral side of the hub, in which the reinforcing member includes a shaft member having a longitudinal direction along a central axis direction of the hub, and a plurality of ribs that are provided along the longitudinal direction and have an annular shape that extends from an outer peripheral surface of the shaft member toward an inner peripheral surface of the hub, and the plurality of ribs include a first rib provided in a central region in the longitudinal direction.

## Claims

### Claim 1

A tape reel comprising:
a hub that has a cylindrical shape and around which a tape is wound; and
a reinforcing member provided on an inner peripheral side of the hub,
wherein the reinforcing member includes a shaft member having a longitudinal direction along a central axis direction of the hub, and a plurality of ribs that are provided along the longitudinal direction and have an annular shape that extends from an outer peripheral surface of the shaft member toward an inner peripheral surface of the hub, and
the plurality of ribs include a first rib provided in a central region in the longitudinal direction.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 2)

The tape reel according to claim 2,
wherein the second rib is provided in each of a region between the central region and one end of the shaft member and a region between the central region and the other end of the shaft member.

### Claim 4 (depends on 2)

The tape reel according to claim 2,
wherein axial rigidity of the first rib is higher than axial rigidity of the second rib.

### Claim 5 (depends on 2)

The tape reel according to claim 2,
wherein a plurality of the first ribs are provided.

### Claim 6 (depends on 5)

The tape reel according to claim 5,
wherein an interval between the first ribs is narrower than an interval between the second rib and the first rib.

### Claim 7 (depends on 1)

The tape reel according to claim 1,
wherein an outer edge portion of the rib abuts against the inner peripheral surface.

### Claim 8 (depends on 1)

The tape reel according to claim 1,
wherein the rib has a continuous annular shape.

### Claim 9 (depends on 1)

The tape reel according to claim 1,
wherein the reinforcing member is press-fitted into the hub.

### Claim 10 (depends on 1)

The tape reel according to claim 1,
wherein the reinforcing member is bonded to the hub.

### Claim 11 (depends on 1)

The tape reel according to claim 1,
wherein a support surface on which a rotation shaft that rotates the tape reel is fixed or attached is provided on a bottom portion of the hub.

### Claim 12 (depends on 1)

A magnetic tape cartridge comprising:
the tape reel according to claim 1 around which a magnetic tape is wound as the tape; and
a case in which the magnetic tape and the tape reel are accommodated.

### Claim 13 (depends on 1)

A magnetic tape drive comprising:
the tape reel according to claim 1 around which a magnetic tape is wound as the tape; and
a magnetic head that reads the magnetic tape on a predetermined path in a state in which the magnetic tape is caused to travel by a travel mechanism that causes the magnetic tape to travel along the predetermined path.