公开(公告)号：US20220093126A1

公开(公告)日：2022-03-24

申请号：US17542561

申请日：2021-12-06

Applicant: FUJIFILM Corporation

Inventor： Kenji Naoi ,  Masashi Shirata

IPC: G11B5/706 ,  G11B5/70 ,  G11B5/712 ,  C01G49/00

Abstract: A hexagonal strontium ferrite powder, in which an average particle size is 10.0 to 25.0 nm, a content of one or more kinds of atom selected from the group consisting of a gallium atom, a scandium atom, an indium atom, and an antimony atom is 1.0 to 15.0 atom % with respect to 100.0 atom % of an iron atom, and a coercivity Hc is greater than 2,000 Oe and smaller than 4.000 Oe. A magnetic recording medium including: a non-magnetic support; and a magnetic layer including a ferromagnetic powder and a binding agent on the non-magnetic support, in which the ferromagnetic powder is the hexagonal strontium ferrite powder. A magnetic recording and reproducing apparatus including this magnetic recording medium.

公开(公告)号：US20190295582A1

公开(公告)日：2019-09-26

申请号：US16357748

申请日：2019-03-19

Applicant: Fujifilm Corporation

Inventor： Kenji Naoi ,  Masashi Shirata

IPC: G11B5/65 ,  G11B5/706 ,  H01F1/11 ,  H01F1/053

Abstract: Provided is a ferromagnetic powder for magnetic recording, in which an activation volume is 800 nm3 to 1,500 nm3, an average plate ratio is 2.0 to 5.0, a rare earth atom content is 0.5 atom % to 5.0 atom %, and an aluminum atom content is greater than 10.0 atom % and equal to or smaller than 20.0 atom %, with respect to 100 atom % of iron atom, and the ferromagnetic powder is a plate-shaped hexagonal strontium ferrite powder having a rare earth atom surface layer portion uneven distribution and an aluminum atom surface layer portion uneven distribution, and a magnetic recording medium including this ferromagnetic powder for magnetic recording in a magnetic layer.

公开(公告)号：US09491858B2

公开(公告)日：2016-11-08

申请号：US14864895

申请日：2015-09-25

Applicant: FUJIFILM Corporation

Inventor： Yasushi Endo ,  Nobuyuki Tada ,  Kenji Naoi ,  Tomohito Asai ,  Hideo Ikeda ,  Michihiro Shibata

IPC: H05K1/09 ,  H05K1/11 ,  C09J133/26 ,  C08F220/18 ,  C09J133/08 ,  C09J133/10 ,  H05K1/02 ,  H05K3/28 ,  G06F3/044 ,  H05K3/46

CPC classification number: H05K1/11 ,  C08F220/18 ,  C09J133/08 ,  C09J133/10 ,  C09J133/26 ,  G06F3/044 ,  G06F2203/04103 ,  G06F2203/04112 ,  H05K1/0289 ,  H05K1/092 ,  H05K3/285 ,  H05K3/4673 ,  H05K2201/0108 ,  H05K2201/0761 ,  H05K2201/0769 ,  C08F2220/1858 ,  C08F220/20

Abstract: This wiring board is provided with: a plurality of metal wires disposed upon an insulating substrate; and a transparent adhesive agent layer which is disposed upon the metal wires, and which is in direct contact with the metal wires. The metal wires include: a first metal wire which has a pulse signal supplied thereto; and a second metal wire which has a fixed electric potential applied thereto. The pulse signal has a reference level identical to the fixed electric potential, and has a pulse train in which a plurality of pulses having a pulse width of not more than 3 msec are arranged, the integral time of the pulses in a period of 600 seconds being less than 60 seconds.

Abstract translation: 该布线板设置有：设置在绝缘基板上的多个金属线; 以及设置在金属线上并与金属线直接接触的透明粘合剂层。 金属线包括：具有供给脉冲信号的第一金属线; 以及施加有固定电位的第二金属线。 脉冲信号具有与固定电位相同的参考电平，并且具有脉冲序列，其中布置脉冲宽度不超过3毫秒的多个脉冲，脉冲在600秒的周期内的积分时间 小于60秒。

公开(公告)号：US20160132183A1

公开(公告)日：2016-05-12

申请号：US14988231

申请日：2016-01-05

Applicant: FUJIFILM Corporation

Inventor： Kenji Naoi ,  Toshiaki Hayashi

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  B32B7/12 ,  B32B15/02 ,  B32B2457/208 ,  G06F3/044 ,  G06F2203/04103 ,  G06F2203/04112

Abstract: The invention provides a layered body for a touch panel in which metal migration is suppressed and changes in the electrical resistance of a fine metal wire are suppressed, and a touch panel. The layered body for a touch panel of the invention is a layered body for a touch panel including a substrate, fine metal wires which are disposed on the substrate, and an adhesive layer which is disposed on the fine metal wires, in which the amount of the metal contained per unit area in the fine metal wire is in a range of 0.01 g/m2 to 10 g/m2, the adhesive layer contains a benzotriazole-based compound, and the content of the benzotriazole-based compound is in a range of 0.05 mass % to 1.5 mass % with respect to the total mass of the adhesive layer.

Abstract translation: 本发明提供了一种用于触摸面板的分层体，其中抑制了金属迁移，并且抑制了细金属丝的电阻的变化和触摸面板。 本发明的触摸面板用层叠体是用于触摸面板的层叠体，其包括基板，设置在基板上的细金属丝，以及配置在细金属丝上的粘接层，其中， 细金属线中每单位面积含有的金属在0.01g / m 2〜10g / m 2的范围内，粘合层含有苯并三唑系化合物，苯并三唑类化合物的含量在 相对于粘合剂层的总质量为0.05质量％〜1.5质量％。

公开(公告)号：US11270726B2

公开(公告)日：2022-03-08

申请号：US16830702

申请日：2020-03-26

Applicant: FUJIFILM Corporation

Inventor： Kenji Naoi

IPC: G11B5/714 ,  G11B5/706 ,  G11B5/733

Abstract: The magnetic recording medium includes a non-magnetic support; and a magnetic layer including a ferromagnetic powder, in which the ferromagnetic powder is an ε-iron oxide powder having an average particle size of 5.0 nm to 16.0 nm, a coercivity Hc in a vertical direction is 1,884 Oe to 3,141 Oe, a ten-point average roughness Rz of a surface of the magnetic layer is 35.0 nm to 45.0 nm, and a ratio Rp/Rz of a maximum peak height Rp of the surface of the magnetic layer to the Rz is 0.25 to 1.00.

公开(公告)号：US11170812B2

公开(公告)日：2021-11-09

申请号：US16555571

申请日：2019-08-29

Applicant: FUJIFILM Corporation

Inventor： Kenji Naoi ,  Masashi Shirata ,  Wataru Kikuchi

IPC: G11B5/706 ,  G11B5/714 ,  G11B5/70 ,  G11B5/702

Abstract: A magnetic recording medium, a composition for it, and a magnetic recording and reproducing apparatus are provided. The medium includes a non-magnetic support; and a magnetic layer including a ferromagnetic powder and a binding agent on the support. The magnetic layer also includes a compound including one or more partial structures selected from partial structures represented by Formulas 1 and 2, and a polyalkyleneimine chain. The composition for the recording medium includes a ferromagnetic powder and the compound. In Formulas 1 and 2, L1 and L2 each independently represents a divalent linking group, Z1 and Z2 each independently represents a monovalent group represented by —OM or a monovalent group represented by —O−A+, M represents a hydrogen atom or an alkali metal atom, and A+ represents an ammonium cation.

公开(公告)号：US11574652B2

公开(公告)日：2023-02-07

申请号：US17401326

申请日：2021-08-13

Applicant: The University of Tokyo ,  OSAKA UNIVERSITY ,  FUJIFILM Corporation

Inventor： Shin-ichi Ohkoshi ,  Marie Yoshikiyo ,  Kenta Imoto ,  Kosuke Nakagawa ,  Asuka Namai ,  Hiroko Tokoro ,  Makoto Nakajima ,  Masashi Shirata ,  Kenji Naoi

IPC: G11B5/00 ,  G11B11/105 ,  G11B5/706

Abstract: Provided is a recording device. The recording device includes: an external magnetic field application unit that is configured to apply an external magnetic field to a magnetic recording medium; a light irradiation unit that is configured to irradiate light; and a light focusing unit that is configured to focus the light from the light irradiation unit by resonating the light to generate an enhanced magnetic field in which a magnetic field of the light is enhanced, in which magnetization of the magnetic recording medium is inverted by applying the external magnetic field and the enhanced magnetic field to the magnetic recording medium.

公开(公告)号：US11488627B2

公开(公告)日：2022-11-01

申请号：US16357748

申请日：2019-03-19

Applicant: FUJIFILM Corporation

Inventor： Kenji Naoi ,  Masashi Shirata

IPC: G11B5/706 ,  G11B5/65 ,  H01F1/053 ,  H01F1/11

Abstract: Provided is a ferromagnetic powder for magnetic recording, in which an activation volume is 800 nm3 to 1,500 nm3, an average plate ratio is 2.0 to 5.0, a rare earth atom content is 0.5 atom % to 5.0 atom %, and an aluminum atom content is greater than 10.0 atom % and equal to or smaller than 20.0 atom %, with respect to 100 atom % of iron atom, and the ferromagnetic powder is a plate-shaped hexagonal strontium ferrite powder having a rare earth atom surface layer portion uneven distribution and an aluminum atom surface layer portion uneven distribution, and a magnetic recording medium including this ferromagnetic powder for magnetic recording in a magnetic layer.

公开(公告)号：US11562839B2

公开(公告)日：2023-01-24

申请号：US15974797

申请日：2018-05-09

Applicant: FUJIFILM Corporation

Inventor： Kenji Naoi ,  Takashi Fujimoto ,  Masashi Shirata

IPC: H01F1/03 ,  H01F1/00 ,  C01G49/06 ,  C08L101/06 ,  C01G49/08 ,  H01F1/11 ,  G11B5/70 ,  C01G49/00

Abstract: A core-shell particle includes: a core including an iron oxyhydroxide compound represented by Formula A3a3Fe1−a3OOH (in which A3 represents at least one metal element other than Fe, and a3 satisfies 0

公开(公告)号：US11459244B2

公开(公告)日：2022-10-04

申请号：US16251097

申请日：2019-01-18

Applicant: FUJIFILM CORPORATION

Inventor： Kenji Naoi ,  Takashi Fujimoto ,  Masashi Shirata

IPC: C01G49/02 ,  H01F1/11 ,  G11B5/706

Abstract: Disclosed are a particle of a 13-iron oxyhydroxide-based compound represented by Formula (1), in which an average equivalent circle diameter of primary particles is 5 nm to 30 nm, and a coefficient of variation of equivalent circle diameters of the primary particles is 10% to 30% [In Formula (1), A represents at least one kind of metal element other than Fe, and a represents a number that satisfies a relationship of 0≤a