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11.发明申请公开(公告)号：US20210098016A1
公开(公告)日：2021-04-01
申请号：US17029095
申请日：2020-09-23
Applicant: FUJIFILM CORPORATION
Inventor： Hodaka SUZUKI , Toru NAKAO , Yoichi AKANO
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.
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公开(公告)号：US20250140289A1
公开(公告)日：2025-05-01
申请号：US19008064
申请日：2025-01-02
Applicant: FUJIFILM Corporation
Inventor： Tetsuya KANEKO , Toru NAKAO
Abstract: A servo pattern recording head includes: a plurality of head cores that are magnetically separated from each other; and a plurality of gap patterns that are formed on a front surface of each of the plurality of head cores and that are used for recording a plurality of servo patterns in a width direction of a magnetic tape by applying a magnetic field to the magnetic tape in response to a pulse current, in which the plurality of gap patterns are formed on the front surface along a direction corresponding to the width direction, and the plurality of gap patterns deviate from each other at 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.
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公开(公告)号：US20240379120A1
公开(公告)日：2024-11-14
申请号：US18783932
申请日：2024-07-25
Applicant: FUJIFILM Corporation
Inventor： Tetsuya KANEKO , Toru NAKAO , Yoichi AKANO
Abstract: A detection device includes a processing device and a storage medium. The processing device stores a result of reading a reference servo pattern by a servo reading element in the storage medium as an ideal waveform signal, acquires a servo band signal which is a result of reading a servo pattern recorded in a servo band by the servo reading element, and detects a servo pattern signal which is a result of reading the servo pattern by the servo reading element by comparing the ideal waveform signal with the servo band signal. The reference servo pattern is recorded between a BOT section and an EOT section in a longitudinal direction of the magnetic tape.
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公开(公告)号：US20240379118A1
公开(公告)日：2024-11-14
申请号：US18779785
申请日：2024-07-22
Applicant: FUJIFILM Corporation
Inventor： Toru NAKAO , Norihito KASADA , Tetsuya KANEKO , Atsushi MUSHA
Abstract: Provided is a magnetic tape cartridge including: a case in which a magnetic tape on which a plurality of servo bands are formed is accommodated; and a storage medium provided in the case, in which the plurality of servo bands are formed at positions spaced apart from each other in a width direction of the magnetic tape along an entire length direction of the magnetic tape, and the storage medium stores pitch information capable of specifying a pitch in the width direction between the plurality of servo bands and distance information capable of specifying a distance between a plurality of servo reading elements that have read the plurality of servo bands.
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公开(公告)号：US20240144968A1
公开(公告)日：2024-05-02
申请号：US18400011
申请日：2023-12-29
Applicant: FUJIFILM CORPORATION
Inventor： Toru NAKAO , Tetsuya KANEKO , Yoichi AKANO
CPC classification number: G11B5/588 , G11B5/00882 , G11B5/59638
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.
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Patent Agency Ranking
公开(公告)号：US20230206950A1
公开(公告)日：2023-06-29
申请号：US18145088
申请日：2022-12-22
Applicant: FUJIFILM Corporation
Inventor： Tetsuya KANEKO , Toru NAKAO , Yoichi AKANO
CPC classification number: G11B5/59688 , G11B5/584
Abstract: A detection device includes a processing device and a storage medium. The processing device stores a result of reading a reference servo pattern by a servo reading element in the storage medium as an ideal waveform signal, acquires a servo band signal which is a result of reading a servo pattern recorded in a servo band by the servo reading element, and detects a servo pattern signal which is a result of reading the servo pattern by the servo reading element by comparing the ideal waveform signal with the servo band signal. The reference servo pattern is recorded between a BOT section and an EOT section in a longitudinal direction of the magnetic tape.
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公开(公告)号：US20230139005A1
公开(公告)日：2023-05-04
申请号：US18050231
申请日：2022-10-27
Applicant: FUJIFILM Corporation
Inventor： Toru NAKAO , Tetsuya Kaneko , Yoichi Akano
IPC: G11B27/36
Abstract: A detection device includes a processing device and a storage medium. An ideal waveform signal indicating an ideal waveform of a servo pattern signal which is a result of reading a servo pattern recorded in a servo band of a magnetic tape by a servo reading element is stored in advance in the storage medium. The processing device acquires a servo band signal which is a result of reading the servo band by the servo reading element, and detects the servo pattern signal by comparing the servo band signal with the ideal waveform signal.
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公开(公告)号：US20230065359A1
公开(公告)日：2023-03-02
申请号：US17822803
申请日：2022-08-29
Applicant: FUJIFILM CORPORATION
Inventor： Junichi NAKAMIGAWA , Yasushi KOMORI , Yusuke KANEKO , Tadashi KIRA , Norihito KASADA , Toru NAKAO
Abstract: A magnetic tape cartridge includes a case that accommodates a magnetic tape on which a plurality of servo bands and a plurality of data bands are formed, servo patterns being recorded in the servo bands, and a memory provided in the case. The memory stores servo pattern interval-related information related to a servo pattern interval determined for each of the plurality of data bands included in the magnetic tape. The servo pattern interval is commonly used for a plurality of division areas obtained by dividing the data band in a width direction of the magnetic tape, and is a representative interval between a first servo pattern and a second servo pattern.
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公开(公告)号：US20220254375A1
公开(公告)日：2022-08-11
申请号：US17591593
申请日：2022-02-02
Applicant: FUJIFILM CORPORATION
Inventor： Yusuke KANEKO , Toru NAKAO , Atsushi MUSHA , Norihito KASADA
IPC: G11B5/78
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.
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20.发明公开公开(公告)号：US20240363142A1
公开(公告)日：2024-10-31
申请号：US18768256
申请日：2024-07-10
Applicant: FUJIFILM Corporation
Inventor： Toru NAKAO , Tetsuya KANEKO , Yoichi AKANO
CPC classification number: G11B5/5508 , G11B5/5928
Abstract: A magnetic head includes a first servo reading element pair, a second servo reading element pair, and a plurality of magnetic elements. The first servo reading element pair consists of a first servo reading element and a second servo reading element, the second servo reading element pair consists of a third servo reading element and a fourth servo reading element, the first servo reading element and the third servo reading element are disposed on one end side of the plurality of magnetic elements and read one servo band of the pair of servo bands, and the second servo reading element and the fourth servo reading element are disposed on the other end side of the plurality of magnetic elements and read the other servo band of the pair of servo bands.
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