公开(公告)号：US20250078869A1

公开(公告)日：2025-03-06

申请号：US18820883

申请日：2024-08-30

Applicant: FUJIFILM Corporation

Inventor： Wataru KIKUCHI ,  Yutaka NOZOE ,  Nobuhito ONOZUKA

IPC: G11B5/725 ,  G11B5/008

Abstract: The magnetic recording medium includes a silicon-containing compound having a partial structure represented by Formula 1 (hereinafter, also simply referred to as a “silicon-containing compound”) in a portion on a non-magnetic support on a magnetic layer side. In Formula 1, R11, R12, and R13 each independently represent a monovalent substituent, L11 represents an (n+1)-valent linking group, n represents an integer of 2 or more, and * represents a position at which the partial structure represented by Formula 1 is bonded to another partial structure constituting the silicon-containing compound.

公开(公告)号：US20180215185A1

公开(公告)日：2018-08-02

申请号：US15938421

申请日：2018-03-28

Applicant: FUJIFILM Corporation

Inventor： Wataru KIKUCHI ,  Yuji YOSHIDA

IPC: B41M5/50 ,  B41M5/00 ,  B41M5/52 ,  D21H19/12 ,  D21H21/16

CPC classification number: B41M5/502 ,  B41M5/0023 ,  B41M5/0047 ,  B41M5/50 ,  B41M5/52 ,  B41M5/5218 ,  B41M5/5245 ,  B41M5/5254 ,  B41M5/5263 ,  D21H19/12 ,  D21H19/56 ,  D21H21/16 ,  D21H27/00

Abstract: An image recording paper medium containing a resin having a constitutional unit represented by General Formula (1) and a constitutional unit represented by General Formula (2-1) and/or a constitutional unit represented by General Formula (2-2), in which in the resin, a content of the constitutional unit represented by General Formula (1) is 30% to 96% by mass, and a total content of the constitutional unit represented by General Formula (2-1) and the constitutional unit represented by General Formula (2-2) is 4% to 70% by mass. Also provided are a manufacturing method of the image recording paper medium and an image recording method including the manufacturing method: where R1, L1, R2, R3, L2, M1 and M2 are as defined herein.

公开(公告)号：US20240355356A1

公开(公告)日：2024-10-24

申请号：US18644255

申请日：2024-04-24

Applicant: FUJIFILM CORPORATION

Inventor： Wataru KIKUCHI ,  Nobuhito ONOZUKA

IPC: G11B5/735 ,  G11B5/73 ,  G11B5/78

CPC classification number: G11B5/7358 ,  G11B5/73923 ,  G11B5/78

Abstract: The magnetic recording medium includes a non-magnetic support; and a magnetic layer containing a ferromagnetic powder, in which a nitrogen-containing polymer is included in a portion on the non-magnetic support on a magnetic layer side, the nitrogen-containing polymer contains a fluorine-containing group and a polyester chain, the fluorine-containing group is bonded to a nitrogen atom of the nitrogen-containing polymer, the polyester chain is bonded to the nitrogen atom of the nitrogen-containing polymer or forms a salt crosslinking structure with the nitrogen atom of the nitrogen-containing polymer, and a contact angle with water, which is measured on a surface of the magnetic layer after hexane cleaning, is 90° or more.

公开(公告)号：US20200075052A1

公开(公告)日：2020-03-05

申请号：US16555571

申请日：2019-08-29

Applicant: FUJIFILM Corporation

Inventor： Kenji NAOI ,  Masashi SHIRATA ,  Wataru KIKUCHI

IPC: G11B5/706 ,  G11B5/70

Abstract: The magnetic recording medium includes a non-magnetic support; and a magnetic layer including a ferromagnetic powder and a binding agent on the non-magnetic support, in which the magnetic layer further includes a compound including one or more partial structures selected from the group consisting of a partial structure represented by Formula 1 and a partial structure represented by Formula 2, and a polyalkyleneimine chain. A magnetic recording and reproducing apparatus including this magnetic recording medium. A composition for a magnetic recording medium including a ferromagnetic powder and the compound. L1 in Formula 1 and L2 in Formula 2 each independently represent a divalent linking group, Z1 in Formula 1 and Z2 in Formula 2 each independently represent 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：US20150279403A1

公开(公告)日：2015-10-01

申请号：US14673205

申请日：2015-03-30

Applicant: FUJIFILM Corporation

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

IPC: G11B5/70 ,  C09D127/06 ,  C09D175/04

CPC classification number: C09D127/06 ,  C08G18/4269 ,  C08G18/791 ,  G11B5/7013 ,  G11B5/714 ,  C08K5/3492 ,  C08L27/04

Abstract: An aspect of the present invention relates to a magnetic recording medium, which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein the magnetic layer further comprises a compound which has a weight average molecular weight of equal to or more than 1,000 but less than 20,000 and is denoted by formula (1): wherein, in formula (1), A denotes a monovalent substituent, R1 denotes a single bond or a divalent connecting group, and m denotes an integer ranging from 2 to 4, multiple instances of A and R1 that are present can be identical or different, at least one of the multiple instances of A that are present denotes a monovalent polymer group and X denotes a heterocyclic group of valence m.

Abstract translation: 本发明的一个方面涉及一种磁记录介质，其包括在非磁性载体上包含铁磁粉末和粘合剂的磁性层，其中所述磁性层还包含重均分子量等于或大于1,000的化合物 但小于20,000，由式（1）表示：其中，在式（1）中，A表示一价取代基，R1表示单键或二价连接基，m表示2〜4的整数，多元 存在的A和R1的实例可以相同或不同，存在的多个实例中的至少一个表示一价聚合物基团，X表示价数m的杂环基团。

公开(公告)号：US20130171415A1

公开(公告)日：2013-07-04

申请号：US13779419

申请日：2013-02-27

Applicant: FUJIFILM Corporation

Inventor： Kyouhei SAKITA ,  Wataru KIKUCHI ,  Masatoshi YUMOTO ,  Masanori HIKITA

IPC: C07D335/06 ,  C07D307/81 ,  C08G18/83 ,  C07D335/08

CPC classification number: C07D307/78 ,  C07C309/00 ,  C07C2602/08 ,  C07C2603/16 ,  C07C2603/18 ,  C07D307/92 ,  C07D335/06 ,  C07D335/08 ,  G02F1/133345 ,  G02F1/136227 ,  G02F2202/02 ,  G03F7/0045 ,  G03F7/0046 ,  G03F7/0392 ,  G03F7/0397 ,  G03F7/40 ,  H01L27/3258 ,  H05B33/22

Abstract: Disclosed is a photosensitive resin composition comprising: (Component A) an oxime sulfonate compound represented by Formula (1); (Component B) a resin comprising a constituent unit having an acid-decomposable group that is decomposed by an acid to form a carboxyl group or a phenolic hydroxy group; and (Component C) a solvent wherein in Formula (1) R1 denotes an alkyl group, an aryl group, or a heteroaryl group, each R2 independently denotes a hydrogen atom, an alkyl group, an aryl group, or a halogen atom, Ar1 denotes an o-arylene group or an o-heteroarylene group, X denotes O or S, and n denotes 1 or 2, provided that of two or more R2s present in the compound, at least one denotes an alkyl group, an aryl group, or a halogen atom.

Abstract translation: 公开了一种光敏树脂组合物，其包含：（组分A）由式（1）表示的肟磺酸盐化合物; （B成分）具有酸分解成羧酸或酚羟基的具有酸分解性基团的构成单元的树脂; 和（组分C）其中在式（1）中的R 1表示烷基，芳基或杂芳基的溶剂，每个R 2独立地表示氢原子，烷基，芳基或卤素原子，Ar 1 表示邻亚芳基或邻亚芳基，X表示O或S，n表示1或2，条件是化合物中存在两个或多个R 2，至少1表示烷基，芳基， 或卤素原子。

公开(公告)号：US20220102619A1

公开(公告)日：2022-03-31

申请号：US17547267

申请日：2021-12-10

Applicant: FUJIFILM Corporation

Inventor： Wataru KIKUCHI

IPC: H01L41/18 ,  H01L41/37 ,  H01L27/32 ,  H01L51/00 ,  G02F1/1333 ,  G02F1/167 ,  G02F1/16755 ,  C08F120/34 ,  C08F20/34 ,  C08K3/11 ,  H04R17/00

Abstract: The present invention provides a polymer-based piezoelectric composite material from which a piezoelectric film capable of outputting a higher sound pressure and exhibiting excellent flexibility even in a low-temperature environment 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)n—CN  Formula (1) In Formula (1), L1 represents a divalent linking group excluding a urethane group. R1 and R2 each independently represent a hydrogen atom, an alkyl group, or an aryl group. n represents an integer of 3 or greater. * represents a bonding position with respect to the main chain of a polymer.

公开(公告)号：US20140374645A1

公开(公告)日：2014-12-25

申请号：US14311894

申请日：2014-06-23

Applicant: FUJIFILM Corporation

Inventor： Wataru KIKUCHI ,  Toshihide AOSHIMA ,  Yuushi KANEKO ,  Kazutoshi KATAYAMA ,  Katsuhiko MEGURO

IPC: G11B5/70 ,  H01F1/42

CPC classification number: G11B5/7013

Abstract: An aspect of the present invention relates to a magnetic recording medium comprising a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein an average particle size of the ferromagnetic powder is equal to or less than 50 nm, the magnetic layer further comprises a compound, and the compound comprises at least one polyalkyleneimine chain and at least one polyester chain, with a proportion in the compound accounted for by the polyalkyleneimine chain being less than 5.0 weight percent and a number average molecular weight of the polyalkyleneimine chain ranging from 300 to 3,000.

Abstract translation: 本发明的一个方面涉及一种包括在非磁性载体上包含铁磁粉末和粘合剂的磁性层的磁记录介质，其中铁磁性粉末的平均粒度等于或小于50nm，磁性层还包括 化合物，并且化合物包含至少一种聚亚烷基亚胺链和至少一个聚酯链，所述化合物中占聚合亚烷基亚胺链的比例小于5.0重量％，聚亚烷基亚胺链的数均分子量范围为300〜 3,000。

公开(公告)号：US20230101868A1

公开(公告)日：2023-03-30

申请号：US17873728

申请日：2022-07-26

Applicant: FUJIFILM Corporation

Inventor： Noriko OYANAGI ,  Wataru KIKUCHI ,  Akio Tamura

IPC: G11B5/78 ,  G11B5/706 ,  G11B5/714

Abstract: The magnetic tape includes a non-magnetic support, and a magnetic layer including a ferromagnetic powder. A fluorine-containing compound is included in a portion on the non-magnetic support on a magnetic layer side, and a ratio θr of a water contact angle measured on a surface of the magnetic layer after sliding on a magnetic head to a water contact angle measured on the surface of the magnetic layer before sliding on the magnetic head is 0.70 or more.

公开(公告)号：US20210280213A1

公开(公告)日：2021-09-09

申请号：US17186470

申请日：2021-02-26

Applicant: FUJIFILM Corporation

Inventor： Noriko OYANAGI ,  Wataru KIKUCHI

IPC: G11B5/73 ,  G11B5/735 ,  G11B5/706 ,  G11B5/008

Abstract: The magnetic recording medium includes a non-magnetic support, and a magnetic layer including a ferromagnetic powder. An anisotropic magnetic field Hk is 12 kOe or more, a center line average roughness Ra of the surface of the magnetic recording medium on the magnetic layer side is 1.2 nm or less, and a ratio θr of a contact angle θ2 with respect to 1-bromonaphthalene, measured on a surface on the magnetic layer side after a 1,1,1,2,2,3,4,5,5,5-decafluoropentane immersion, to a contact angle θ1 with respect to 1-bromonaphthalene, measured on the surface on the magnetic layer side before the 1,1,1,2,2,3,4,5,5,5-decafluoropentane immersion is 0.95 or less.