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公开(公告)号：US20230019706A1
公开(公告)日：2023-01-19
申请号：US17946825
申请日：2022-09-16
Applicant: FUJIFILM Corporation
Inventor： Teruo ASHIKAWA , Kazuo HIRAGUCHI , Yusuke KAGAWA , Tetsu MIYOSHI
IPC: H04R17/00 , H01L41/047 , H01L41/053 , H01L41/083
Abstract: Provided are a laminated piezoelectric element and an electroacoustic transducer capable of obtaining high piezoelectric characteristics and easily ensuring an electric contact to an electrode layer. A plurality of layers of piezoelectric films, each of which is formed by laminating a first protective layer, a first electrode layer, a piezoelectric layer, a second electrode layer, and a second protective layer in this order, are laminated. Each of the piezoelectric layers is polarized in a thickness direction. In each of the piezoelectric films, the first electrode is disposed on an upstream side in a polarization direction of the piezoelectric layer, and the second electrode is disposed on a downstream side. Each of the plurality of piezoelectric films has a cemented portion which is cemented to an adjacent piezoelectric film and a protruding portion which is not cemented to the adjacent piezoelectric film and in which at least the first electrode layer and the first protective layer or the second electrode layer and the second protective layer protrude from the cemented portion toward the outside in a plane direction. At the protruding portion of each of the piezoelectric films, at least one of a first contact, to which the first electrode layers of the piezoelectric films are electrically connected to each other, or a second contact, to which the second electrode layers of the piezoelectric films are electrically connected to each other, is formed.
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公开(公告)号：US20160144996A1
公开(公告)日：2016-05-26
申请号：US14940150
申请日：2015-11-13
Applicant: FUJIFILM CORPORATION
Inventor： Yusuke KAGAWA , Nobuyuki KIMOTO
CPC classification number: B65D5/0254 , B65D5/4266 , B65D5/542 , B65D5/5425 , B65D85/38
Abstract: A wrap around case including: a case body that includes a top face panel and a bottom face panel, a front face panel and a back face panel, and a pair of side face panels, and that is formed with a perforated tear section running along a ridgeline formed by the top face panel and each of the pair of side face panels; and an overlap section that extends from the top face panel toward the bottom face panel side and overlaps the front face panel, and that is formed with a gap to an edge portion at the bottom face panel side of a cutout portion formed at a position offset to one end side or another end side of the center, along the facing direction of the side face panels, of an edge portion at the top face panel side of the front face panel.
Abstract translation: 包装盒包括：壳体，其包括顶面板和底面板，前面板和后面板，以及一对侧面板，并且形成有沿着所述穿孔的撕裂部分 由顶面板和一对侧面板中的每一个形成的棱线; 以及从顶面板朝向底面板侧延伸并与前面板重叠的重叠部，并且与形成在位置偏移的切口部的底面板侧的边缘部形成有间隙 在前面板的顶面板侧的边缘部分沿着侧面板的面向方向延伸到中心的一端侧或另一端侧。
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公开(公告)号：US20230026623A1
公开(公告)日：2023-01-26
申请号：US17955610
申请日：2022-09-29
Applicant: FUJIFILM Corporation
Inventor： Teruo ASHIKAWA , Yusuke KAGAWA , Kazuo HIRAGUCHI , Tetsu MIYOSHI
IPC: H04R17/00 , H01L41/09 , H01L41/18 , H01L41/083 , H01L41/047 , H01L41/08
Abstract: Provided is a laminated piezoelectric element is formed by folding back and laminating a piezoelectric film having an electrode layer and a protective layer on both sides of a piezoelectric layer in which piezoelectric particles are dispersed in a matrix. In the laminated two layers of the piezoelectric film, in a case where a thickness of a central portion thereof is a center thickness and a position up to twice the center thickness in a direction from the folded side end part toward the center is the folded-back portion, there is a position at which the thickness is greater than the center thickness in the folded-back portion, and there is an air gap in the folded-back portion or the air gap is filled with a cementing agent. The laminated piezoelectric element is able to prevent peeling of the electrode layer and the like in the folded-back portion in the laminated piezoelectric element in which the piezoelectric film is folded back and laminated. An electroacoustic transducer uses the laminated piezoelectric element.
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公开(公告)号：US20220013146A1
公开(公告)日：2022-01-13
申请号：US17366039
申请日：2021-07-02
Applicant: FUJIFILM Corporation
Inventor： Norihito KASADA , Yusuke KAGAWA
Abstract: The magnetic tape cartridge includes a magnetic tape, and a cartridge reel. In the magnetic tape, a minimum winding deviation occurrence load measured after the magnetic tape is rewound around the cartridge reel by applying a tension of 0.40 N in a longitudinal direction of the magnetic tape is 300 N or less.
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公开(公告)号：US20180225561A1
公开(公告)日：2018-08-09
申请号：US15835469
申请日：2017-12-08
Applicant: FUJIFILM CORPORATION
Inventor： Yusuke KAGAWA
CPC classification number: G06K19/08 , G06K19/06028 , G06K19/0723 , G11B15/07 , G11B23/042 , G11B23/046 , G11B23/08714 , G11B23/0875
Abstract: A recording system includes a reading part that reads information recorded on a first recording medium that is provided in a recording tape cartridge, of which recorded information is readable in a non-contact manner; and a recording part that records the information read by the reading part on a second recording medium of which recorded information is visually recognizable from the outside.
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Patent Agency Ranking
公开(公告)号：US20180090169A1
公开(公告)日：2018-03-29
申请号：US15679155
申请日：2017-08-17
Applicant: FUJIFILM CORPORATION
Inventor： Yusuke KAGAWA
IPC: G11B23/04 , G11B23/107
CPC classification number: G11B23/043 , G11B23/044 , G11B23/045 , G11B23/047 , G11B23/048 , G11B23/107
Abstract: A recording tape cartridge includes a set of two first guide wall portions formed in a direction orthogonal to a loading direction of the case into a drive device and between which a first protruding wall portion formed at a brake member is insertable, and a set of two second guide wall portions and a set of two third guide wall portions formed at regular intervals from the first guide wall portions in a circumferential direction. A second protruding wall portion at the brake member is insertable between the second guide wall portions, and the third protruding wall portion at the brake member is insertable between the third guide wall portions. An interval between the each first guide wall portion and the first protruding wall portion is denoted by α and an interval between the each second guide wall portion and the second protruding wall portion and an interval between the each third guide wall portion and the third protruding wall portion is denoted by β, “α≧2×β” is satisfied.
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公开(公告)号：US20240179474A1
公开(公告)日：2024-05-30
申请号：US18432479
申请日：2024-02-05
Applicant: FUJIFILM Corporation
Inventor： Yusuke KAGAWA , Eiki OZAWA
IPC: H04R17/00 , H10N30/092 , H10N30/85 , H10N30/88
CPC classification number: H04R17/005 , H10N30/092 , H10N30/852 , H10N30/883
Abstract: Provided is a piezoelectric film including electrode layers on both surfaces of a piezoelectric layer which contains piezoelectric particles in a matrix containing a polymer material, in which it is possible to prevent operational failure due to dielectric breakdown between the electrode layers at an end part. The piezoelectric film includes a piezoelectric layer which contains piezoelectric particles in a matrix containing a polymer material, electrode layers which are provided on both surfaces of the piezoelectric layer, and protective layers which are provided on the electrode layers, in which the piezoelectric film further includes an edge surface sealing layer consisting of a material containing a resin, the edge surface sealing layer covering an edge surface of the piezoelectric film, and an inter-electrode distance on the edge surface of the piezoelectric film is 30 μm or more, and is 103% or more and less than 120% with respect to a thickness of the piezoelectric layer.
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公开(公告)号：US20230127642A1
公开(公告)日：2023-04-27
申请号：US18145132
申请日：2022-12-22
Applicant: FUJIFILM Corporation
Inventor： Yusuke KAGAWA
IPC: H10N30/87 , H10N30/85 , H04R17/00 , H10N30/072
Abstract: An object of the present invention is to provide a piezoelectric element formed of a piezoelectric film including an electrode layer provided on each of both surfaces of a piezoelectric layer and a protective layer provided on the surface of the electrode layer, in which the electrode layer and a conductive member such as a lead wire can be connected to each other with high productivity and the resistance of the connection is also low. The object thereof is achieved by opening through-holes in the protective layer of the piezoelectric film and the conductive member, allowing both through-holes to at least partially overlap each other, filling the through-hole of the protective layer with a conductive filling member, and allowing the filling member to reach the through-hole of the conductive member.
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公开(公告)号：US20220279284A1
公开(公告)日：2022-09-01
申请号：US17749371
申请日：2022-05-20
Applicant: FUJIFILM Corporation
Inventor： Yusuke KAGAWA , Kazuo HIRAGUCHI
IPC: H04R17/00 , H04R17/10 , H01L41/047 , H01L41/053
Abstract: An object of the present invention is to provide an electroacoustic transducer having a diaphragm and a piezoelectric element, in which the piezoelectric element is replaceable and deterioration of the piezoelectric element caused by moisture absorption can be prevented. The object is accomplished by incorporating a diaphragm, a sealing member affixed to one principal surface of the diaphragm, the sealing member having a gas barrier property and being unsealable and closable after unsealing, and a piezoelectric element sealed in the sealing member and affixed to face the diaphragm in the sealing member, the piezoelectric element using a piezoelectric film provided with electrode layers on both surfaces of a piezoelectric layer.
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公开(公告)号：US20220272458A1
公开(公告)日：2022-08-25
申请号：US17742193
申请日：2022-05-11
Applicant: FUJIFILM Corporation
Inventor： Yusuke KAGAWA , Teruo ASHIKAWA , Kazuo HIRAGUCHI
IPC: H04R17/00
Abstract: Provided is a piezoelectric element capable of preventing the occurrence of poor connection to an electrode layer.
A piezoelectric element includes a piezoelectric layer, electrode layers formed on both sides of the piezoelectric layer, and a protective layer laminated on a surface of the electrode layer opposite to a surface on a piezoelectric layer side, in which the piezoelectric element includes a conductive foil laminated on a surface of the protective layer opposite to the electrode layer, the protective layer has a hole that penetrates from a surface to the electrode layer, the conductive foil includes an opening portion at a position that overlaps with the hole of the protective layer in a surface direction, the piezoelectric element includes a filling member consisting of a conductive material, which is formed on at least a part of a surface of the conductive foil from insides of the hole of the protective layer and an opening portion of the conductive foil and is electrically connected to the electrode layer and the conductive foil, and a covering member that covers the filling member and the conductive foil, the covering member has a through-hole at a position that does not overlap with the filling member in the surface direction, and the piezoelectric element includes a conductive member, which is inserted into the through-hole of the covering member and electrically connected to the conductive foil.
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