公开(公告)号：US20240233778A9

公开(公告)日：2024-07-11

申请号：US18405166

申请日：2024-01-05

Applicant: FUJIFILM Corporation

Inventor： Toru NAKAO ,  Tetsuya KANEKO ,  Yoichi AKANO

IPC: G11B27/36

CPC classification number: 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.

公开(公告)号：US20230317106A1

公开(公告)日：2023-10-05

申请号：US18171919

申请日：2023-02-21

Applicant: FUJIFILM Corporation

Inventor： Toru NAKAO ,  Tetsuya KANEKO ,  Yoichi AKANO

IPC: G11B5/55 ,  G11B5/592

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.

公开(公告)号：US20230290379A1

公开(公告)日：2023-09-14

申请号：US18320418

申请日：2023-05-19

Applicant: FUJIFILM CORPORATION

Inventor： Yusuke KANEKO ,  Toru NAKAO ,  Atsushi MUSHA ,  Norihito KASADA

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

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

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：US20230140361A1

公开(公告)日：2023-05-04

申请号：US18048039

申请日：2022-10-20

Applicant: FUJIFILM CORPORATION

Inventor： Kenji NISHIDA ,  Toru NAKAO

IPC: G06K19/077

Abstract: The noncontact communication medium for a recording medium cartridge includes a substrate, an IC chip that is electrically connected to one end and the other end of an antenna coil formed on the substrate and configured to induce power with application of a magnetic field from an outside, and a stress relaxing member that is provided between the IC chip and the substrate.

公开(公告)号：US20230129110A1

公开(公告)日：2023-04-27

申请号：US18145821

申请日：2022-12-22

Applicant: FUJIFILM CORPORATION

Inventor： Toru NAKAO ,  Ren ISHIKAWA

IPC: G11B5/008 ,  G11B25/08

Abstract: Provided is a magnetic tape device including: a magnetic head having a magnetic element that acts on a magnetic layer formed on a front surface of a magnetic tape; and a guide member that is disposed at a position facing the magnetic head via the magnetic tape and guides the magnetic tape to the magnetic head, in which a back surface of the magnetic tape, which is provided on a side opposite to the front surface and is a surface coarser than the front surface, is slid on the guide member.

公开(公告)号：US20230098320A1

公开(公告)日：2023-03-30

申请号：US17950142

申请日：2022-09-22

Applicant: FUJIFILM CORPORATION

Inventor： Toru NAKAO ,  Tetsuya KANEKO ,  Yoichi AKANO

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

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：US20230095712A1

公开(公告)日：2023-03-30

申请号：US17950143

申请日：2022-09-22

Applicant: FUJIFILM CORPORATION

Inventor： Toru NAKAO ,  Tetsuya KANEKO ,  Yoichi AKANO

IPC: G11B5/31 ,  G11B5/008

Abstract: A plurality of gap patterns are formed on a front surface of a substrate along a direction corresponding to a width direction of a magnetic tape. 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. Positions of the plurality of gap patterns are aligned in a longitudinal direction of the magnetic tape. A pulse signal is supplied to each of the plurality of gap patterns with a delay of a predetermined time from one side to the other side in a direction in which the plurality of gap patterns are arranged.

公开(公告)号：US20210065741A1

公开(公告)日：2021-03-04

申请号：US17006917

申请日：2020-08-31

Applicant: FUJIFILM CORPORATION

Inventor： Toru NAKAO

IPC: G11B5/592 ,  G11B5/008 ,  G11B5/55

Abstract: A recording and reproducing apparatus includes: a magnetic head in which a servo band having a servo pattern and a data band having data tracks are alternately arranged along a width direction, the magnetic head including a recording and reproducing element that records or reproduces data with respect to the data track, and at least two servo reproducing elements that read servo patterns adjacent to each other in the width direction of the magnetic tape; a selection unit that selects a servo reproducing element from the servo reproducing elements according to a position of the data track, as a target of recording or reproducing of data in the data band, along the width direction; and a controller that controls positioning of the magnetic head along the width direction by using a result of reading of the servo patterns by the servo reproducing element selected by the selection unit.