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    MAGNETIC RECORDING MEDIUM AND COATING COMPOSITION FOR MAGNETIC RECORDING MEDIUM
    12.
    发明申请
    MAGNETIC RECORDING MEDIUM AND COATING COMPOSITION FOR MAGNETIC RECORDING MEDIUM 有权
    用于磁记录介质的磁记录介质和涂层组合物

    公开(公告)号：US20160093321A1

    公开(公告)日：2016-03-31

    申请号：US14869014

    申请日：2015-09-29

    Applicant: FUJIFILM CORPORATION

    Inventor： Toshihide AOSHIMA ,  Wataru KIKUCHI ,  Kazutoshi KATAYAMA ,  Tatsuo MIKAMI

    IPC: G11B5/65 ,  H01F1/42

    CPC classification number: G11B5/7013

    Abstract: The magnetic recording medium comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, and further comprises a compound denoted by Formula (1): wherein, in Formula (1), X denotes —O—, —S—, or NR1—; each of R and R1 independently denotes a hydrogen atom or a monovalent substituent; L denotes a divalent connecting group; Z denotes a partial structure of valence n comprising at least one group selected from the group consisting of carboxyl groups and carboxylate groups; m denotes an integer of greater than or equal to 2, and n denotes an integer of greater than or equal to 1.

    Abstract translation: 磁性记录介质包括在非磁性载体上包含铁磁粉末和粘合剂的磁性层，并且还包含由式（1）表示的化合物：其中，在式（1）中，X表示-O - ， - S-或NR1 - ; R和R 1各自独立地表示氢原子或一价取代基; L表示二价连接基团; Z表示包含选自羧基和羧酸酯基的至少一个基团的价数n的部分结构; m表示大于或等于2的整数，n表示大于或等于1的整数。

    MAGNETIC TAPE
    13.
    发明申请
    MAGNETIC TAPE 审中-公开
    磁带

    公开(公告)号：US20160064024A1

    公开(公告)日：2016-03-03

    申请号：US14837184

    申请日：2015-08-27

    Applicant: FUJIFILM CORPORATION

    Inventor： Tatsuo MIKAMI ,  Junpei ISHIDA ,  Wataru KIKUCHI

    IPC: G11B5/708 ,  G11B5/71 ,  G11B5/73 ,  G11B5/735 ,  G11B5/733

    CPC classification number: G11B5/708 ,  G11B5/71 ,  G11B5/733 ,  G11B5/735

    Abstract: The magnetic tape comprises, on one surface of a nonmagnetic support, a nonmagnetic layer comprising nonmagnetic powder, lubricant, and binder, comprises, on a surface of the nonmagnetic layer, a magnetic layer comprising magnetic powder, lubricant, and binder, and comprises, on the opposite surface of the nonmagnetic support from the surface on which the nonmagnetic layer and magnetic layer are present, a backcoat layer comprising nonmagnetic powder, lubricant, and binder, wherein the contact angle for water of a surface of the magnetic layer ranges from 95° to 100°, and the contact angle for water of a surface of the backcoat layer ranges from 95° to 100°.

    Abstract translation: 该磁带在非磁性载体的一个表面上包括非磁性粉末，润滑剂和粘合剂的非磁性层，在非磁性层的表面上包括包含磁性粉末，润滑剂和粘合剂的磁性层， 在非磁性载体的表面上存在非磁性层和磁性层的相反表面上，包含非磁性粉末，润滑剂和粘结剂的背涂层，其中磁性层表面的水的接触角为95 °至100°，背涂层表面的水的接触角为95°至100°。

    POLYMER, COMPOSITION, PIEZOELECTRIC COMPOSITE MATERIAL, PIEZOELECTRIC FILM AND PIEZOELECTRIC ELEMENT
    14.
    发明申请
    POLYMER, COMPOSITION, PIEZOELECTRIC COMPOSITE MATERIAL, PIEZOELECTRIC FILM AND PIEZOELECTRIC ELEMENT 有权

    公开(公告)号：US20250089573A1

    公开(公告)日：2025-03-13

    申请号：US18954767

    申请日：2024-11-21

    Applicant: FUJIFILM Corporation

    Inventor： Wataru KIKUCHI ,  Naoyuki MOROOKA ,  Mikio ONO

    IPC: H10N30/85 ,  C08F16/28 ,  H04R17/00 ,  H10N30/092

    Abstract: The present invention provides a polymer which has a small change in relative permittivity before and after exposure to a high-temperature and high-humidity environment, and is capable of forming a film having few wrinkles; a composition; a piezoelectric composite material; a piezoelectric film; and a piezoelectric element. The polymer of an embodiment of the present invention is a polymer including a repeating unit represented by Formula (A) and a repeating unit represented by Formula (B), in which a content of the repeating unit represented by Formula (A) is 60% by mole or more with respect to all repeating units of the polymer, a content of the repeating unit represented by Formula (B) is 1% to 40% by mole with respect to all repeating units of the polymer, and the polymer includes no repeating unit represented by Formula (C), or in a case where the polymer includes the repeating unit represented by Formula (C), a content of the repeating unit represented by Formula (C) is 5% by mole or less with respect to all repeating units of the polymer.

    POLYMER-BASED PIEZOELECTRIC COMPOSITE MATERIAL, PIEZOELECTRIC FILM, PIEZOELECTRIC SPEAKER, AND FLEXIBLE DISPLAY
    15.
    发明申请
    POLYMER-BASED PIEZOELECTRIC COMPOSITE MATERIAL, PIEZOELECTRIC FILM, PIEZOELECTRIC SPEAKER, AND FLEXIBLE DISPLAY 有权

    公开(公告)号：US20220115581A1

    公开(公告)日：2022-04-14

    申请号：US17555530

    申请日：2021-12-20

    Applicant: FUJIFILM Corporation

    Inventor： Wataru KIKUCHI

    IPC: H01L41/193 ,  H01L41/08 ,  H04R17/00 ,  G02F1/1333 ,  H01L51/00 ,  C08K3/22 ,  C08F20/42 ,  H01L41/45

    Abstract: The present invention provides a polymer-based piezoelectric composite material from which a piezoelectric film capable of outputting a higher sound pressure is obtained in a case of using a piezoelectric speaker, a piezoelectric film formed of the polymer-based piezoelectric composite material, and a piezoelectric speaker and a flexible display which are formed of the piezoelectric film. The polymer-based piezoelectric composite material of the present invention is a polymer-based piezoelectric composite material including a polymer matrix which contains a polymer containing a group represented by Formula (1), and piezoelectric particles. *-L1-CR1R2—CN  Formula (1) In Formula (1), L1 represents a divalent linking group excluding a divalent aliphatic hydrocarbon group. R1 and R2 each independently represent a hydrogen atom, an alkyl group, or an aryl group.

    MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING APPARATUS
    17.
    发明申请
    MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING APPARATUS 审中-公开

    公开(公告)号：US20200312362A1

    公开(公告)日：2020-10-01

    申请号：US16830752

    申请日：2020-03-26

    Applicant: FUJIFILM Corporation

    Inventor： Wataru KIKUCHI ,  So MATSUYAMA

    IPC: G11B5/71 ,  G11B5/706 ,  G11B5/733 ,  G11B5/78

    Abstract: The magnetic recording medium includes: a non-magnetic support; and a magnetic layer including ferromagnetic powder, in which the magnetic layer includes a compound having a salt structure, and the salt structure is an ammonium salt structure of an alkyl ester anion represented by the following Formula 1. In Formula 1, R represents an alkyl group having 7 or more carbon atoms or a fluorinated alkyl group having 7 or more carbon atoms, Z+ represents an ammonium cation, and a water contact angle on a surface of the magnetic layer is 80° or more and less than 100°. A magnetic recording and reproducing apparatus includes the magnetic recording medium.

    AQUEOUS PIGMENT DISPERSION AND AQUEOUS INK COMPOSITION
    20.
    发明申请
    AQUEOUS PIGMENT DISPERSION AND AQUEOUS INK COMPOSITION 审中-公开

    公开(公告)号：US20190177561A1

    公开(公告)日：2019-06-13

    申请号：US16282241

    申请日：2019-02-21

    Applicant: FUJIFILM CORPORATION

    Inventor： Masashi KOYANAGI ,  Wataru KIKUCHI ,  Naoko NISHIMURA

    IPC: C09D11/326 ,  C09D11/322 ,  C09D11/38 ,  C09D11/033 ,  C09D11/037

    Abstract: Provided are an aqueous pigment dispersion including: water; a water-soluble organic solvent; a pigment; a polymer dispersant including 20 mass % to 60 mass % of a constitutional unit a-1 represented by Formula 1 with respect to the total mass of the polymer dispersant, 10 mass % to 40 mass % of a constitutional unit a-2 represented by Formula 2 with respect to the total mass of the polymer dispersant, and a constitutional unit a-3 having an acidic group; and an amine compound represented by Formula 3, and an aqueous ink composition using the aqueous pigment dispersion.

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