公开(公告)号：US4643934A

公开(公告)日：1987-02-17

申请号：US698980

申请日：1985-02-07

Applicant: Norifumi Kajimoto ,  Hitoshi Azegami

Inventor： Norifumi Kajimoto ,  Hitoshi Azegami

IPC: C10M105/24 ,  C09D5/23 ,  C09D101/18 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  C10N40/18 ,  G11B5/73 ,  G11B5/735 ,  G11B5/72

CPC classification number: G11B5/735 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24372 ,  Y10T428/24405 ,  Y10T428/25 ,  Y10T428/257 ,  Y10T428/31609 ,  Y10T428/31786 ,  Y10T428/3183 ,  Y10T428/31931 ,  Y10T428/31935 ,  Y10T428/31938

Abstract: In a magnetic recording medium having a magnetic recording coat formed on one side of a base and a back coat on the other side, the back coat consists of a dispersion in a binder of an inorgainc pigment powder having an average particle diameter of 0.2 to 0.5 .mu.m and a Mohs hardness of not greater than 6. The binder consists of a specific copolymer, a rubber-like binder, and a polyisocyanate ingredient. The copolymer consists of vinyl chloride, a vinyl alkyl carboxylate, a monomer copolymerizable with vinyl chloride, and a saponified vinyl alkyl carboxylate and has an OH/CH absorption ratio as determined from its infrared absorption spectrum in the range of 0.2 to 0.7.

Abstract translation: 在具有形成在基材的一侧上的磁性记录涂层和另一侧的背涂层的磁记录介质中，背涂层由平均粒径为0.2至0.5的粘合剂的粘合剂中的分散体组成 μm，莫氏硬度不大于6.粘合剂由特定的共聚物，橡胶状粘合剂和多异氰酸酯成分组成。 共聚物由氯乙烯，羧酸乙烯基酯，可与氯乙烯共聚的单体和皂化的乙烯基烷基羧酸酯组成，并且具有从其红外吸收光谱测定的OH / CH吸收比在0.2至0.7的范围内。

公开(公告)号：US4352859A

公开(公告)日：1982-10-05

申请号：US285288

申请日：1981-07-20

Applicant: Kuniichi Yoda ,  Takehisa Ohkawa ,  Hitoshi Azegami

Inventor： Kuniichi Yoda ,  Takehisa Ohkawa ,  Hitoshi Azegami

IPC: C09D5/23 ,  G11B5/702 ,  B32B27/30

CPC classification number: G11B5/7022 ,  G11B5/7023 ,  Y10S428/90 ,  Y10T428/31609 ,  Y10T428/31786 ,  Y10T428/31935

Abstract: A magnetic recording medium comprises a substrate coated with a magnetic layer comprising a magnetic powder and a binder comprising an urethane resin or a polyester and a vinyl chloride type copolymer of vinyl chloride-vinyl acetate-vinyl alcohol copolymer, vinyl chloride-vinyl acetate-maleic acid copolymer or vinyl chloride-vinylidene chloride copolymer having a polymerization degree of up to 300.

Abstract translation: 磁记录介质包括涂覆有磁性层的基材和包含聚氨酯树脂或聚酯的粘合剂和氯乙烯 - 乙酸乙烯酯 - 乙烯醇共聚物的氯乙烯型共聚物，氯乙烯 - 乙酸乙烯酯 - 马来酸 酸共聚物或氯乙烯 - 偏二氯乙烯共聚物，聚合度可达300。

公开(公告)号：US4340644A

公开(公告)日：1982-07-20

申请号：US95647

申请日：1979-11-19

Applicant: Hiroshi Ota ,  Eiji Horigome ,  Hitoshi Azegami

Inventor： Hiroshi Ota ,  Eiji Horigome ,  Hitoshi Azegami

IPC: C08G18/40 ,  C08G18/62 ,  C09D5/23 ,  C09D127/06 ,  C09D131/04 ,  G11B5/702 ,  G11B5/68

CPC classification number: G11B5/7028 ,  C08G18/4063 ,  C08G18/6212 ,  C09D127/06 ,  C09D131/04 ,  G11B5/7023 ,  Y10S428/90 ,  Y10T428/31565 ,  Y10T428/31609 ,  Y10T428/31797 ,  Y10T428/31935

Abstract: A magnetic recording medium consisting of a base coated with magnetic coating material which is a dispersion of magnetic particles using a vinyl chloride-vinyl acetate copolymer and a polyester resin as binder, characterized by the addition of a vinyl chloride-vinyl acetate copolymer containing at least 10% of vinyl alcohol. The use of the last-mentioned copolymer improves the frequency response characteristic as well as the mechanical properties such as the running quality.

Abstract translation: 一种磁性记录介质，其由涂覆有磁性涂层材料的基底组成，该磁性涂层材料是使用氯乙烯 - 乙酸乙烯酯共聚物的磁性颗粒的分散体和作为粘合剂的聚酯树脂，其特征在于，加入至少含有氯乙烯 - 乙酸乙烯酯共聚物 10％乙烯醇。 使用最后提到的共聚物改善了频率响应特性以及诸如运行质量的机械性能。

公开(公告)号：US4315057A

公开(公告)日：1982-02-09

申请号：US192697

申请日：1980-10-01

Applicant: Eiji Horigome ,  Hitoshi Azegami ,  Hiroshi Ohta

Inventor： Eiji Horigome ,  Hitoshi Azegami ,  Hiroshi Ohta

IPC: G11B5/708 ,  C09D5/23 ,  C09D7/12 ,  G11B5/702 ,  H01F10/02 ,  B05D5/12

CPC classification number: G11B5/7028 ,  Y10S428/90

Abstract: A magnetic recording medium comprises a substrate coated with a magnetic layer comprising a magnetic powder and a binder and a rust inhibitor at a ratio of more than 0.1 wt. % based on resins of the binder.

Abstract translation: 磁记录介质包括涂覆有包含磁性粉末和粘合剂的磁性层的基材和防垢剂，其比例大于0.1wt。 ％，基于粘合剂的树脂。

公开(公告)号：US4291100A

公开(公告)日：1981-09-22

申请号：US161573

申请日：1980-06-20

Applicant: Eiji Horigome ,  Hiroshi Ota ,  Hitoshi Azegami

Inventor： Eiji Horigome ,  Hiroshi Ota ,  Hitoshi Azegami

IPC: C09D5/23 ,  C09D7/12 ,  G11B5/71 ,  H01F10/02

CPC classification number: G11B5/71 ,  Y10S428/90 ,  Y10T428/31573 ,  Y10T428/31576 ,  Y10T428/3158 ,  Y10T428/3192 ,  Y10T428/31935

Abstract: A magnetic recording medium comprises a substrate coated with a magnetic layer wherein a magnetic powder is orientated in a binder and a polyoxyethylenesorbitane higher fatty acid ester surfactant.

Abstract translation: 磁记录介质包括涂覆有磁性层的基底，其中磁性粉末定向在粘合剂中，聚氧乙烯山梨糖醇高级脂肪酸酯表面活性剂。

公开(公告)号：US4234438A

公开(公告)日：1980-11-18

申请号：US37779

申请日：1979-05-10

Applicant: Eiji Horigome ,  Hiroshi Ota ,  Hitoshi Azegami

Inventor： Eiji Horigome ,  Hiroshi Ota ,  Hitoshi Azegami

IPC: C08G18/62 ,  C08L75/04 ,  C09D5/23 ,  G11B5/702 ,  B05D5/12

CPC classification number: G11B5/7023 ,  C08G18/6212 ,  C08L75/04 ,  G11B5/7022

Abstract: A magnetic recording medium comprises a substrate coated with a magnetic coating composition comprising nitrocellulose impregnated with a vinyl chloride-vinyl acetate-vinyl alcohol copolymer having a content of vinyl alcohol component of 8 wt. % or more, a magnetic powder, a solvent, and a thermal crosslinking agent.

Abstract translation: 磁记录介质包括涂覆有磁性涂层组合物的基材，该组合物包含浸渍有乙烯醇组分含量为8重量％的氯乙烯 - 乙酸乙烯酯 - 乙烯醇共聚物的硝化纤维素。 ％以上，磁性粉末，溶剂和热交联剂。

公开(公告)号：USD404654S

公开(公告)日：1999-01-26

申请号：US080021

申请日：1997-11-26

Applicant: Toshiaki Kume ,  Takeshi Wada ,  Hitoshi Azegami

Designer： Toshiaki Kume ,  Takeshi Wada ,  Hitoshi Azegami

公开(公告)号：US5837744A

公开(公告)日：1998-11-17

申请号：US674083

申请日：1996-07-01

Applicant: Naoyuki Nagashima ,  Hitoshi Azegami ,  Yasufumi Takasugi

Inventor： Naoyuki Nagashima ,  Hitoshi Azegami ,  Yasufumi Takasugi

IPC: B41M1/30 ,  B41M7/00 ,  C08F2/46

CPC classification number: B41M1/305 ,  B41M7/0081

Abstract: Polyoxymethylene articles having a surface printable with an ultraviolet-curing ink are obtained by molding a polyoxymethylene and treating the molded article by ultraviolet irradiation, corona discharge, or electron-beam radiation until the surface has an X-ray photoelectron spectrum in which the ratio of the �C--O!.sub.n bond peak at 302 eV to the C--C bond peak at 305 eV, i.e., the �C--O!.sub.n bond peak/C--C bond peak ratio, is at least 2.5.

Abstract translation: 具有可用紫外线固化油墨印刷的表面的聚甲醛制品通过模塑聚甲醛并通过紫外线照射，电晕放电或电子束辐射处理模塑制品而获得，直到表面具有X射线光电子能谱 在305eV处的302eV到CC键峰的[CO] n键峰，即[CO] n键峰/ CC键峰比，为至少2.5。

公开(公告)号：US4837083A

公开(公告)日：1989-06-06

申请号：US95298

申请日：1987-09-10

Applicant: Kazuhiro Kuroda ,  Kazushi Tanaka ,  Hitoshi Azegami

Inventor： Kazuhiro Kuroda ,  Kazushi Tanaka ,  Hitoshi Azegami

IPC: G11B5/70 ,  C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/708

CPC classification number: G11B5/708 ,  Y10S428/90 ,  Y10T428/257

Abstract: A magnetic recording medium comprising a plastic base and a magnetic layer formed thereon by applying a dispersion of a ferromagnetic powder in a resin binder, the magnetic layer containing the ferromagnetic powder which has a BET specific surface area of at least 35 m.sup.2 /g and .alpha.-Al2O3 particles having a particle size not exceeding one half the mean particle diameter of the ferromagnetic powder and less than 0.1 .mu.m in diameter, the .alpha.-Al2O3 particles being added in an amount greater than 5% but less than 15% by weight on the basis of the weight of the ferromagnetic powder. The magnetic powder is a metallic magnetic powder containing iron as the major constituent. The .alpha.-Al2O3 particles are cube-shaped.

Abstract translation: 一种磁记录介质，包括通过将铁磁粉末的分散体施加在树脂粘合剂中而形成在其上的磁性层，所述磁性层含有BET比表面积至少为35m 2 / g的铁磁性粉末和α -Al2O3颗粒的粒径不超过铁磁粉末的平均粒径的一半，直径小于0.1μm，α-Al 2 O 3颗粒以大于5％但小于15％重量的量加入 铁粉的重量的基础。 磁粉是以铁为主要成分的金属磁性粉末。 α-Al2O3颗粒是立方体。

公开(公告)号：US4460653A

公开(公告)日：1984-07-17

申请号：US544804

申请日：1983-10-24

Applicant: Hitoshi Azegami ,  Hiroshi Kawahara ,  Fujio Shibata

Inventor： Hitoshi Azegami ,  Hiroshi Kawahara ,  Fujio Shibata

IPC: G11B5/702 ,  H01F10/02

CPC classification number: G11B5/7023 ,  G11B5/7022 ,  Y10S428/90 ,  Y10T428/31609 ,  Y10T428/31935

Abstract: A magnetic recording medium, comprising a magnetic layer and a non-magnetic substrate therefor, which magnetic layer is formed by dispersing magnetic powder in a vehicle formed of a copolymer containing vinyl chloride, another monomer copolymerizable with said vinyl chloride, a vinyl ester of an alkanoic acid and a saponification product thereof and having an OH/CH absorption ratio of 0.2 to 0.7 in the infrared absorption spectrum, and a rubbery binder.

Abstract translation: 一种磁记录介质，包括磁性层和非磁性基底，该磁性层通过将磁性粉末分散在由含有氯乙烯的共聚物形成的载体中形成，另一种可与所述氯乙烯共聚的单体， 链烷酸和皂化产物，并且在红外吸收光谱中OH / CH吸收比为0.2至0.7，和橡胶粘合剂。