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1. 发明授权

US4880693A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4880693A
公开(公告)日：1989-11-14
申请号：US170225
申请日：1988-03-21
申请人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Tsutomu Okita , Takashi Yoneyama
发明人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Tsutomu Okita , Takashi Yoneyama
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25
摘要： A magnetic recording medium comprising a support having provided on one surface thereof a magnetic recording layer and on the other surface thereof a backing layer containing non-magnetic particles dispersed in a binder, wherein said binder comprises a vinyl chloride/vinyl acetate copolymer resin containing at least one group represented by formula (I) or (II): ##STR1## wherein X represents a --COO-- group, a --CONH-- group, or a --C.sub.6 H.sub.4 -- group; n represents an integer of from 1 to 10; R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, or an alkyl derivative having from 1 to 10 carbon atoms, or R.sub.1, R.sub.2, and R.sub.3 may be combined to each other to form a heterocycric ring; and Y.sup..crclbar. represents a halogen atom, ClO.sub.4.sup..crclbar., or HgI.sub.3.sup..crclbar. ; or Y.sup..crclbar. is bound to R.sub.2, R.sub.2 represents an alkylene group having from 1 to 10 carbon atoms, and Y.sup..crclbar. represents a --COO.sup..crclbar. group, an --SO.sub.3.sup..crclbar. group, or an --OSO.sub.3.sup..crclbar. group.
摘要翻译：一种磁记录介质，包括在其一个表面上设置有磁记录层的支撑体，在另一表面上具有包含分散在粘合剂中的非磁性颗粒的背衬层，其中所述粘合剂包含氯乙烯/乙酸乙烯酯共聚物树脂，其含有（I）或（II）表示的至少一个基团：其中X表示-COO-基团，-CONH-基团或-C 6 H 4 - 基团; n表示1〜10的整数， R1，R2和R3各自表示氢原子，具有1至10个碳原子的烷基或具有1至10个碳原子的烷基衍生物，或者R1，R2和R3可以彼此结合形成杂环; Y（ - ）表示卤素原子，ClO 4（ - ）或HgI 3（ - ）; 或Y（ - ）与R 2结合，R 2表示具有1〜10个碳原子的亚烷基，Y（ - ）表示-COO（ - ）基，-SO 3（ - ）基或-OSO 3（ - ）组。

2. 发明授权

US4880692A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4880692A
公开(公告)日：1989-11-14
申请号：US171360
申请日：1988-03-21
申请人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Tsutomu Okita , Kazuko Hanai
发明人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Tsutomu Okita , Kazuko Hanai
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/265
摘要： A magnetic recording medium comprising a support having provided on one surface thereof a magnetic recording layer containing ferromagnetic particles dispersed in a binder and on the other surface thereof a backing layer, wherein said binder comprises a vinyl chloride/vinyl acetate copolymer reisn containing at least one group represented by formula (I) or (II): ##STR1## wherein X represents a --COO-- group, a --CONH-- group, or a --C.sub.6 H.sub.4 -- group; x represents an integer of from 1 to 10; R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, or an alkyl derivative having from 1 to 10 carbon atoms, or R.sub.1, R.sub.2, and R.sub.3 may be combined to each other to form a heterocycric ring; and Y.sup..crclbar. represents a halogen atom, ClO.sub.4.sup..crclbar., or HgI.sub.3.sup..crclbar. ; or Y.sup..crclbar. is bound to R.sub.2, R.sub.2 represents an alkylene group having from 1 to 10 carbon atoms, and Y.sup..crclbar. represents a --COO.sup..crclbar. group, an --SO.sub.3.sup..crclbar. group, or an --OSO.sub.3.sup..crclbar. group.
摘要翻译：一种磁记录介质，其包括在其一个表面上设置有包含分散在粘合剂中的铁磁颗粒的磁记录层和在其另一表面上的背衬层的支撑体，其中所述粘合剂包括含有至少一个的氯乙烯/乙酸乙烯酯共聚物（I）或（II）表示的基团：其中X表示-COO-基团，-CONH-基团或-C 6 H 4 - 基团; x表示1〜10的整数， R1，R2和R3各自表示氢原子，具有1至10个碳原子的烷基或具有1至10个碳原子的烷基衍生物，或者R1，R2和R3可以彼此结合形成杂环; Y（ - ）表示卤素原子，ClO 4（ - ）或HgI 3（ - ）; 或Y（ - ）与R 2结合，R 2表示具有1〜10个碳原子的亚烷基，Y（ - ）表示-COO（ - ）基，-SO 3（ - ）基或-OSO 3（ - ）组。

3. 发明授权

US4693929A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4693929A
公开(公告)日：1987-09-15
申请号：US784425
申请日：1985-10-04
申请人： Katsumi Ryoke , Masatoshi Takahashi , Takashi Yoneyama , Yasuo Nishikawa , Eiichi Tadokoro
发明人： Katsumi Ryoke , Masatoshi Takahashi , Takashi Yoneyama , Yasuo Nishikawa , Eiichi Tadokoro
IPC分类号： C09D5/23 , C09D101/18 , C09D127/04 , C09D127/06 , C09D163/00 , C09D175/00 , C09D175/04 , G11B5/73 , G11B5/735 , G11B5/70 , G11B5/71
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/31663
摘要： A magnetic recording medium comprising a magnetic layer coated on one side of a non-magnetic support and a backing layer coated on the opposite side of the non-magnetic support, wherein the backing layer comprises non-magnetic particles, a binder and silicone having a viscosity of from 1 to 50 CS (centistokes) at 25.degree. C. in an amount of from 0.01 to 3 wt. % based on the non-magnetic particles, wherein the non-magnetic particles contain carbon black in an amount of at least 50 wt. % based on the total amount of the non-magnetic particles, and wherein 25 wt. % or more of the carbon black has an average particle size of from 150 to 1,000 m.mu..
摘要翻译：一种磁记录介质，包括涂覆在非磁性载体的一侧的磁性层和涂覆在非磁性载体的相反侧上的背衬层，其中所述背衬层包含非磁性颗粒，粘合剂和具有在25℃下的粘度为1至50CS（厘沲），其量为0.01至3重量％。基于非磁性颗粒的％，其中非磁性颗粒含有至少50重量％的碳黑。基于非磁性颗粒的总量的％，并且其中25重量％炭黑的％以上的平均粒径为150〜1000μm。

4. 发明授权

US5008147A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5008147A
公开(公告)日：1991-04-16
申请号：US216566
申请日：1988-07-08
申请人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Kazuo Hasumi
发明人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Kazuo Hasumi
IPC分类号： C09D5/23 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/265 , Y10T428/30 , Y10T428/31609
摘要： A magnetic recording medium comprising a nonmagnetic support having on one surface thereof a magnetic layer and on the opposite surface thereof a backing layer comprising nonmagnetic particles dispersed in a binder, wherein said binder of said backing layer comprises from about 20 to 90 wt % of polycarbonate polyurethane, and said backing layer comprises from about 40 to 200 parts by weight of said binder per 100 parts by weight of said nonmagnetic particles.
摘要翻译：一种磁记录介质，其包括在其一个表面上具有磁性层的非磁性载体，并且在其相对表面上具有包含分散在粘合剂中的非磁性颗粒的背衬层，其中所述背衬层的所述粘合剂包含约20至90重量％的聚碳酸酯聚氨酯和所述背衬层每100重量份所述非磁性颗粒包含约40至200重量份的所述粘合剂。

5. 发明授权

US4988562A Magnetic recording media 失效
标题翻译：磁记录媒体
公开(公告)号：US4988562A
公开(公告)日：1991-01-29
申请号：US259366
申请日：1988-10-18
申请人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto
发明人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto
IPC分类号： C09D5/23 , G11B5/708
CPC分类号： G11B5/708 , Y10S428/90 , Y10T428/25 , Y10T428/30
摘要： A magnetic recording medium having excellent running properties and excellent durability is disclosed, which comprises a non-magnetic support having thereon a magnetic layer comprising a ferromagnetic powder and carbon black, said carbon black being a mixture which contains high structure furnace carbon black and acetylene black in the weight ratio of the former to the latter of from 95:5 to 45:55, and said high structure furnace carbon black having properties satisfying the general equations (I) or (II) below:0 120, Y.ltoreq.0.01125X.sup.2 -2.005X+229 (II)wherein Y is the amount of DBP oil absorbed (Ml/100 grams) by said high structure carbon furnace black, X is the specific surface area (m.sup.2 /gram) of said high structure carbon furnace black, and Y.gtoreq.120, wherein W is the amount of DBP oil adsorbed (ml/100 grams) by said actylene black, Z is the specific surface area (m.sup.2 /gram) of said acetylene black, and W.gtoreq.120.
摘要翻译：公开了一种具有优异的运行性能和优异的耐久性的磁记录介质，其包括其上具有包含铁磁粉末和炭黑的磁性层的非磁性载体，所述炭黑是含有高结构炉炭黑和乙炔黑前者与后者的重量比为95:5至45:55，所述高结构炉炭黑具有满足以下通式（I）或（II）的性能：0 / = 0.625X + 75（I）X> 120，Y <0.01125X2-2.005X + 229（II）其中Y是由所述高结构碳炉吸收的DBP油的量（M1 / 100克）黑色，X是所述高结构碳炉黑色的比表面积（m2 / g），Y> = 120，其中W是由所述丙烯黑吸附的DBP油的量（ml / 100克），Z是所述乙炔黑的比表面积（m2 /克），W> / = 120。

6. 发明授权

US4734325A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4734325A
公开(公告)日：1988-03-29
申请号：US784076
申请日：1985-10-04
申请人： Katsumi Ryoke , Nobutaka Yamaguchi , Masatoshi Takahashi , Kazuko Hanai , Hideaki Kosha , Eiichi Tadokoro
发明人： Katsumi Ryoke , Nobutaka Yamaguchi , Masatoshi Takahashi , Kazuko Hanai , Hideaki Kosha , Eiichi Tadokoro
IPC分类号： C09D5/23 , C09D127/04 , C09D175/00 , C09D175/04 , G11B5/73 , G11B5/735 , G11B5/70
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/257
摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer being provided on one surface of the support and a backing layer being provided on the surface of the support opposite to said magnetic layer, the backing layer contains binder and non-magnetic particles comprised of (i) corbon black having an average particle size of 0.1 to 1.0 .mu.m and (ii) particles of abrasives having a Mohs' hardness of at least 6 and an average particle size of 1 .mu.m or less, with the non-magnetic particles in said backing layer being used in an amount of 40 to 300 parts by weight per 100 parts by weight of binder.
摘要翻译：一种磁记录介质，包括在其上设置有磁性层的非磁性载体，所述磁性层设置在所述载体的一个表面上，背衬层设置在所述载体的与所述磁性层相对的表面上，所述背衬层包含粘合剂和非磁性层，磁性粒子由（i）平均粒径为0.1〜1.0μm的cor黑，（ⅱ）莫氏硬度至少为6，平均粒径为1μm以下的磨料颗粒组成，所述背衬层中的非磁性颗粒的使用量为每100重量份粘合剂为40至300重量份。

7. 发明授权

US4731278A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4731278A
公开(公告)日：1988-03-15
申请号：US862724
申请日：1986-05-13
申请人： Katsumi Ryoke , Masatoshi Takahashi , Eiichi Tadokoro
发明人： Katsumi Ryoke , Masatoshi Takahashi , Eiichi Tadokoro
IPC分类号： C01G49/00 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/70 , G11B5/702 , G11B5/706 , G11B5/708 , G11B5/714 , G11B5/73 , G11B5/735 , H01F1/11
CPC分类号： G11B5/7085 , G11B5/7023 , G11B5/714 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/257
摘要： A magnetic recording medium is described, comprising a magnetic layer containing ferromagnetic fine particles and a binder coated on one side of a non-magnetic support and a backing layer coated on the opposite side of the non-magnetic support, wherein said ferromagnetic fine particles have a cobalt content of from 2 to 10 wt % with respect to the iron oxide content thereof, the content of divalent iron (Fe.sup.2+) of from 1 to 10 wt % with respect to the trivalent iron (Fe.sup.3+) content thereof, and the specific surface area of from 30 to 50 m.sup.2 /g, said binder comprises a copolymer of vinyl chloride-vinyl acetate-maleic acid contained in an amount of 40 wt % or more with respect to the total binder content of the magnetic layer, an abrasive agent having a Mohs hardness of 6 or more is contained in said magnetic layer, and the resulting magnetic tape has a coercive force of from 750 to 900 Oe at 25.degree. C.
摘要翻译：描述了一种磁记录介质，其包括含有铁磁细颗粒的磁性层和涂覆在非磁性载体的一侧上的粘合剂和涂覆在非磁性载体的相对侧上的背衬层，其中所述铁磁细颗粒具有相对于其氧化铁含量为2〜10重量％的钴含量，相对于三价铁（Fe3 +）含量，二价铁（Fe 2+）的含量为1〜10重量％，比表面积面积为30〜50m2 / g，所述粘合剂包含相对于磁性层的总粘合剂含量为40重量％以上的氯乙烯 - 乙酸乙烯酯 - 马来酸的共聚物，具有所述磁性层中含有6以上的莫氏硬度，所得磁带在25℃下的矫顽力为750〜900Oe。

8. 发明授权

US4686139A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4686139A
公开(公告)日：1987-08-11
申请号：US778468
申请日：1985-09-20
申请人： Katsumi Ryoke , Nobutaka Yamaguchi , Masatoshi Takahashi , Kazuko Hanai , Hideaki Kosha , Eiichi Tadokoro
发明人： Katsumi Ryoke , Nobutaka Yamaguchi , Masatoshi Takahashi , Kazuko Hanai , Hideaki Kosha , Eiichi Tadokoro
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D163/00 , G11B5/73 , G11B5/735 , G11B5/68 , G11B5/708
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/265 , Y10T428/30
摘要： A magnetic recording medium is described, comprising a non-magnetic support having a magnetic layer and a backing layer which is provided on the surface of the support opposite to the magnetic layer, the backing layer containing (a) non-magnetic particles comprising carbon black having an average particle diameter of 0.1 to 1.0 .mu.m, (b) a binder comprising (i) a resin having 150 kg/cm.sup.2 or less of 100% modulus in an amount of at least 50 wt % based on the total amount of binder, and (ii) a diphenyl methane diisocyanate type hardening agent, with the amount of non-magnetic particles to total contained in the backing layer being 40 to 300 parts by weight of non-magnetic particles per 100 parts by weight of binder.
摘要翻译：描述了一种磁记录介质，其包括具有磁性层的非磁性载体和设置在与磁性层相对的支撑体的表面上的背衬层，背衬层包含（a）包含炭黑的非磁性颗粒平均粒径为0.1〜1.0μm，（b）粘合剂，其包含（i）相对于粘合剂的总量为150kg / cm 2以下的100质量％以上的模量为50重量％以上的树脂，和（ii）二苯基甲烷二异氰酸酯型硬化剂，相对于每100重量份粘合剂，背衬层中总含有的非磁性颗粒的量为40〜300重量份的非磁性颗粒。

9. 发明授权

US5094908A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5094908A
公开(公告)日：1992-03-10
申请号：US558539
申请日：1990-07-27
申请人： Katsumi Ryoke , Masatoshi Takahashi , Toshihiko Miura
发明人： Katsumi Ryoke , Masatoshi Takahashi , Toshihiko Miura
IPC分类号： G11B5/706 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/708 , G11B5/71 , G11B5/712 , G11B5/714 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , G11B5/7085 , G11B5/71 , G11B5/712 , G11B5/714 , Y10S428/90 , Y10T428/25 , Y10T428/257
摘要： A magnetic recording medium is disclosed, which comprises a non-magnetic support having on one surface of the support a backing layer containing carbon black and a binder and on the opposite surface of the support a magnetic recording layer containing a ferromagnetic power and a binder, the ferromagnetic powder being oriented in the magnetic recording layer such that the ratio of the number of diffraction points N(220)/N(113) measured at the surface region of the magnetic layer by high energy electron diffraction is at most 1.65; and the squareness ratio Br/Bm of the magnetic layer is from 0.830 to 0.860 at 25.degree. C. The medium has excellent running durability, S/N ratio, and dropout properties.
摘要翻译：公开了一种磁记录介质，其包括非磁性支撑体，其在支撑体的一个表面上具有包含炭黑和粘合剂的背衬层，并且在支撑体的相对表面上包含含有铁磁性力和粘合剂的磁记录层，铁磁性粉末在磁记录层中取向，使得通过高能电子衍射在磁性层的表面区域测得的衍射点数N（220）/ N（113）的比例为1.65以下; 磁性层的矩形比Br / Bm在25℃为0.830〜0.860。介质具有优异的运行耐久性，S / N比和脱落性能。

10. 发明授权

US4868060A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4868060A
公开(公告)日：1989-09-19
申请号：US38172
申请日：1987-04-14
申请人： Katsumi Ryoke , Toshimitu Okutu , Masatoshi Takahashi , Yasuyuki Yamada
发明人： Katsumi Ryoke , Toshimitu Okutu , Masatoshi Takahashi , Yasuyuki Yamada
IPC分类号： C08G18/79 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702
CPC分类号： G11B5/7021 , C08G18/791 , Y10S428/90 , Y10T428/31547
摘要： A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer containing ferromagnetic particles and a binder, said binder of the magnetic layer containing polyisocyanato-isocyanurate as a hardening component.
摘要翻译：描述了一种磁记录介质，包括其上设置有含有铁磁颗粒和粘合剂的磁性层的非磁性载体，所述磁性层的粘合剂含有聚异氰酸酯基异氰脲酸酯作为硬化组分。

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