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1. 发明授权

US4983421A Method for producing magnetic recording media 失效
标题翻译：磁记录介质的制造方法
公开(公告)号：US4983421A
公开(公告)日：1991-01-08
申请号：US449339
申请日：1989-12-13
申请人： Kouichi Mochizuki , Hiromi Nakahara , Tadashi Yasunaga
发明人： Kouichi Mochizuki , Hiromi Nakahara , Tadashi Yasunaga
IPC分类号： B24B21/00 , B24B29/00 , C23C14/20 , C23C14/56 , C23C14/58 , G11B5/725 , G11B5/84
CPC分类号： C23C14/562 , C23C14/20 , C23C14/58 , G11B5/725 , G11B5/8408
摘要： A method is described for producing a metal thin film type magnetic recording medium having a ferromagnetic metal or alloy thin film provided on a non-magnetic support, comprising the steps of forming said ferromagnetic metal or alloy thin film on said non-magnetic support, and then buffing the surface of said ferromagnetic metal or alloy thin film with nonwoven fabric.
摘要翻译：描述了一种制造具有设置在非磁性载体上的强磁性金属或合金薄膜的金属薄膜型磁记录介质的方法，包括在所述非磁性载体上形成所述强磁性金属或合金薄膜的步骤，以及然后用无纺布抛光所述强磁性金属或合金薄膜的表面。

2. 发明授权

US4324177A Calender roll for supercalender 失效
标题翻译：压光机用于超级压光机
公开(公告)号：US4324177A
公开(公告)日：1982-04-13
申请号：US138076
申请日：1980-04-07
申请人： Nobuo Tsuji , Masaaki Fujiyama , Hiromi Nakahara , Eiichi Tadokoro , Keiji Tanaka , Isao Yamamoto
发明人： Nobuo Tsuji , Masaaki Fujiyama , Hiromi Nakahara , Eiichi Tadokoro , Keiji Tanaka , Isao Yamamoto
IPC分类号： B29C43/00 , B29C33/00 , B29C43/24 , B29C43/46 , B29C43/52 , B29C43/58 , B29C59/00 , D21G1/02 , B30B3/04
CPC分类号： B29C43/46 , D21G1/0233 , B29C43/021
摘要： In a supercalender consisting of a metal roll and an elastic roll and smoothing a web by nipping the web between the metal roll and the elastic roll, the elastic roll satisfies the condition of:Hs(D).gtoreq.-0.1T+85under the condition of 50 to 500 kg/cm of the linear pressure between the metal roll and the elastic roll, where Hs(D) is Shore hardness D-scale of the elastic roll and T is the working temperature (.degree.C.) of the elastic roller that satisfies the condition of 60.gtoreq.T.gtoreq.120.
摘要翻译：在由金属辊和弹性辊组成的超级砑光机中，通过在金属辊和弹性辊之间夹住幅材来平滑纤维网，弹性辊满足以下条件：Hs（D）> / = -0.1T + 85 金属辊和弹性辊之间的线性压力为50至500kg / cm 2的条件，其中Hs（D）为弹性辊的肖氏硬度D标度，T为工作温度（℃）满足条件60> / = T> / = 120的弹性辊。

3. 发明授权

US4874636A Method for preparing magnetic recording medium 失效
标题翻译：磁记录介质的制备方法
公开(公告)号：US4874636A
公开(公告)日：1989-10-17
申请号：US253637
申请日：1988-10-06
申请人： Tsutomu Okita , Hiromi Nakahara , Hiroshi Ogawa
发明人： Tsutomu Okita , Hiromi Nakahara , Hiroshi Ogawa
IPC分类号： C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/73 , G11B5/84
CPC分类号： G11B5/84 , G11B5/7022
摘要： A method for preparing a magnetic recording medium comprising the steps of: dispersing ferromagnetic particles in a binder solution; coating the resulting magnetic coating composition on a nonmagnetic support to provide a magnetic layer; drying the magnetic layer; and providing a calendering treatment with the magnetic layer, wherein the binder solution comprises at least one compound selected from the group consisting of a polyurethane resin having a tan .delta. peak temperature of 30.degree. C. or higher as a result of measuring dynamic viscoelasticity, a cellulose acetate butyrate, a cellulose acetate propionate, and a butyral resin; and when the magnetic layer is dried until the solvent content of the magnetic layer is in the range of from 0.1 to 3 wt %, the calendering treatment is provided with the magnetic layer.
摘要翻译：一种制备磁记录介质的方法，包括以下步骤：将铁磁颗粒分散在粘合剂溶液中; 将所得磁性涂料组合物涂覆在非磁性载体上以提供磁性层; 干燥磁性层; 以及提供与所述磁性层的压延处理，其中所述粘合剂溶液包含至少一种选自具有30℃或更高的tanδ峰值温度的聚氨酯树脂的化合物作为测量动态粘弹性的结果，a 乙酸丁酸纤维素，乙酸丙酸纤维素和丁缩醛树脂; 并且当磁性层被干燥直到磁性层的溶剂含量在0.1至3重量％的范围内时，压延处理被提供有磁性层。

4. 发明授权

US4320159A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4320159A
公开(公告)日：1982-03-16
申请号：US119970
申请日：1980-02-08
申请人： Hiroshi Ogawa , Hiromi Nakahara , Yasuo Tamai
发明人： Hiroshi Ogawa , Hiromi Nakahara , Yasuo Tamai
IPC分类号： G11B5/702 , G11B5/708 , B32B3/02
CPC分类号： G11B5/708 , G11B5/7028 , Y10S428/90 , Y10T428/259 , Y10T428/266 , Y10T428/269 , Y10T428/2982 , Y10T428/31507 , Y10T428/31681 , Y10T428/31703
摘要： The present invention relates to a magnetic recording medium having on a non-magnetic support a magnetic layer comprising a ferromagnetic fine powder in a binder, in which a colloidal silica having a diameter of 7 to 50 m.mu. and methyl groups on the surface thereof is added in a proportion of 2 to 20 parts by weight to 100 parts by weight of the ferromagnetic fine powder during dispersion of the coating composition of the ferromagnetic fine powder.
摘要翻译：本发明涉及一种在非磁性载体上具有包含粘结剂中铁磁细粉末的磁性层的磁记录介质，其中直径为7至50μm的胶体二氧化硅和其表面上的甲基基团为在铁磁性细粉末的涂料组合物的分散期间，以100重量份的铁磁性细粉末的比例添加2〜20重量份。

5. 发明授权

US4076861A Magnetic recording substance 失效
标题翻译：磁记录物质
公开(公告)号：US4076861A
公开(公告)日：1978-02-28
申请号：US646597
申请日：1976-01-05
申请人： Masahiko Furukawa , Hiroshi Ogawa , Masashi Aonuma , Yasuo Tamai , Hiromi Nakahara , Masaaki Igarashi
发明人： Masahiko Furukawa , Hiroshi Ogawa , Masashi Aonuma , Yasuo Tamai , Hiromi Nakahara , Masaaki Igarashi
IPC分类号： G11B5/706 , B22F9/24 , C09D5/23 , C09D7/12 , G11B5/842 , H01F1/06 , C22C1/00 , H01F1/02
CPC分类号： B22F9/24 , G11B5/842
摘要： This invention relates to a magnetic recording substance comprising a support and a magnetic layer containing a ferromagnetic metal powder of liquid phase reduction type in a binder, the ferromagnetic metal powder being obtained by mixing an aqueous slurry containing the ferromagnetic metal powder with an organic solvent capable of forming a minimum boiling azeotropic mixture with water and subjecting the mixture to distillation to remove the water.
摘要翻译：本发明涉及一种磁性记录物质，它包括一个载体和一个在粘合剂中含有液相还原型铁磁性金属粉末的磁性层，该铁磁性金属粉末是通过将含有强磁性金属粉末的含水浆料与一种有机溶剂混合而获得的与水形成最低沸点的共沸混合物并使混合物蒸馏除去水。

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