Canon Kabushiki Kaisha

Fujifilm Corporation

Kabushiki Kaisha Toshiba

Ricoh Company, Ltd.

Ajinomoto Co., Ltd.

Yamaichi Electronics Co., Ltd.

Yamaichi Electric Co., Ltd.

Subaru Corporation

Nifco Inc.

Toshiba Lighting & Technology Corporation

Toyo Ink Sc Holdings Co., Ltd.

Toyochem Co., Ltd.

Toyo-morton, Ltd.

Mg Company Ltd.

Ajimomoto Co., Inc.

Tetsuya Kaneko

Ichiro Nomura

Toshihiko Takeda

Hidetoshi Suzuki

Norihito Kasada

Eiki Ozawa

Yoshikazu Banno

Toru Nakao

Yoichi Akano

Takeo Tsukamoto

Yoshihiro Yanagisawa

Kohei Nakata

Toshihiko Miyazaki

Masahiko Okunuki

Naoto Nakamura

Seishiro Yoshioka

Kojiro Yokono

Shinya Mishina

Isamu Shimoda

Akira Suzuki

Haruhito Ono

Takashi Ohsawa

Kiyofumi Nagai

Nobuko Kitahara

Mamoru Miyawaki

Kakuji Murakami

Hitoshi Arita

Hideyuki Suzuki

Mitsutoshi Hasegawa

Hisaaki Kawade

Osamu Takamatsu

Masayuki Koyano

Nobutaka Osada

Hiroshi Matsuda

Katsumi Nakagawa

Soichiro Kawakami

Kunihiro Sakai

Shuzo Kaneko

Katsunori Hatanaka

Haruki Kawada

Hiroyasu Nose

Miki Tamura

Toshimitsu Kawase

Akihiko Gotoh

Eigo Kawakami

Hideya Kumomi

Akiko Bannai

Toshihiro Saika

Ihachiro Gofuku

Yoshinori Isobe

Satoshi Itabashi

Atsushi Musha

Masaki Fukaya

Kazuhiro Sando

Yuko Morikawa

Katsuhiko Shinjo

Katsunori Terada

Takao Yonehara

Takeshi Ichikawa

Yasue Sato

Junichi Okamura

Toshiroh Tokuno

Kiyoshi Tanaka

Noriaki Ohguri

Tetsuya Kawakita

Masaru Saeki

Takashi Enomoto

Toshikazu Ohnishi

Takeo Ono

Mitsuaki Seki

Hitoshi Oda

Yusuke Kagawa

Yuji Kasanuki

Akira Shinmi

Nobuo Watanabe

Kou Yoneda

Akira Shimizu

Yutaka Okamoto

Masato Yamanobe

Shinichi Yamashita

Hiroyuki Hayashi

Yoshiyuki Osada

Toru Nakamura

Aoji Isono

Masao Sugata

Yoshihiro Sato

Eisuke Hori

Eiji Yamaguchi

Michio Ito

Hiroaki Toshima

Noritake Suzuki

Yasuyuki Todokoro

Yuta Moriwaki

Kunihiro Yamanaka

Akiko Konishi

Masahito Niibe

Tomohiro Tamai

Toru Oya

Akihiro Takemura

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.

Magnetic head, magnetic tape, magnetic tape cartridge, magnetic tape drive, and magnetic tape reading method

A plurality of servo patterns are recorded in a magnetic tape along a longitudinal direction. The servo pattern is at least one linear magnetization region pair. The linear magnetization region pair includes a first linear magnetization region, which is linearly magnetized, and a second linear magnetization region, which is linearly magnetized. The first linear magnetization region and the second linear magnetization region are inclined in opposite directions with respect to a first imaginary straight line along a width direction of the magnetic tape. The first linear magnetization region has a steeper inclined angle with respect to the first imaginary straight line than the second linear magnetization region.

Magnetic tape, magnetic tape cartridge, servo pattern recording device, magnetic tape drive, magnetic tape system, detection device, inspection device, servo pattern recording method, manufacturing method of magnetic tape, detection method, and inspection method

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.

Servo pattern recording device, magnetic tape, magnetic tape cartridge, magnetic tape drive, magnetic tape system, detection device, servo pattern recording method, and manufacturing method of magnetic tape

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.

Signal processing device, magnetic tape drive, magnetic tape, magnetic tape cartridge, program, signal processing method, and magnetic tape manufacturing method

A magnetic tape cartridge includes a case in which a magnetic tape is accommodated and a storage medium provided in the case. At least one of reading or writing of data is performed by a plurality of magnetic elements, which are linearly disposed, with respect to the magnetic tape pulled out from the case. A disposition direction of the plurality of magnetic elements is tilted toward an entire length direction side of the magnetic tape with respect to a width direction of the magnetic tape. The storage medium stores tilt feature information indicating a feature of tilt of the disposition direction with respect to the width direction.

Magnetic tape cartridge, magnetic tape drive, magnetic tape system, and method of operating magnetic tape drive

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.

Detection device, inspection device, magnetic tape drive, magnetic tape system, detection method, inspection method, and program

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.

Provided are a magnetic recording heading having a magnetic film including a write gap, in which in the write gap, a recording surface-side gap width is narrower than a back surface-side gap width, and the write gap has an opening portion formed by ion beam processing at a gap end portion on a recording surface side, a magnetic recording apparatus including the magnetic recording head, a manufacturing method of the magnetic recording head, and a manufacturing method of a magnetic recording medium having a servo pattern, including forming a servo pattern on the magnetic recording medium by the magnetic recording head.

Magnetic recording head and manufacturing method thereof, magnetic recording apparatus, and manufacturing method of magnetic recording medium

A magnetic tape including a timing-based servo pattern, in which the magnetic tape is used in a magnetic tape device in which a total number of data tracks is 8705 or more in conversion of a magnetic tape having a width of ½ inches, and ΔPNL of the timing-based servo pattern is 10.0% or less of a track pitch. A magnetic tape cartridge including the magnetic tape, and a magnetic tape device including a magnetic tape, in which a total number of data tracks is 8705 or more in conversion of a magnetic tape having a width of ½ inches, the magnetic tape includes a timing-based servo pattern, and ΔPNL of the timing-based servo pattern is 10.0% or less of a track pitch are provided. The ΔPNL indicates an amount of deviation of the timing-based servo pattern from linearity.

Magnetic tape, magnetic tape cartridge, and magnetic tape device

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.

Detection device, inspection device, magnetic tape cartridge, magnetic tape, magnetic tape drive, magnetic tape system, detection method, inspection method, and program

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.

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.

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.

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Kanagawa, Japan

Tetsuya Kaneko