Kabushiki Kaisha Toshiba

Showa Denko K.k.

Takara Co., Ltd.

Kabusihki Kaisha Toshiba

Masatoshi Sakurai

Yoshiyuki Kamata

Kaori Kimura

Akira Kikitsu

Satoshi Shirotori

Seiji Morita

Katsuyuki Naito

Yousuke Isowaki

Kazuto Kashiwagi

Shinobu Sugimura

Kazuyo Umezawa

Hiroyuki Hieda

Takuya Shimada

Masahiro Oka

Takeshi Okino

Koji Asakawa

Takeshi Iwasaki

Toshiro Hiraoka

Makoto Asakura

Akihiro Itakura

Akiko Yuzawa

Akihiko Takeo

Akira Watanabe

Naoki Tagami

Naoko Kihara

Haruhiko Izumi

Minoru Yonezawa

Yasuta Satoh

Ryoichi Takahashi

Yasuyuki Moriyama

Hiroyuki Hyodo

Yukihiro Asami

Hatsuo Ohkoshi

Hideaki Fukuzawa

Takeshi Saito

Hiroaki Nakamura

Yoshihiko Fuji

Michiko Hara

Yoshihiro Higashi

Soichi Oikawa

Hideo Sado

Yuji Sakai

Keiichiro Yusu

Yuuzo Kamiguchi

Kazutaka Takizawa

Maki Yonetsu

Kazuaki Okamoto

Akihiro Horiguchi

Ryosuke Yamamoto

Hiroyasu Sumino

Kazuhito Shimomura

Katsuya Sugawara

Kenji Otsu

Masayuki Kii

Masahiro Kanamaru

Ryouichi Takahashi

Takayuki Yamamoto

Kazuyo Morita

Yosuke Isowaki

According to one embodiment, a pressure sensor includes: a base body; a sensor section; and a processing circuit. The sensor section includes: a transducing thin film; a first strain sensing element; and a second strain sensing element. The transducing thin film has a film surface and is flexible. The processing circuit is configured to output as an output signal at least one of a first signal obtained from the first strain sensing element upon application of external pressure to the transducing thin film and a second signal obtained from the second strain sensing element upon application of the external pressure to the transducing thin film.

Pressure sensor, microphone, and acoustic processing system

According to one embodiment, a magnetic recording medium is formed by performing gas ion irradiation by using a magnetism deactivating gas on a stack including a perpendicular magnetic recording layer, an Ru nonmagnetic underlayer containing a magnetism deactivating element selected from chromium, titanium, and silicon, and a nonmagnetic substrate. Before gas ion irradiation, the perpendicular magnetic recording layer contains platinum and at least one of iron and cobalt. Gas ion irradiation is performed using nitrogen gas alone or a gas mixture of nitrogen gas and at least one gas selected from the group consisting of helium, hydrogen, and BH.

Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproduction apparatus

According to an embodiment, a light deflecting element includes a dielectric body, a first electrode, and a second electrode. The second electrode is configured to sandwich the dielectric body with the first electrode so as to apply a voltage to the dielectric body. The second electrode includes orthogonal portions that are substantially orthogonal to an incident direction of a light beam passing through the dielectric body, parallel portions that are substantially parallel to the incident direction of the light beam. The orthogonal portions and the parallel portions are formed in an alternate manner on the light beam incident side of the dielectric body. The second electrode includes a linear sloping portion that slopes in a direction toward intersection with the incident direction of the light beam. The orthogonal portions, the parallel portions, and the linear sloping portion are formed integrally.

Light deflecting element

According to one embodiment, a magnetic recording medium includes: a data area on which a plurality of first magnetic dots are arranged at predetermined positions to record information; a servo area on which a plurality of second magnetic dots for specifying the positions of said plurality of first magnetic dots are arranged at predetermined positions; and servo frames configured so that a frequency of said servo frames is 2N per circumference of said medium having a radius, that said servo frames are radially discontinuous, and that said servo frame and a space-area, on which no servo frames exist, are alternately radially arranged at a cycle W.

Magnetic recording medium and magnetic recording apparatus

According to one embodiment, an ultraviolet curing curable resin material for pattern transfer is provided. The resin contains isobornyl acrylate, an acrylate having a fluorene skeleton, a polyfunctional acrylate, and a polymerization initiator.

Ultraviolet-curable resin material for pattern transfer and magnetic recording medium manufacturing method using the same

According to one embodiment, there is provided a magnetic recording medium manufacturing method including forming a resist layer on a magnetic recording layer, patterning the resist layer, forming a magnetic pattern by performing ion implantation through the resist layer, partially modifying the surface of the magnetic recording layer, removing the resist, applying a self-organization material to the surface of the magnetic recording layer and forming a dotted mask pattern, and patterning the magnetic recording layer.

Magnetic recording medium manufacturing method

According to one embodiment, there is provided a magnetic recording apparatus including a head slider including read and write elements, and a magnetic recording medium including magnetically recordable recording tracks with a width L, a wide land track with a width Llarger than the width Lof the recording track, and non-recording sections with a width Geach provided between adjacent recording tracks. The width Lof the recording track is smaller than a bottom read width BRW of the read and write elements, and the width Lof the wide land track is larger than the bottom read width BRW of the read and write elements.

Magnetic recording apparatus having variable-width tracks and method of testing same

According to one embodiment, a stamper manufacturing method comprises electroless plating by using a master includes a substrate, a conductive underlayer formed on the substrate and having catalytic activity, projecting patterns having no catalytic activity and partially formed on a surface of the conductive underlayer having catalytic activity, and regions in which the conductive underlayer having catalytic activity is exposed between the projecting patterns to deposit selectively an amorphous conductive layer between the projecting patterns and in the regions in which the conductive underlayer is exposed, and forming stamper projections, electroplating on the stamper projections includes the projecting patterns and the amorphous conductive layer by using the amorphous conductive layer and the conductive underlayer as electrodes to form a stamper main body made of a crystalline metal, and releasing a stamper includes the stamper projections and the stamper main body from the master.

Stamper and method of manufacturing the same

According to one embodiment, a bit patterned medium includes a substrate, and a magnetic recording layer disposed above the substrate and including patterns of protrusions. Each of the protrusions contains a plurality of crystal grains. An average distance between the crystal grains is 0.5 to 3.0 nm in each of the protrusions. The protrusions include first protrusions each having a length of 1 &#x3bc;m or more in a radial direction of the medium and second protrusions each having a length in the radial direction shorter than the length of the first protrusion in the radial direction. Each of the first protrusions has a nucleation field Hn for magnetization reversal and a coercive force Hc satisfying the inequalities, Hn&#x2267;1.5 kOe and 0.5 kOe&#x2266;Hc&#x2212;Hn&#x2266;1.5 kOe.

Magnetic recording medium

A manufacturing method of a magnetic recording medium according to one embodiment includes forming a mask layer having a pattern regularly arranged in a longitudinal direction on a magnetic recording medium containing a substrate and a magnetic recording layer, forming a recording portion having a magnetic pattern and a non-recording portion by patterning the magnetic recording layer, and submitting the mask layer to a peeling liquid to peel the mask layer. The mask layer contains a lamination layer of a lift-off layer, a first hard mask, and a second hard mask. The second hard mask is formed of a material that is different from the material of the first hard disk and the material is dissolvable in the same peeling liquid as the peeling liquid that dissolves the lift-off layer.

Manufacturing method of magnetic recording medium

According to one embodiment, a method of manufacturing a patterned medium includes depositing a magnetic recording layer and applying an ultraviolet curable resin on both surfaces of a medium substrate, pressing a first resin stamper and a second resin stamper each including patterns of recesses and protrusions, corresponding to a patterned medium, against both surfaces of the medium substrate in such a manner that a direction from a center of the medium substrate toward a center of the first resin stamper is off-oriented from a direction from the center of the medium substrate toward a center of the second resin stamper to imprint the patterns of recesses and protrusions on the ultraviolet curable resin, and irradiating the ultraviolet curable resin with an ultraviolet ray through each of the first and second resin stampers to cure the ultraviolet curable resin.

Patterned medium and method of manufacturing the same

According to one embodiment, a magnetic recording apparatus configured to record information onto a magnetic recording medium by a shingled write recording method, the magnetic recording apparatus includes: a recording head configured to cover a plurality of dot arrays and an end portion of which is situated at one dot array of a recording target; an actuator configured to move the recording head by one array after the recording to one dot array by the recording head; and a controller configured to perform recording compensation of the magnetic dot based on prestored recording data of a peripheral dot of a magnetic dot when input user data is recorded to the magnetic dot.

Magnetic recording apparatus and recording method of magnetic recording apparatus

A magnetic recording medium has magnetic patterns formed of a patterned ferromagnetic layer, and a non-magnetic layer including a component of the ferromagnetic layer and separating the magnetic patterns, in which a thickness 'a' of the non-magnetic layer and a thickness 'b' of the magnetic patterns satisfy a relationship of: a&#x3c;b.

Magnetic recording medium and method of manufacturing the same

According to one embodiment, an ultraviolet-curing resin material for pattern transfer contains at least one of 2-methyl-2-adamantyl acrylate, 2-ethyl-2-adamantyl acrylate, and 1,3-adamantanedimethanol diacrylate, isobornyl acrylate, polyfunctional acrylate, and a polymerization initiator, or contains at least one of the acrylates described above, a polymerization initiator, and fluorine-based alcohol.

Ultraviolet-curing resin material for pattern transfer and magnetic recording medium manufacturing method using the same

According to one embodiment, there is provided a magnetic recording apparatus configured to record data subjected to error correcting coding according to a shingled recording scheme, the magnetic recording apparatus including a magnetic recording medium in which unit bits of the data subjected to error correcting coding are recorded with phase shifted between adjacent tracks, a read head having a width covering a plurality of tracks and configured to read data from the plurality of tracks, and a recording controller configured to record the data subjected to error correcting coding and a parity for the data in the plurality of tracks covered by the read head, in a divided manner.

Magnetic recording apparatus

Growing community of inventors

Tokyo, Japan

Masatoshi Sakurai