Magnetic tape cartridge, magnetic tape drive, memory, magnetic tape, magnetic tape system, and operation method of magnetic tape drive

Patent metadata

Field	Value
Publication number	US-12223987-B2
Application number	US-202218145257-A
Country	US
Kind code	B2
Filing date	Dec 22, 2022
Priority date	Dec 24, 2021
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

A magnetic tape cartridge includes a magnetic tape, and a storage medium in which information on the magnetic tape is stored. The magnetic tape has a recording surface. Data is recorded in the recording surface by a magnetic head in a state in which the magnetic tape is made to travel. The magnetic head is disposed at an inclined posture with respect to a width direction of the magnetic tape along the recording surface. Angle adjustment information obtained at a data recording timing which is a timing at which the data is recorded in the recording surface is stored in the storage medium. The angle adjustment information is information for adjusting an angle at which the magnetic head is inclined with respect to the width direction along the recording surface.

First claim

What is claimed is:

1. A magnetic tape cartridge comprising:
a magnetic tape; and
a storage medium in which information on the magnetic tape is stored,
wherein the magnetic tape has a recording surface, at which data is recorded by a magnetic head in a state in which the magnetic tape is made to travel,
wherein angle adjustment information is stored in the storage medium,
wherein the angle adjustment information is information for adjusting an angle at which the magnetic head is inclined with respect to a width direction along the recording surface at a data recording timing, which is a timing at which the data is recorded at the recording surface, and
wherein the storage medium is a medium including a part of the magnetic tape.

2. The magnetic tape cartridge according to claim 1 ,
wherein the angle adjustment information includes width correspondence information corresponding to a width of the magnetic tape, and
the width correspondence information is information acquired in a state in which the magnetic tape is made to travel while the data is recorded in the recording surface.

3. The magnetic tape cartridge according to claim 2 ,
wherein the width correspondence information is acquired at a plurality of points of the magnetic tape in a total length direction of the magnetic tape.

4. The magnetic tape cartridge according to claim 1 ,
wherein the angle adjustment information includes first environment information for specifying an environment.

5. The magnetic tape cartridge according to claim 4 ,
wherein the first environment information is information including at least one of temperature information that indicates a temperature or humidity information that indicates humidity.

6. The magnetic tape cartridge according to claim 1 ,
wherein the angle adjustment information includes angle information that indicates an angle of the magnetic head being inclined with respect to the width direction along the recording surface.

7. The magnetic tape cartridge according to claim 1 ,
wherein the angle adjustment information includes physical feature information that indicates a physical feature of the magnetic tape.

8. The magnetic tape cartridge according to claim 7 ,
wherein the physical feature includes at least one of a thickness of the magnetic tape, a thickness of a magnetic layer of the magnetic tape, a friction coefficient of a front surface of the magnetic tape, a friction coefficient of a back surface of the magnetic tape, a temperature expansion coefficient of the magnetic tape, a humidity expansion coefficient of the magnetic tape, a Poisson's ratio of the magnetic tape, or a substrate of the magnetic tape.

9. A magnetic tape drive comprising:
a processor that is configured to execute processing for a magnetic tape cartridge; and
an angle adjustment mechanism that is configured to adjust an angle of a magnetic head by applying power to the magnetic head,
wherein the magnetic tape cartridge comprises:
a magnetic tape, and
a storage medium in which information on the magnetic tape is stored,

wherein the magnetic tape has a recording surface, at which data is recorded by the magnetic head in a state in which the magnetic tape is made to travel,
wherein angle adjustment information is stored in the storage medium,
wherein the angle adjustment information is information for adjusting the angle at which the magnetic head is inclined with respect to a width direction along the recording surface at a data recording timing, which is a timing at which the data is recorded at the recording surface, and
wherein the storage medium is a medium including a part of the magnetic tape, and
wherein the processor is configured to:
acquire the angle adjustment information from the part of the magnetic tape, and
cause the angle adjustment mechanism to adjust the angle based on the angle adjustment information.

10. The magnetic tape drive according to claim 9 ,
wherein the magnetic tape includes a servo band,
the magnetic head includes a servo reading element, and
the processor is configured to match a positional relationship between the servo band and the servo reading element at the data recording timing with a positional relationship between the servo band and the servo reading element at a first data reading timing which is a timing at which the data is read from the recording surface by causing the angle adjustment mechanism to adjust the angle based on the angle adjustment information.

11. The magnetic tape drive according to claim 9 ,
wherein the magnetic head is configured to read the data from the recording surface,
the angle adjustment information includes second environment information for specifying an environment, and
the processor is configured to:
acquire third environment information for specifying the environment at a timing at which the magnetic head reads the data from the recording surface, and
cause the angle adjustment mechanism to adjust the angle based on a degree of difference between the second environment information and the third environment information.

12. The magnetic tape drive according to claim 9 ,
wherein the processor is configured to:
acquire fourth environment information for specifying an environment at a first timing at which the data is recorded in the recording surface,
acquire fifth environment information for specifying the environment at a second timing at which the data is recorded in the recording surface, the second timing being different from the first timing, and
cause the angle adjustment mechanism to adjust the angle based on a degree of difference between the fourth environment information and the fifth environment information.

13. The magnetic tape drive according to claim 12 ,
wherein the second timing is a timing at which the data is updated by performing overwriting to the data recorded in the recording surface at the first timing and/or a timing at which new data is added to the recording surface in which the data is recorded at the first timing.

14. A magnetic tape system comprising:
a magnetic tape cartridge; and,
a magnetic tape drive including a processor that is configured to execute processing for a magnetic tape and an angle adjustment mechanism that adjusts an angle of a magnetic head by applying power to the magnetic head,
wherein the magnetic tape cartridge comprises:
a magnetic tape, and
a storage medium in which information on the magnetic tape is stored,

wherein the magnetic tape has a recording surface, at which data is recorded by the magnetic head in a state in which the magnetic tape is made to travel,
wherein angle adjustment information is stored in the storage medium,
wherein the angle adjustment information is information for adjusting the angle at which the magnetic head is inclined with respect to a width direction along the recording surface at a data recording timing, which is a timing at which the data is recorded at the recording surface, and
wherein the storage medium is a medium including a part of the magnetic tape, and
wherein the processor is further configured to:
acquires the angle adjustment information from the part of the magnetic tape, and
causes the angle adjustment mechanism to adjust the angle based on the angle adjustment information.

15. An operation method of a magnetic tape drive, the method comprising:
acquiring angle adjustment information from a storage medium included in a magnetic tape cartridge; and
causing an angle adjustment mechanism to adjust an angle of a magnetic head based on the angle adjustment information,
wherein the magnetic t

Assignees

• Fujifilm Corp

Inventors

• Yamasaki Nagisa
• Nakao Toru
• Musha Atsushi
• Takishima Kento

Classifications

• G11B5/535

  perpendicular to the direction of movement of the tape, e.g. for longitudinal scanning · CPC title

• G11B21/103

  on tapes · CPC title

• G11B15/07

  on containers · CPC title

• G11B5/56

  with provision for moving the head {support} for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering ({G11B5/52,} G11B5/54, G11B5/58 take precedence) · CPC title

• G11B5/4893

  relative to moving tape · CPC title