公开(公告)号：US20230206945A1

公开(公告)日：2023-06-29

申请号：US18145119

申请日：2022-12-22

Applicant: FUJIFILM Corporation

Inventor： Nagisa YAMASAKI ,  Toru Nakao ,  Atsushi Musha ,  Kento Takishima

IPC: G11B5/53

CPC classification number: G11B5/534 ,  G11B5/535

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 before 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.

公开(公告)号：US12223987B2

公开(公告)日：2025-02-11

申请号：US18145257

申请日：2022-12-22

Applicant: FUJIFILM Corporation

Inventor： Nagisa Yamasaki ,  Toru Nakao ,  Atsushi Musha ,  Kento Takishima

IPC: G11B5/53

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.

公开(公告)号：US12176014B2

公开(公告)日：2024-12-24

申请号：US18400011

申请日：2023-12-29

Applicant: FUJIFILM CORPORATION

Inventor： Toru Nakao ,  Tetsuya Kaneko ,  Yoichi Akano

IPC: G11B5/588 ,  G11B5/008 ,  G11B5/596

Abstract: A first straight line region and a second straight line region of the straight line region pair are inclined in opposite directions with respect to a first imaginary straight line. The first straight line region has a steeper inclined angle with respect to the first imaginary straight line than the second straight line region. Positions of both ends of the first straight line region and positions of both ends of the second straight line region are aligned in a direction corresponding to a width direction of a magnetic tape. A plurality of gap patterns deviate from each other by a predetermined interval in a direction corresponding to a longitudinal direction of the magnetic tape, between the gap patterns adjacent to each other along the direction corresponding to the width direction of the magnetic tape. A substrate is inclined with respect to the first imaginary straight line.

公开(公告)号：US12057148B2

公开(公告)日：2024-08-06

申请号：US18172693

申请日：2023-02-22

Applicant: FUJIFILM Corporation

Inventor： Toru Nakao ,  Tetsuya Kaneko ,  Yoichi Akano

IPC: G11B5/584 ,  G11B5/008 ,  G11B5/56

CPC classification number: G11B5/56 ,  G11B5/00821

Abstract: A magnetic head includes a pair of servo reading elements corresponding to a pair of servo bands adjacent to each other in a width direction. A processor acquires a first signal based on a first result obtained by reading a servo pattern in a first servo band by a first servo reading element included in a pair of servo reading elements, acquires a second signal based on a second result obtained by reading the servo pattern in a second servo band by a second servo reading element included in the pair of servo reading elements, and outputs a deviation amount signal corresponding to a deviation amount in time between the first signal and the second signal.

公开(公告)号：US12027185B2

公开(公告)日：2024-07-02

申请号：US18145539

申请日：2022-12-22

Applicant: FUJIFILM Corporation

Inventor： Yoichi Akano ,  Toru Nakao ,  Tetsuya Kaneko

IPC: G11B27/36 ,  G11B5/008

CPC classification number: G11B27/36 ,  G11B5/00813

Abstract: A detection device includes a processing device and a storage medium. The processing device stores a result of reading a servo pattern by a servo reading element from a magnetic tape in which the servo pattern is recorded in a servo band, in the storage medium as an ideal waveform signal indicating an ideal waveform, acquires a servo band signal which is a result of reading the servo band by the servo reading element, and detects a servo pattern signal indicating the servo pattern by comparing the ideal waveform signal stored in the storage medium with the servo band signal.

公开(公告)号：US11705159B2

公开(公告)日：2023-07-18

申请号：US17591593

申请日：2022-02-02

Applicant: FUJIFILM CORPORATION

Inventor： Yusuke Kaneko ,  Toru Nakao ,  Atsushi Musha ,  Norihito Kasada

IPC: G11B23/04 ,  G11B15/43 ,  G11B15/06

CPC classification number: G11B23/042 ,  G11B15/06 ,  G11B15/43

Abstract: A magnetic tape cartridge includes a case in which a magnetic tape is housed, and an NVM of a cartridge memory provided in the case. The NVM stores cartridge information including an identification ID regarding an allowable range of temperature/humidity in using the magnetic tape, an upper limit of a preservation period of the magnetic tape, and an upper limit of a use frequency of the magnetic tape.

公开(公告)号：US20230169992A1

公开(公告)日：2023-06-01

申请号：US18059185

申请日：2022-11-28

Applicant: FUJIFILM Corporation

Inventor： Tetsuya Kaneko ,  Toru Nakao ,  Yoichi AKANO

IPC: G11B5/008 ,  G11B5/78

CPC classification number: G11B5/00813 ,  G11B5/78

Abstract: A detection device includes a processor. The processor compares a servo band signal, which is a result of reading a servo band in which a servo pattern is recorded from a magnetic tape including the servo band by a servo reading element, with a threshold value to detect a servo pattern signal indicating the servo pattern. The threshold value is determined in accordance with an angle formed by the servo pattern and the servo reading element.

公开(公告)号：US11120832B2

公开(公告)日：2021-09-14

申请号：US17022112

申请日：2020-09-16

Applicant: FUJIFILM CORPORATION

Inventor： Toru Nakao ,  Hodaka Suzuki ,  Yoichi Akano

IPC: G11B20/12 ,  G11B5/008

Abstract: A recording and reproducing device includes: a reading unit that reads production information from a recording medium of a magnetic tape cartridge, the magnetic tape cartridge including a magnetic tape, and the recording medium other than the magnetic tape and on which the production information is recorded, the production information being information regarding the magnetic tape obtained in a production process of the magnetic tape cartridge; and a control unit that performs, as an initialization process of the magnetic tape cartridge, control of recording the production information on the magnetic tape and invalidating the production information in the recording medium.