中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

14 records (took 0.017 seconds)

    HEXAGONAL FERRITE MAGNETIC POWDER
    1.
    发明申请
    HEXAGONAL FERRITE MAGNETIC POWDER 审中-公开

    公开(公告)号：US20200185135A1

    公开(公告)日：2020-06-11

    申请号：US16702629

    申请日：2019-12-04

    Applicant: DOWA ELECTRONICS MATERIALS CO., LTD. ,  FUJIFILM Corporation

    Inventor： Hirohisa OMOTO ,  Shuji KANEDA ,  Hiroyuki SUZUKI ,  Toshio TADA

    IPC: H01F1/34 ,  G11B5/73

    Abstract: Provided is a hexagonal ferrite magnetic powder for a magnetic recording medium, containing hexagonal ferrite magnetic particles having aluminum hydroxide adhered on the surface thereof, the hexagonal ferrite magnetic powder having an Al/Fe molar ratio of 0.030 to 0.200, a Co/Fe molar ratio of 0.002 to 0.030, and a Nb/Fe molar ratio of 0.005 to 0.050, and having an Fe site valence AFe of 3.015 to 3.040 as calculated by AFe=(3+2×[Co/Fe]+5×[Nb/Fe])/(1+[Co/Fe]+[Nb/Fe]) wherein [Co/Fe] represents the Co/Fe molar ratio and [Nb/Fe] represents the Nb/Fe molar ratio, and preferably having an activation volume Vact of 1400 to 1800 nm3. This magnetic powder simultaneously achieves an increase in magnetic characteristics including SNR of a magnetic recording medium and a further increase in durability thereof.

    LITHOGRAPHIC PRINTING PLATE PRECURSORS AND PROCESSES FOR PREPARING LITHOGRAPHIC PRINTING PLATES
    2.
    发明申请
    LITHOGRAPHIC PRINTING PLATE PRECURSORS AND PROCESSES FOR PREPARING LITHOGRAPHIC PRINTING PLATES 有权
    平版印刷板前驱体和制备平版印刷板的方法

    公开(公告)号：US20130344440A1

    公开(公告)日：2013-12-26

    申请号：US13975978

    申请日：2013-08-26

    Applicant: FUJIFILM Corporation

    Inventor： Hiroyuki SUZUKI ,  Junya ABE ,  Takafumi NAKAYAMA ,  Kohei TAKESHITA

    IPC: G03F7/09 ,  G03F7/30

    CPC classification number: G03F7/0388 ,  C08F2220/603 ,  C08F2220/606 ,  G03F7/00 ,  G03F7/004 ,  G03F7/027 ,  G03F7/033 ,  G03F7/038 ,  G03F7/085 ,  G03F7/09 ,  G03F7/092 ,  G03F7/11 ,  G03F7/30 ,  G03F7/3042 ,  G03F7/32 ,  G03F7/322

    Abstract: Provided is lithographic printing plates and processes for preparing the lithographic printing plates having excellent printing durability, staining resistance and staining resistance over time.A lithographic printing plate precursor comprising: a substrate; a photosensitive layer provided on the substrate; and an extra layer optionally provided between the substrate and the photosensitive layer; wherein the photosensitive layer or the extra layer adjacent to the substrate contains (A) a copolymer; and wherein the copolymer (A) comprises: (a1) a repeating unit having a structure represented by formula (a1-1) below in a side chain, and (a2) a repeating unit having at least one of the structures represented by formulae (a2-1) to (a2-6) below in a side chain. L1 represents a single bond, a divalent aromatic group containing 6 to 14 carbon atoms, —C(═O)—O—, or —C(—0)═NR2— (wherein R2 represents a hydrogen atom, alkyl or aryl). Z1 represents methylene, ethylene, propylene, butylene, pentylene, hexylene, heptylene, octylene, cyclohexane-1,4-diyl, 1,2-phenylene, 1,3-phenylene, 1,4-phenylene, 1,2-naphthalene, 1,5-naphthalene and a linking group composed of two or more of these divalent linking groups linked through —O— or —S—, wherein a hydrogen atoms in these divalent linking groups may be replaced by substituents. R1 represents a hydrogen atom, alkyl, aryl, heterocyclyl, sulfo, alkylsulfonyl and arylsulfonyl. R21, R22 and R23 each independently represent a hydrogen atom, halogen atom or C1-8 alkyl.

    Abstract translation: 提供了平版印刷版和用于制备具有优异的印刷耐久性，耐污染性和耐污染性的平版印刷版的方法。 一种平版印刷版原版，包括：基底; 设置在基板上的感光层; 以及可选地设置在所述基底和所述感光层之间的额外层; 其中所述感光层或与所述基材相邻的所述多余层含有（A）共聚物; 并且其中所述共聚物（A）包含：（a1）在侧链具有由下式（a1-1）表示的结构的重复单元，和（a2）具有至少一个由式 a2-1）〜（a2-6）。 L1表示单键，含有6​​〜14个碳原子的二价芳基，-C（= O）-O-或-C（ - ）= NR2-（其中R2表示氢原子，烷基或芳基）。 Z1表示亚甲基，亚乙基，亚丙基，亚丁基，亚戊基，亚己基，亚庚基，亚辛基，环己烷-1,4-二基，1,2-亚苯基，1,3-亚苯基，1,4-亚苯基，1,2-萘， 1,5-萘和由这些通过-O-或-S-连接的这些二价连接基团中的两个或更多个的连接基团，其中这些二价连接基团中的氢原子可被取代基取代。 R 1表示氢原子，烷基，芳基，杂环基，磺基，烷基磺酰基和芳基磺酰基。 R 21，R 22和R 23各自独立地表示氢原子，卤素原子或C 1-8烷基。

    POLYMERIZABLE COMPOSITION AND ANTIREFLECTIVE FILM, POLARIZING PLATE AND IMAGE DISPLAY DEVICE USING THE SAME
    3.
    发明申请
    POLYMERIZABLE COMPOSITION AND ANTIREFLECTIVE FILM, POLARIZING PLATE AND IMAGE DISPLAY DEVICE USING THE SAME 有权
    可聚合组合物和抗反射膜，偏振片和使用其的图像显示装置

    公开(公告)号：US20130258467A1

    公开(公告)日：2013-10-03

    申请号：US13853702

    申请日：2013-03-29

    Applicant: FUJIFILM CORPORATION

    Inventor： Naozumi SHIRAIWA ,  Masataka YOSHIZAWA ,  Daiki WAKIZAKA ,  Miho ASAHI ,  Hiroyuki SUZUKI

    IPC: C09D5/00 ,  G02B5/30

    CPC classification number: C09D5/006 ,  C09D4/00 ,  G02B1/10 ,  G02B1/105 ,  G02B1/111 ,  G02B1/116 ,  G02B1/14 ,  G02B1/18 ,  G02B5/30 ,  G02B5/3033

    Abstract: The invention is directed to a polymerizable composition containing: a compound containing a repeating unit having a polyether structure having a fluorine atom and four or more polymerizable groups and being represented by the formula (I) as defined herein; a photopolymerization initiator; and an organic solvent, or a polymerizable composition containing: a compound containing a repeating unit having a polyether structure having a fluorine atom and four or more polymerizable groups and being represented by one of the formulae (I-1) to (I-5) as defined herein; a photopolymerization initiator; and an organic solvent.

    Abstract translation: 本发明涉及一种可聚合组合物，其包含：含有具有氟原子的聚醚结构和四个或更多个可聚合基团并由如本文所定义的式（I）表示的重复单元的化合物; 光聚合引发剂; 有机溶剂或聚合性组合物，其含有含有具有氟原子的聚醚结构和四个以上聚合性基团的重复单元的化合物，并且由式（I-1）〜（I-5）表示， 如本文所定义; 光聚合引发剂; 和有机溶剂。

    METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM
    4.
    发明申请
    METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM 有权
    制造磁记录介质的方法

    公开(公告)号：US20140356525A1

    公开(公告)日：2014-12-04

    申请号：US14464024

    申请日：2014-08-20

    Applicant: FUJIFILM Corporation

    Inventor： Masahiko MORI ,  Hiroyuki SUZUKI

    IPC: G11B5/842 ,  G11B5/706 ,  H01F1/11

    CPC classification number: G11B5/842 ,  G11B5/70678 ,  H01F1/11

    Abstract: An aspect of the present invention relates to a method of manufacturing hexagonal ferrite magnetic powder. The method of manufacturing hexagonal ferrite magnetic powder comprises wet processing hexagonal ferrite magnetic particles obtained following acid treatment in a water-based solvent to prepare an aqueous magnetic liquid satisfying relation (1) relative to an isoelectric point of the hexagonal ferrite magnetic particles: pH0−pH*≧2.5, wherein, pH0 denotes the isoelectric point of the hexagonal ferrite magnetic particles and pH* denotes a pH of the aqueous magnetic liquid, which is a value of equal to or greater than 2.0, adding a surface-modifying agent comprising an alkyl group and a functional group that becomes an anionic group in the aqueous magnetic liquid to the aqueous magnetic liquid to subject the hexagonal ferrite magnetic particles to a surface-modifying treatment, and removing the water-based solvent following the surface-modifying treatment to obtain hexagonal ferrite magnetic particles.

    Abstract translation: 本发明的一个方面涉及六角铁氧体磁粉的制造方法。 制造六方晶系铁氧体磁粉的方法包括：在水性溶剂中进行酸处理后得到的湿法加工六方晶系铁氧体磁性颗粒，以制备相对于六方晶系铁氧体磁性颗粒的等电点满足关系式（1）的水性磁性液体：pH0- pH *≥2.5，其中，pH0表示六方晶系铁氧体磁性颗粒的等电点，并且pH *表示水性磁性液体的pH值等于或大于2.0，加入表面改性剂包括 烷基和在含水磁性液体中成为阴离子基团的官能团，以使六方晶系铁氧体磁性颗粒进行表面改性处理，并且在表面改性处理之后除去水性溶剂以获得 六角铁氧体磁性颗粒。

    MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM, AND PRODUCTION METHOD THEREOF
    5.
    发明申请
    MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM, AND PRODUCTION METHOD THEREOF 审中-公开

    公开(公告)号：US20200161035A1

    公开(公告)日：2020-05-21

    申请号：US16683301

    申请日：2019-11-14

    Applicant: DOWA ELECTRONICS MATERIALS CO., LTD. ,  FUJIFILM Corporation

    Inventor： Hirohisa OMOTO ,  Shuji KANEDA ,  Satoshi SHIKI ,  Hiroyuki SUZUKI ,  Toshio TADA

    IPC: H01F1/34 ,  C09C1/24

    Abstract: Provided is an Al-containing hexagonal ferrite magnetic powder which produces an excellent durability-improving effect on a magnetic recording medium, wherein uniform pulverization of the magnetic powder can be easily achieved by dispersion treatment in preparation of a magnetic coating material even in cases where the magnetic powder has a small primary particle size or has a composition which is likely to produce hard secondary particles. The magnetic powder for a magnetic recording medium is an Al-containing hexagonal ferrite magnetic powder having an Al/Fe molar ratio of 0.030 to 0.200, and has a particle size distribution in which the volume ratio of particles having a particle size of 30 μm or more as measured by a laser diffraction particle size distribution analyzer with a dispersion pressure of 100 kPa is 5.0% or less, and an activation volume Vact of 1800 nm3 or less.

    OPTICAL ELEMENT AND IMAGE DISPLAY DEVICE
    6.
    发明申请
    OPTICAL ELEMENT AND IMAGE DISPLAY DEVICE 审中-公开
    光学元件和图像显示装置

    公开(公告)号：US20140320948A1

    公开(公告)日：2014-10-30

    申请号：US14327577

    申请日：2014-07-10

    Applicant: FUJIFILM CORPORATION

    Inventor： Hiroyuki SUZUKI ,  Takashi KATO

    IPC: G02B26/00

    CPC classification number: G02B26/005

    Abstract: An optical element (100) includes a cell (30) having: a first substrate (11), at least a portion of at least one surface of which has conductivity; a second substrate (12) which is arranged so as to face the conductive surface of the first substrate (11); a non-conductive oil (16) and a conductive hydrophilic liquid (14) that are provided between the conductive surface of the first substrate and the second substrate; and a hydrophobic insulating film (20) that is provided at least at a portion on the conductive surface side of the first substrate, that contacts the non-conductive oil, and that has a crosslinking structure derived from a polyfunctional compound having two or more polymerizable groups, wherein the shape of an interface between the non-conductive oil and the hydrophilic liquid changes according to the voltage applied between the hydrophilic liquid and the conductive surface (17A) of the first substrate.

    Abstract translation: 光学元件（100）包括具有：第一基板（11）的电池（30），其至少一个表面的至少一部分具有导电性; 第二基板（12），其布置成面对第一基板（11）的导电表面; 设置在第一基板的导电表面和第二基板之间的非导电油（16）和导电亲水性液体（14） 以及疏水性绝缘膜（20），其设置在所述第一基板的与所述非导电油接触的所述导电性表面侧的至少一部分上，并且具有衍生自具有两个以上可聚合的 其中所述非导电油和所述亲水性液体之间的界面的形状根据施加在所述亲水性液体和所述第一基底的所述导电表面（17A）之间的电压而变化。

    MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM
    9.
    发明申请
    MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM 审中-公开
    用于磁记录介质的磁粉

    公开(公告)号：US20160217817A1

    公开(公告)日：2016-07-28

    申请号：US15002599

    申请日：2016-01-21

    Applicant: DOWA ELECTRONICS MATERIALS CO., LTD. ,  FUJIFILM Corporation

    Inventor： Kenji MASADA ,  Hirohisa OMOTO ,  Futoshi NAGASHIMA ,  Hiroyuki SUZUKI ,  Toshio TADA

    IPC: G11B5/72

    CPC classification number: G11B5/70678 ,  H01F1/11

    Abstract: A hexagonal ferrite magnetic powder for a magnetic recording medium, containing magnetic powder contains hexagonal ferrite particles having coated on the surface thereof an aluminum hydroxide material, having a Ba/Fe molar ratio of 0.080 or more, a Bi/Fe molar ratio of 0.025 or more, and an Al/Fe molar ratio of from 0.030 to 0.200. The magnetic powder preferably has an activation volume Vact of from 1,300 to 2,000 nm3. The magnetic powder particularly preferably has a coercive force Hc of from 159 to 287 kA/m (approximately from 2,000 to 3,600 Oe) and a coercivity distribution SFD of from 0.3 to 1.0. The magnetic powder may contain one or two or more kinds of a divalent transition metal M1 and a tetravalent transition metal M2, as an element that replaces Fe of the hexagonal ferrite. The magnetic powder has improved magnetic characteristics including SNR and durability.

    Abstract translation: 含有磁性粉末的磁记录介质的六方晶系铁氧体磁粉包含六方晶系铁氧体颗粒，其表面上涂有BaO / Fe摩尔比为0.080以上，Bi / Fe摩尔比为0.025或 更多，Al / Fe摩尔比为0.030〜0.200。 磁性粉末的活化体积V act优选为1300〜2000nm 3。 磁性粉末特别优选具有159至287kA / m（约2,000至3600Oe）的矫顽力Hc和0.3至1.0的矫顽力分布SFD。 磁性粉末可以含有一种或两种以上的二价过渡金属M1和四价过渡金属M2，作为取代六方晶系铁氧体的Fe的元素。 磁粉具有改善的磁特性，包括SNR和耐久性。

Patent Agency Ranking