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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。
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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。
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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
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。
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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
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。
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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。
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6.发明授权
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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公开(公告)号：US4497864A
公开(公告)日：1985-02-05
申请号：US511359
申请日：1983-07-06
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。
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公开(公告)号：US4546038A
公开(公告)日：1985-10-08
申请号：US489908
申请日：1983-04-29
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。
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公开(公告)号：US4647501A
公开(公告)日：1987-03-03
申请号：US815271
申请日：1985-12-24
申请人： Nobutaka Yamaguchi , Shinobu Iida , Norio Nasu , Katsumi Ryoke , Toshimitu Okutu , Kenichi Masuyama
发明人： Nobutaka Yamaguchi , Shinobu Iida , Norio Nasu , Katsumi Ryoke , Toshimitu Okutu , Kenichi Masuyama
IPC分类号： C09D175/04 , C09D101/18 , C09D127/08 , G11B5/73 , G11B5/735 , G11B5/70 , G11B5/72
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/31565 , Y10T428/3158 , Y10T428/31609
摘要： A magnetic recording material, which comprises a non-magnetic support having provided on one side thereof a magnetic layer and on the other side thereof a backing layer is disclosed. The binder of the backing layer is comprised of a combination of a cellulose resin, a vinylidene chloride resin, a polyurethane resin and a polyisocyanate. Use of the backing layer increases the durability of the tape and aids in preventing drop out.
摘要翻译： 公开了一种磁记录材料，其包括在其一侧上设置有磁性层的非磁性支撑体，其另一侧具有背衬层。 背衬层的粘合剂由纤维素树脂，偏二氯乙烯树脂，聚氨酯树脂和多异氰酸酯的组合构成。 背衬层的使用增加了胶带的耐久性，有助于防止脱落。
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公开(公告)号：US4822672A
公开(公告)日：1989-04-18
申请号：US20842
申请日：1987-02-27
CPC分类号： B24D3/002 , B24D3/28 , B24D3/344 , Y10S428/90 , Y10T428/25 , Y10T428/257
摘要： An abrasive tape comprises a flexible non-magnetic substrate, and an abrasive coating film applied onto the flexible non-magnetic substrate and formed by kneading abrasive grains, a binder and an additive. The binder contains a resin which has, at a side chain, at least one polar group selected from the group consisting of ##STR1## where M represents a hydrogen atom, lithium, sodium, or potassium, M.sub.1 represents a hydrogen atom, lithium, sodium, potassium, or an alkyl group, and M.sub.2 represents a hydrogen atom, lithium, sodium, potassium, or an alkyl group.
摘要翻译： 研磨带包括柔性非磁性基底，以及施加到柔性非磁性基底上并通过捏合磨粒，粘合剂和添加剂形成的研磨涂层膜。 粘合剂含有在侧链具有至少一个选自下组的极性基团的树脂，其中M表示氢原子，锂，钠或钾，M1表示氢原子，锂，钠 ，钾或烷基，M2表示氢原子，锂，钠，钾或烷基。
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