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1. 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。

2. 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。

3. 发明授权

US4728569A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4728569A
公开(公告)日：1988-03-01
申请号：US799759
申请日：1985-11-19
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： G11B5/73 , G11B5/735 , G11B5/708
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25
摘要： A magnetic recording medium is described, 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 is provided after the magnetic layer has been subjected to calendering treatment and the backing layer comprises (i) non-magnetic particles including carbon black particles having an average particle diameter of from 0.1 to 1 .mu.m and (ii) a binder composition comprising from 50 to 95 wt % of a resin having a 100% modulus at 150 kg/cm.sup.2 or less based on the total weight of the binder composition, and the weight ratio of non-magnetic particles to binder composition contained in the backing layer is from 300/100 to 40/100.
摘要翻译：描述了一种磁记录介质，其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，其中背衬层在磁性层已经经受之后提供对于压延处理，背衬层包括（i）包括平均粒径为0.1至1μm的碳黑颗粒的非磁性颗粒和（ii）包含50至95重量％的具有基于粘合剂组合物的总重量为150kg / cm 2或更小的100％模量，背衬层中所含的非磁性颗粒与粘合剂组合物的重量比为300/100至40/100。

4. 发明授权

US4649072A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4649072A
公开(公告)日：1987-03-10
申请号：US779348
申请日：1985-09-23
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： G11B5/735 , G11B5/68 , G11B5/78
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/24942 , Y10T428/25 , Y10T428/30 , Y10T428/31551
摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer on one side and a backing layer on the other side, wherein the backing layer contains (1) non-magnetic powders containing carbon black having an average particle diameter of from 0.1 to 1 .mu.m; (2) two or more binders wherein (a) at least one of the binders is a resin having a 100% modulus of from 15 to 150 kg/cm.sup.2 in an amount of from 50 to 95 wt % based on the total amount of the binders in the backing layer, and (b) the rest binder(s) is/are a resin other than the resin having a 100% modulus of from 15 to 150 kg/cm.sup.2, and the weight ratio of all the non-magnetic powders to all the binders in the backing layer is from 300:100 to 40:100; and (3) a polyisocyanate in an amount of from 15 to 40 wt % based on the total amount of the binders in the backing layer.
摘要翻译：一种磁记录介质，包括在一侧上设置有磁性层的磁性载体和另一侧上的背衬层，其中所述背衬层包含（1）含有平均粒径为 0.1〜1μm; （2）两种或更多种粘合剂，其中（a）至少一种粘合剂是基于总量的50至95重量％的100至100重量％的模量为15至150kg / cm 2的树脂背衬层中的粘合剂，和（b）剩余的粘合剂是具有100％模量为15至150kg / cm 2的树脂之外的树脂，并且所有非磁性粉末的重量比对于背衬层中的所有粘合剂为300:100至40:100; 和（3）基于背衬层中的粘合剂的总量的15至40重量％的量的多异氰酸酯。

5. 发明授权

US4696858A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4696858A
公开(公告)日：1987-09-29
申请号：US789221
申请日：1985-10-18
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 , C09D175/00 , C09D175/04 , G11B5/73 , G11B5/735 , G11B5/70
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25
摘要： A magnetic recording medium is described, 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 containing (A) a binder comprised of resin having a 100% modulus of 150 kg/cm.sup.2 or less present in an amount of 50 to 95 wt % based on the total weight amount of binder and (B) non-magnetic particles comprised of (i) carbon black having an average particle size of more than 0.1 .mu.m to 1.0 .mu.m, and (ii) carbon black having an average particle size of 0.01 .mu.m to 0.1 .mu.m in a weight ratio of carbon black (i)/carbon black (ii) of 95/5 to 5/95, with the non-magnetic particles in the backing layer being present in an amount of 40 to 300 parts by weight per 100 parts by weight of the total binder.
摘要翻译：描述了一种磁记录介质，包括其上设置有磁性层的非磁性载体，其设置在支撑体的一个表面上，背衬层设置在与所述磁性层相对的支撑体的表面上，背衬层包含 A）由基于粘合剂总重量的50至95重量％的量的100％模量为150kg / cm 2或更低的树脂组成的粘合剂和（B）由（i）组成的非磁性颗粒，平均粒径大于0.1μm〜1.0μm的炭黑，（ii）碳黑（i）/炭黑（i）的重量比的平均粒径为0.01μm〜0.1μm的炭黑（ii）为95/5至5/95，背衬层中的非磁性颗粒以每100重量份总粘合剂为40至300重量份的量存在。

6. 发明授权

US4803121A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4803121A
公开(公告)日：1989-02-07
申请号：US109013
申请日：1987-10-16
申请人： Katsumi Ryoke , Masatoshi Takahashi , Toshimitu Okutu , Hideaki Kosha
发明人： Katsumi Ryoke , Masatoshi Takahashi , Toshimitu Okutu , Hideaki Kosha
IPC分类号： C09D5/23 , G11B5/708 , G11B5/70
CPC分类号： G11B5/7085 , Y10S428/90 , Y10T428/257
摘要： A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon a magnetic layer comprising ferromagnetic fine particles, a binder, and .alpha.-alumina particles having an average size of from about 0.1 to 0.3 .mu.m, provided that the number of .alpha.-alumina particles having a particle size of larger than 0.05 .mu.m is at least equal to the number of .alpha.-alumina particles having a particle size of up to 0.05 .mu.m.
摘要翻译：公开了一种磁记录介质，其包括非磁性载体，其上具有包含铁磁细颗粒的磁性层，粘合剂和平均尺寸为约0.1至0.3μm的α-氧化铝颗粒，条件是α 粒径大于0.05μm的氧化铝粒子至少等于粒径达0.05μm的α-氧化铝粒子的数量。

7. 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。

8. 发明授权

US4546038A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4546038A
公开(公告)日：1985-10-08
申请号：US489908
申请日：1983-04-29
申请人： Nobutaka Yamaguchi , Masaaki Fujiyama , Katsumi Ryoke , Eiichi Tadokoro
发明人： Nobutaka Yamaguchi , Masaaki Fujiyama , Katsumi Ryoke , Eiichi Tadokoro
IPC分类号： C09C1/48 , C09D5/23 , C09D7/12 , C10M103/02 , C10M171/00 , C10N20/06 , C10N40/18 , G11B5/708 , B32B5/16
CPC分类号： G11B5/708 , Y10S428/90 , Y10T428/25 , Y10T428/257
摘要： A magnetic recording medium is disclosed which is comprised of a non-magnetic support having a magnetic layer provided thereon. The magnetic layer is comprised of two different types of carbon black having different particle sizes, a lubricant which is liquid at room temperature, a ferromagnetic powder all dispersed in a binder. A carbon black (1) has an average particle size smaller than 50 m.mu. and a carbon black (2) has an average particle size of larger than 120 m.mu.. The carbon black is present in a weight ratio of (1)/(2) within the range of 50/50 to 97/3. The magnetic recording medium has improved electromagnetic properties and running durability. In addition, the material provides an improved S/N ratio and an improved coefficient of friction.
摘要翻译：公开了一种磁记录介质，其包括其上设置有磁性层的非磁性支撑件。磁性层由具有不同粒度的两种不同类型的炭黑组成，在室温下为液体的润滑剂，全部分散在粘合剂中的铁磁性粉末。炭黑（1）的平均粒径小于50μm，炭黑（2）的平均粒径大于120μm。炭黑以（1）/（2）的重量比在50/50至97/3的范围内存在。磁记录介质具有改进的电磁特性和运行耐久性。此外，该材料提供改进的S / N比和改进的摩擦系数。

9. 发明授权

US4497864A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4497864A
公开(公告)日：1985-02-05
申请号：US511359
申请日：1983-07-06
申请人： Katsumi Ryoke , Nobutaka Yamaguchi , Takashi Yoneyama , Eiichi Tadokoro
发明人： Katsumi Ryoke , Nobutaka Yamaguchi , Takashi Yoneyama , Eiichi Tadokoro
IPC分类号： C09D5/23 , C09D7/12 , C10M105/38 , C10N40/18 , G11B5/71 , G11B5/70 , G11B5/72
CPC分类号： G11B5/71 , Y10S428/90 , Y10T428/25 , Y10T428/266 , Y10T428/27
摘要： A magnetic recording medium is disclosed. The medium is comprised of a support base having coated thereon a magnetic layer comprised of ferromagnetic particles dispersed in a binder and further comprised of at least one anhydrosorbitol di- and/or tetra-fatty acid non-hydroxy ester. By including the particularly disclosed fatty acid non-hydroxy ester the running properties of the magnetic recording medium are greatly improved.
摘要翻译：公开了一种磁记录介质。该介质包括其上涂覆有由分散在粘合剂中的铁磁性颗粒组成的磁性层并且还包含至少一种脱水山梨糖醇二 - 和/或四脂肪酸非羟基酯的支撑基底。通过包括特别公开的脂肪酸非羟基酯，磁记录介质的运行特性大大提高。

10. 发明授权

US4499121A Method of preparing a magnetic recording medium with a calendering treatment 失效
标题翻译：制备具有压延处理的磁记录介质的方法
公开(公告)号：US4499121A
公开(公告)日：1985-02-12
申请号：US491485
申请日：1983-05-04
申请人： Nobutaka Yamaguchi , Masaaki Fujiyama , Sugihiko Tada , Eiichi Tadokoro , Katsumi Ryoke , Masahiro Utsumi , Masami Suzuki
发明人： Nobutaka Yamaguchi , Masaaki Fujiyama , Sugihiko Tada , Eiichi Tadokoro , Katsumi Ryoke , Masahiro Utsumi , Masami Suzuki
IPC分类号： G11B5/84
CPC分类号： G11B5/84
摘要： A method for producing a magnetic recording medium is disclosed. The method involves providing a ferromagnetic coating layer on a non-magnetic support base to produce a coated base. The coated base is then subjected to an atmosphere having a RH of 60% or more, prior to or during a subsequent calendering treatment. The recording medium produced has excellent surface smoothness and improved electromagnetic properties. The method is advantageous in that a substantially long period of time may pass between the coating of the ferromagnetic layer on the support and the calendering treatment without having undesirable effects on the magnetic recording medium produced.
摘要翻译：公开了一种制造磁记录介质的方法。该方法包括在非磁性支撑基底上提供铁磁涂层以产生涂覆的基底。然后在随后的压光处理之前或期间，将涂覆的基底经受RH为60％或更高的气氛。所生产的记录介质具有优异的表面光滑度和改善的电磁特性。该方法的优点在于，在载体上的铁磁层的涂层和压延处理之间可能经历相当长的一段时间，而不会对所产生的磁记录介质产生不期望的影响。

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