公开(公告)号：US11183206B2

公开(公告)日：2021-11-23

申请号：US17029095

申请日：2020-09-23

Applicant: FUJIFILM CORPORATION

Inventor： Hodaka Suzuki ,  Toru Nakao ,  Yoichi Akano

IPC: G11B5/008 ,  G11B15/06 ,  G11B23/04 ,  G11B23/113 ,  G11B25/06 ,  G11B5/592

Abstract: A magnetic tape cartridge including: a magnetic tape; and a recording medium including a predetermined area for recording defect information, which is information regarding a defect of the magnetic tape detected in a production process of the magnetic tape. A recording device, a recording method, a data recording and reproducing system, and a data recording and reproducing method are also provided.

公开(公告)号：US11551718B2

公开(公告)日：2023-01-10

申请号：US17374006

申请日：2021-07-13

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.

公开(公告)号：US10607644B2

公开(公告)日：2020-03-31

申请号：US16414764

申请日：2019-05-16

Applicant: FUJIFILM CORPORATION

Inventor： Hodaka Suzuki ,  Yoichi Akano

IPC: G11B5/58 ,  G11B5/588 ,  G11B5/84 ,  G11B5/02 ,  G11B5/008

Abstract: A magnetic tape includes: a servo band on which servo patterns are repeatedly formed in a longitudinal direction thereof, each of the servo patterns including a first magnetization region formed to be tilted with respect to a width direction of the servo band by a predetermined angle along the width direction of the servo band, and a second magnetization region not parallel to the first magnetization region along the width direction of the servo band, wherein at least one of the first magnetization region or the second magnetization region is formed by decreasing the number of linear patterns from a predetermined plural number of linear patterns and changing a position of the linear pattern to be removed, in accordance with information that is an embedding target so that the information is embedded.

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.

公开(公告)号：US10600439B2

公开(公告)日：2020-03-24

申请号：US16296214

申请日：2019-03-07

Applicant: FUJIFILM CORPORATION

Inventor： Hodaka Suzuki ,  Yoichi Akano

IPC: G11B5/584 ,  G11B5/65 ,  G11B21/02 ,  G11B5/78 ,  G11B5/714 ,  G11B5/706

Abstract: Provided is a magnetic tape, in which servo patterns, each including a first magnetization region formed to be tilted with respect to a width direction of a servo band by an angle θ along the width direction of the servo band and a second magnetization region not parallel to the first magnetization region along the width direction of the servo band, are repeatedly formed in a longitudinal direction of the servo band, the magnetic tape is used in a recording and reproducing system which uses a reproducing element for reproducing the servo pattern, a width of which satisfies W1≤(1/tan θ)×stripe width T of the servo pattern, and the angle θ is greater than 25° and equal to or smaller than 45°.