公开(公告)号：US5947767A

公开(公告)日：1999-09-07

申请号：US984712

申请日：1997-12-03

申请人： Shigeyasu Kitamura ,  Akira Kasuga ,  Shigenori Koike

发明人： Shigeyasu Kitamura ,  Akira Kasuga ,  Shigenori Koike

IPC分类号： H01R13/60

CPC分类号： H01R12/7029 ,  H01R23/6873

摘要： An electrical connector has an insulative housing, a fixture, and a shield. The fixture is used for fixing this insulative housing on a circuit board, and the shield is to cover the insulative housing. The insulative housing, which is made of an electrically insulating material, comprises a main body and an engaging portion, which protrudes forward from the main body to engage with a matable connector. The insulative housing also comprises fixture retaining slots, which extend through the main body in the vertical or to-and-fro direction at the lateral ends of the main body of the housing. Into each of these fixture retaining slots, a fixture, which is made of an electrically conductive metallic material, is press-fit to fix the insulative housing onto a circuit board. The shield, which is made of an electrically conductive metallic material, comprises a peripheral portion and contact portions in a one-piece body. The peripheral portion covers the perimeter of the engaging portion of the insulative housing, and each of the contact portions extends into a respective fixture retaining slot. With this construction, each fixture is retained in contact with a respective contact portion in a respective fixture retaining slot grounding the shield when the electrical connector is mounted on a circuit board with the fixtures being surface-mounted onto grounding pathways on the circuit board.

摘要翻译： 电连接器具有绝缘壳体，夹具和屏蔽件。 该固定装置用于将该绝缘壳体固定在电路板上，屏蔽罩覆盖绝缘壳体。 由电绝缘材料制成的绝缘外壳包括主体和接合部分，其从主体向前突出以与可配接的连接器接合。 绝缘壳体还包括固定器保持槽，其在壳体的主体的侧端处在垂直或往复方向上延伸穿过主体。 在这些夹具保持槽的每一个中，由导电金属材料制成的夹具被压配合以将绝缘壳体固定到电路板上。 由导电金属材料制成的屏蔽件包括一体式的周边部分和接触部分。 周边部分覆盖绝缘壳体的接合部分的周边，并且每个接触部分延伸到相应的夹具保持槽中。 利用这种结构，当电连接器安装在电路板上时，每个固定装置与相应的固定保持槽中相应的接触部分保持接触，其中固定装置被表面安装到电路板上的接地路径上。

公开(公告)号：US06293823B1

公开(公告)日：2001-09-25

申请号：US09677025

申请日：2000-09-29

申请人： Akira Kasuga

发明人： Akira Kasuga

IPC分类号： H01R1373

CPC分类号： H01R12/7047

摘要： A nut-fixing part 20 formed in a housing 10 has a nut-holding room 26, where a nut 30 is insertable and detachable by a movement in a direction perpendicular to the thickness direction of the nut 30. At the entrance of the nut-holding room 26, a projection 27 is provided to prevent the inserted nut 30 from sliding out. By this construction, this type of connector can be miniaturized further. In addition, when this connector mounted on a circuit board is heated in a furnace for soldering electrical connections, even if the housing experiences a stress relief, there is no possibility of any nut falling off from the housing.

摘要翻译： 形成在壳体10中的螺母固定部20具有螺母保持室26，螺母30可以通过沿与螺母30的厚度方向垂直的方向的移动而被插入和拆卸。在螺母固定部20的入口处， 保持室26设置有突起27，以防止插入的螺母30滑出。 通过这种结构，这种类型的连接器可以进一步小型化。 此外，当安装在电路板上的连接器在用于焊接电气连接的炉中被加热时，即使壳体经受应力消除，也不可能有任何螺母从壳体上脱落。

公开(公告)号：US5041336A

公开(公告)日：1991-08-20

申请号：US251437

申请日：1988-09-30

申请人： Takao Ohya ,  Yasuo Nishikawa ,  Akihiro Matsufuji ,  Akira Kasuga ,  Kiyomi Ejiri

发明人： Takao Ohya ,  Yasuo Nishikawa ,  Akihiro Matsufuji ,  Akira Kasuga ,  Kiyomi Ejiri

IPC分类号： C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C10M105/34 ,  C10M105/38 ,  C10N40/18 ,  G11B5/702 ,  G11B5/708 ,  G11B5/71

CPC分类号： G11B5/71 ,  G11B5/702 ,  G11B5/7021 ,  G11B5/7023 ,  Y10S428/90 ,  Y10T428/31551 ,  Y10T428/3158 ,  Y10T428/31786

摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer comprising a ferromagnetic powder dispersed in a binder,wherein said binder comprises a polymer containing a polar group selected from --SO.sub.3 M, --OSO.sub.3 M, --COOM, ##STR1## where M represents a hydrogen atom, Li, Na, K or NR.sub.4 where R represents a hydrogen atom or an alkyl group, and M' represents a hydrogen atom, Li, Na, K, an alkyl group or NR.sub.4 where R represents a hydrogen atom or an alkyl group, andsaid magnetic layer contains at least one fatty acid ester compound represented by formula (I), at least one fatty acid ester compound represented by formula (II), and at least one fatty acid having from 11 to 35 carbon atoms: ##STR2## wherein R.sup.1 represents a linear or branched chain hydrocarbon group having from 11 to 35 carbon atoms, R.sup.2 represents a linear or branched chain hydrocarbon group having from 1 to 8 carbon atoms or a phenyl group, X represents a hydrogen atom or a methyl group, and n represents an integer of from 2 to 200; ##STR3## wherein R.sup.3 represents a linear or branched chain hydrocarbon group having from 11 to 35 carbon atoms and R.sup.4 represents a linear or branched chain hydrocarbon group having from 1 to 8 carbon atoms.

摘要翻译： 一种包含非磁性载体的磁记录介质，其上设置有包含分散在粘合剂中的铁磁粉末的磁性层，其中所述粘合剂包含含有选自-SO 3 M，-OSO 3 M，-COOM，中的极性基团的聚合物，其中 M表示氢原子，Li，Na，K或NR4，其中R表示氢原子或烷基，M'表示氢原子，Li，Na，K，烷基或NR4，其中R表示氢原子或 烷基，所述磁性层含有至少一种由式（I）表示的脂肪酸酯化合物，至少一种由式（II）表示的脂肪酸酯化合物和至少一种具有11至35个碳原子的脂肪酸 （Ⅰ）其中R1表示碳原子数为11〜35的直链或支链烃基，R2表示碳原子数为1〜8的直链或支链烃基或苯基，X表示氢原子 原子或甲基， n表示2〜200的整数， （II）其中R 3表示具有11至35个碳原子的直链或支链烃基，R 4表示具有1至8个碳原子的直链或支链烃基。

公开(公告)号：US4916024A

公开(公告)日：1990-04-10

申请号：US390503

申请日：1989-08-01

申请人： Akira Kasuga ,  Masaaki Fujiyama

发明人： Akira Kasuga ,  Masaaki Fujiyama

IPC分类号： C09D5/23 ,  C09C1/48 ,  C09D7/12 ,  G11B5/73 ,  G11B5/738

CPC分类号： G11B5/738 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/257 ,  Y10T428/265

摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon an intermediate layer comprising carbon black, a binder and ferromagnetic particles in a weight ratio of from 5% to 25% based on the carbon black; and a magnetic layer provided on said intermediate layer, wherein said magnetic layer comprises ferromagnetic particles and a binder.

摘要翻译： 一种磁记录介质，包括非磁性载体，所述非磁性载体在其上设置有基于炭黑的重量比为5％至25％的包含炭黑，粘合剂和铁磁性颗粒的中间层; 以及设置在所述中间层上的磁性层，其中所述磁性层包括铁磁颗粒和粘合剂。

公开(公告)号：US4784907A

公开(公告)日：1988-11-15

申请号：US944068

申请日：1986-12-22

申请人： Akihiro Matsufuji ,  Akira Kasuga ,  Shigeo Komine ,  Yasuyuki Yamada ,  Hajime Miyatsuka

发明人： Akihiro Matsufuji ,  Akira Kasuga ,  Shigeo Komine ,  Yasuyuki Yamada ,  Hajime Miyatsuka

IPC分类号： C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  C10M107/46 ,  C10N40/18 ,  G11B5/702 ,  G11B5/708 ,  G11B5/71

CPC分类号： G11B5/71 ,  G11B5/7023 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/31609 ,  Y10T428/31935

摘要： In a magnetic recording medium such as a video tape comprising a nonmagnetic support and a magnetic recording layer provided on the support, said magnetic recording layer comprising a binder and a ferromagnetic powder dispersed therein, the improvement in which:the magnetic recording layer comprises a fatty acid ester lubricant and a lubricant other than the fatty acid ester lubricant;the binder is composed of a resin component comprising a resin containing a repeating unit which has a polar group and having a glass transition point of not lower than 50.degree. C., and a resin containing a repeating unit which has a polar group and having a glass transition point of lower than 50.degree. C; andat least one resin of the resins contains a repeating unit having a polar group such as --SO.sub.3 M, --OSO.sub.3 M or --PO(OM').sub.2, wherein M is hydrogen or an alkali metal atom, and M' is hydrogen, an alkali metal atom or a lower hydrocarbon group.

摘要翻译： 在诸如包括非磁性载体和设置在载体上的磁记录层的录像带的磁记录介质中，所述磁记录层包括粘合剂和分散在其中的铁磁粉末，其改进在于：磁记录层包含脂肪 酸酯润滑剂和脂肪酸酯润滑剂以外的润滑剂; 粘合剂由包含含有极性基团并且玻璃化转变温度不低于50℃的重复单元的树脂的树脂组分和含有极性基团并具有极性基团的重复单元的树脂组成 玻璃化转变点低于50℃; 并且所述树脂的至少一种树脂含有具有极性基团的重复单元，例如-SO 3 M，-OSO 3 M或-PO（OM'）2，其中M为氢或碱金属原子，M'为氢，碱 金属原子或低级烃基。

公开(公告)号：US4784914A

公开(公告)日：1988-11-15

申请号：US944114

申请日：1986-12-22

申请人： Akihiro Matsufuji ,  Akira Kasuga ,  Shigeo Komine ,  Yasuyuki Yamada ,  Hajime Miyatsuka

发明人： Akihiro Matsufuji ,  Akira Kasuga ,  Shigeo Komine ,  Yasuyuki Yamada ,  Hajime Miyatsuka

IPC分类号： C08G18/08 ,  C08L75/04 ,  C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702

CPC分类号： G11B5/7022 ,  C08G18/0819 ,  C08L75/04 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/31529 ,  Y10T428/31609 ,  Y10T428/31935

摘要： A magnetic recording medium comprising a nonmagnetic support and a magnetic recording layer provided on the support, said magnetic recording layer comprising a binder and a ferromagnetic powder dispersed therein, which is characterized in that said binder is composed of a resin component comprising:a vinyl chloride copolymer containing a repeating unit having at least one polar group selected from the group consisting of --SO.sub.3 M, --OSO.sub.3 M, --COOM and --PO(OM').sub.2, wherein M is hydrogen or an alkali metal atom, and M' is any one of hydrogen, an alkali metal atom and a lower hydrocarbon group, and a repeating unit having an epoxy group; anda polyurethane resin containing a repeating unit having at least one polar group selected from the group consisting of --SO.sub.3 M, --OSO.sub.3 M, --COOM and --PO(OM').sub.2, wherein M and M' have the same meanings as defined above.

摘要翻译： 一种磁记录介质，包括设置在所述载体上的非磁性载体和磁记录层，所述磁记录层包含粘合剂和分散在其中的铁磁性粉末，其特征在于，所述粘合剂由树脂组分构成，所述树脂组分包括：氯乙烯 含有具有至少一个选自-SO 3 M，-OSO 3 M，-COOM和-PO（OM'）2的极性基团的重复单元的共聚物，其中M是氢或碱金属原子，M'是任何一个 的氢，碱金属原子和低级烃基，以及具有环氧基的重复单元; 和含有至少一个选自-SO 3 M，-OSO 3 M，-COOM和-PO（OM'）2的极性基团的重复单元的聚氨酯树脂，其中M和M'具有与上述相同的含义。

公开(公告)号：US4701364A

公开(公告)日：1987-10-20

申请号：US863155

申请日：1986-05-14

申请人： Takahito Miyoshi ,  Akira Kasuga ,  Masaaki Fujiyama

发明人： Takahito Miyoshi ,  Akira Kasuga ,  Masaaki Fujiyama

IPC分类号： G11B5/41 ,  G11B5/627 ,  G11B5/70

CPC分类号： G11B5/41 ,  G11B5/627 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/25 ,  Y10T428/265 ,  Y10T428/31786

摘要： A tape for cleaning magnetic head comprising a support and a cleaning layer coated on at least one surface of said support, which is characterized in that said cleaning layer contains a ferromagnetic metal powder as abrasive, the surface of said cleaning layer is a surface of center line average height of not less than 0.025 .mu.m as cut-off value of 0.08 mm, and said tape has a stiffness of not more than 2.

摘要翻译： 一种用于清洁磁头的磁带，其特征在于，所述清洁层包含作为磨料的铁磁金属粉末，所述清洁层的表面是中心的表面，所述磁带包括支撑体和涂覆在所述支撑体的至少一个表面上的清洁层 线平均高度不小于0.025μm，截止值为0.08mm，所述带的刚度不大于2。

公开(公告)号：US4646179A

公开(公告)日：1987-02-24

申请号：US613066

申请日：1984-05-22

申请人： Yasuo Nagashima ,  Akira Kasuga

发明人： Yasuo Nagashima ,  Akira Kasuga

IPC分类号： G11B5/73 ,  G11B5/82 ,  G11B5/016 ,  G11B5/012 ,  G11B5/54 ,  G11B23/03

CPC分类号： G11B5/825 ,  Y10T428/265 ,  Y10T428/31518

摘要： A flexible magnetic disc for use in combination with a magnetic head assembly which includes a regulator plate and performs magnetic recording or playback by protruding a magnetic head beyond a predetermined support level of a rotatable sheet of magnetic recording medium at least by an amount which is substantially equal to a total thickness of the recording medium. Assuming that the recording medium has a total thickness of t millimeters (mm) and a Young's modulus of E grams per square millimeter (g/mm.sup.2), a product of the Youngs's modulus E and the third power of the total thickness t, i.e. Et.sup.3, lies in a range between a lower limit of 2.5 g.mm and an upper limit of 36 g.mm inclusive of the lower and upper limits.

摘要翻译： 一种用于与磁头组件组合使用的柔性磁盘，磁头组件包括调节板，并通过将磁头突出超过可旋转的磁性记录介质片的预定支撑水平来进行磁记录或重放，至少基本上 等于记录介质的总厚度。 假设记录介质具有t毫米（mm）的总厚度和E克/平方毫米（g / mm 2）的杨氏模量，杨氏模量E与总厚度t的第三功率的乘积即Et 3 位于2.5g.mm的下限和36g.mm的上限（包括下限和上限）之间的范围内。

公开(公告)号：US4481253A

公开(公告)日：1984-11-06

申请号：US448651

申请日：1982-12-10

申请人： Akihiro Matsufuji ,  Shizuo Umemura ,  Akira Kasuga ,  Hajime Miyatuka ,  Goro Akashi

发明人： Akihiro Matsufuji ,  Shizuo Umemura ,  Akira Kasuga ,  Hajime Miyatuka ,  Goro Akashi

IPC分类号： B22F9/22 ,  G11B5/706 ,  H01F1/06 ,  H01F10/02

CPC分类号： B22F9/22 ,  G11B5/70615 ,  H01F1/065 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/265 ,  Y10T428/266 ,  Y10T428/31678

摘要： A process for preparing a ferromagnetic metal powder and a magnetic recording medium utilizing that powder are disclosed. The ferromagnetic metal powder is prepared by heat-treating an acicular iron oxyhydroxide or an acicular iron oxide powder prepared from the acicular iron oxyhydroxide in a non-reducing gas at a temperature of from 300.degree. C. to 1000.degree. C. or in a reducing gas at a temperature of from 150.degree. C. to 500.degree. C. The heat-treated material is washed and then reduced under heating. The ferromagnetic metal powder prepared in this manner is dispersed in a binder and cated on a non-magnetic base to form a magnetic recording medium. By utilizing the washing step followed by heat-treating preparing the ferromagnetic metal powder a large amount of water soluble impurities are removed from the metal powder. The metal powder produced according to this disclosed process as excellent oxidation stability and ability to resist corrosion. Accordingly, the magnetic recording medium prepared utilizing this powder has an excellent ability to resist oxidation and corrosion even when subjected to adverse conditions.

摘要翻译： 公开了一种制备铁磁金属粉末和利用该粉末的磁记录介质的方法。 通过在300〜1000℃的温度或非还原性气体中以非还原性气体热处理由针状羟基氧化铁制成的针状羟基氧化铁或针状氧化铁粉末，制备强磁性金属粉末。 在150〜500℃的温度下进行气体洗涤。将热处理材料洗涤，然后在加热下还原。 以这种方式制备的铁磁性金属粉末分散在粘合剂中并在非磁性基底上形成磁记录介质。 通过利用洗涤步骤进行热处理，制备铁磁性金属粉末，从金属粉末中除去大量的水溶性杂质。 根据该公开方法制备的金属粉末具有优异的氧化稳定性和耐腐蚀性。 因此，利用这种粉末制备的磁记录介质即使在不利条件下也具有优异的抵抗氧化和腐蚀的能力。

公开(公告)号：US4409299A

公开(公告)日：1983-10-11

申请号：US353789

申请日：1982-03-02

申请人： Chiaki Mizuno ,  Yasuo Tamai ,  Akira Kasuga

发明人： Chiaki Mizuno ,  Yasuo Tamai ,  Akira Kasuga

IPC分类号： C09D5/23 ,  G11B5/702 ,  G11B5/70 ,  B32B27/30 ,  H01F10/02

CPC分类号： G11B5/7023 ,  Y10S428/90 ,  Y10T428/31797 ,  Y10T428/31935

摘要： A magnetic recording medium comprising a nonmagnetic flexible base and a magnetic recording layer formed thereon which is mainly composed of fine ferromagnetic particles and a binder. The binder contains both a vinyl chloride/vinyl acetate/vinyl alcohol copolymer and a vinyl chloride/vinylidene chloride copolymer.

摘要翻译： 一种包括非磁性柔性基底和形成在其上的磁记录层的磁记录介质，其主要由细铁磁颗粒和粘合剂组成。 粘合剂含有氯乙烯/乙酸乙烯酯/乙烯醇共聚物和氯乙烯/偏二氯乙烯共聚物。