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1. 发明申请

US20050260456A1 Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：US20050260456A1
公开(公告)日：2005-11-24
申请号：US11132405
申请日：2005-05-19
申请人： Kazuko Hanai , Ayako Matsumoto
发明人： Kazuko Hanai , Ayako Matsumoto
IPC分类号： C08J7/04 , G11B5/70 , G11B5/716 , G11B5/73 , G11B5/738
CPC分类号： G11B5/7305 , G11B5/733
摘要： A magnetic recording medium comprising: a nonmagnetic support; and a magnetic layer containing ferromagnetic powder and a binder, wherein the nonmagnetic support contains polyester, the nonmagnetic support has gauche/trans peak intensity ratio of 0.50 or less as determined by a ATR-FT-IR method, and a shrinkage percentage of the magnetic recording medium after storage for 1 week under a conditions of 70° C. and 5% RH is 0.040% or less.
摘要翻译：一种磁记录介质，包括：非磁性载体; 以及含有铁磁性粉末和粘合剂的磁性层，其中，所述非磁性载体含有聚酯，所述非磁性载体具有通过ATR-FT-IR法测定的0.50或更小的gauche /反式峰强度比，并且磁性收缩率在70℃，5％RH的条件下保存1周后的记录介质为0.040％以下。

2. 发明申请

US20050260459A1 Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：US20050260459A1
公开(公告)日：2005-11-24
申请号：US11132406
申请日：2005-05-19
申请人： Kazuko Hanai , Ayako Matsumoto
发明人： Kazuko Hanai , Ayako Matsumoto
IPC分类号： C08J7/04 , G11B5/716 , G11B5/73 , G11B5/738 , G11B5/82
CPC分类号： G11B5/7305 , G11B5/733
摘要： A magnetic recording medium comprising: a nonmagnetic support having a first surface and a second surface; and a magnetic layer containing ferromagnetic powder and a binder, so that the magnetic layer, the first surface and the second surface are in this order, wherein the nonmagnetic support contains polyester, a difference between largest ratio and smallest ratio among peak intensity ratios of gauche/trans on the first and second surfaces of the support in a machine direction and a transverse direction obtained by ATR-FT-IR method is 0.030 or less in an absolute value, and a shrinkage factor of the magnetic recording medium after preservation at 70° C. 5% RH for one week is 0.040% or less.
摘要翻译：一种磁记录介质，包括：具有第一表面和第二表面的非磁性载体; 以及包含铁磁性粉末和粘合剂的磁性层，使得磁性层，第一表面和第二表面依次为顺序，其中非磁性载体含有聚酯，最大比值与最高比值之间的差值 /反转在ATR-FT-IR法得到的沿机器方向和横向的载体的第一和第二表面上的绝对值为0.030以下，在70度保存后的磁记录介质的收缩率一周的5％RH为0.040％以下。

3. 发明授权

US5631062A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5631062A
公开(公告)日：1997-05-20
申请号：US248246
申请日：1994-05-24
申请人： Kenichi Masuyama , Hiroaki Takano , Kazuo Kato , Kazuko Hanai , Noburo Hibino
发明人： Kenichi Masuyama , Hiroaki Takano , Kazuo Kato , Kazuko Hanai , Noburo Hibino
IPC分类号： C09D5/23 , C09D7/12 , G11B5/70 , G11B5/73 , G11B5/738 , G11B5/66
CPC分类号： G11B5/738 , G11B5/70 , Y10S428/90 , Y10T428/24355 , Y10T428/24372
摘要： A magnetic recording medium comprising a nonmagnetic support and a magnetic layer, wherein the magnetic layer is provided on one surface of the nonmagnetic support, comprises a ferromagnetic particle, and has a surface roughness of from 2 to 10 nm; the nonmagnetic support has plural layers; at least one layer of the plural layers comprises an antistatic agent; and the nonmagnetic support has a surface roughness of from 5 to 30 nm on the opposite surface to the surface on which the magnetic layer is provided.
摘要翻译：包括非磁性载体和磁性层的磁记录介质，其中所述磁性层设置在所述非磁性载体的一个表面上，包括铁磁颗粒，并且具有2至10nm的表面粗糙度; 非磁性载体具有多层; 至少一层多层包括抗静电剂; 并且非磁性载体在与设置有磁性层的表面相反的表面上具有5至30nm的表面粗糙度。

4. 发明授权

US4711819A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4711819A
公开(公告)日：1987-12-08
申请号：US786179
申请日：1985-10-10
申请人： Kazuko Hanai , Yasuyuki Yamada
发明人： Kazuko Hanai , Yasuyuki Yamada
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/708
CPC分类号： G11B5/7021 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： In a magnetic recording medium such as video tape, audio tape and computer tape, comprising a non-magnetic support and a magnetic recording layer coated thereon in which a ferromagnetic powder is dispersed, the feature consists in that the binder contains a polyisocyanate and at least one isocyanate reaction accelerating compound selected from the group consisting of (1) tertiary amine compounds, (2) tin compounds, (3) organometallic compounds except tin compounds, (4) amphoteric ion compounds and (5) organic acids. The stability and abrasion resistance are largely improved.
摘要翻译：在诸如录像带，音频带和计算机磁带的磁记录介质中，包括非磁性载体和涂覆有铁磁粉末的磁记录层，其特征在于粘合剂含有多异氰酸酯，至少一种选自（1）叔胺化合物，（2）锡化合物，（3）除锡化合物之外的有机金属化合物，（4）两性离子化合物和（5）有机酸）的异氰酸酯反应促进化合物。稳定性和耐磨性大大提高。

5. 发明申请

US20070231606A1 Magnetic recording medium and process for producing the same 审中-公开
标题翻译：磁记录介质及其制造方法
公开(公告)号：US20070231606A1
公开(公告)日：2007-10-04
申请号：US11730393
申请日：2007-04-02
申请人： Kazuko Hanai
发明人： Kazuko Hanai
IPC分类号： G11B5/708 , G11B5/84
CPC分类号： G11B5/70621 , G11B5/714 , G11B5/84
摘要： A magnetic recording medium comprising a substrate and a magnetic layer containing ferromagnetic metal powder and a binder, wherein the ferromagnetic metal powder contains iron, cobalt and form 2 to 20 atom % of yttrium based on a total of iron and cobalt contained in the ferromagnetic metal powder and has an average length of 50 nm or smaller, and the magnetic recording medium has a test value of at least 100 passes in a magnetoresistive head resistance reduction test performed as defined herein.
摘要翻译：一种磁记录介质，包括基材和含有铁磁金属粉末和粘合剂的磁性层，其中铁磁性金属粉末含有铁，钴，并且形成2至20原子％的钇，基于铁磁性金属中所含的铁和钴总量并且平均长度为50nm以下，并且磁记录介质在如本文所定义的磁阻头抗性降低试验中具有至少100遍的测试值。

6. 发明申请

US20050185571A1 Optical information recording medium 审中-公开
标题翻译：光信息记录介质
公开(公告)号：US20050185571A1
公开(公告)日：2005-08-25
申请号：US11063549
申请日：2005-02-24
申请人： Kazuko Hanai , Hiroaki Takano , Takeshi Kakuta
发明人： Kazuko Hanai , Hiroaki Takano , Takeshi Kakuta
IPC分类号： G11B7/24 , G11B7/007 , G11B7/254
CPC分类号： G11B7/246 , G11B7/24079 , G11B7/2472 , G11B7/2475 , G11B7/248 , G11B7/2534 , G11B7/2542 , G11B7/256 , G11B7/259 , G11B2007/25706 , G11B2007/2571 , G11B2007/25715 , G11B2007/25716
摘要： The present invention provides an optical information recording medium which is not adversely affected by temperature and moisture during use and retains stable recording and reproducing properties over the long term. The optical information recording medium comprises a substrate, a recording layer formed on the substrate and a transparent sheet formed on the recording layer through an adhesive layer, wherein a surface of the transparent sheet is provided with a high-molecular compound layer having a saturated water absorption rate of 0.01% or less.
摘要翻译：本发明提供了一种光学信息记录介质，其在使用期间不受温度和湿度的不利影响，并且长期保持稳定的记录和再现性能。光学信息记录介质包括基板，形成在基板上的记录层和通过粘合剂层形成在记录层上的透明片，其中透明片的表面设置有具有饱和水的高分子化合物层吸收率在0.01％以下。

7. 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。

8. 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。

9. 发明授权

US5356726A Magnetic recording medium comprising a magnetic layer having ferromagnetic powder, a specified binder and a lubricant composition which includes a specified tertiary branched chain fatty acid ester 失效
标题翻译：磁记录介质包括具有铁磁性粉末的磁性层，特定的粘合剂和包含特定的叔支链脂肪酸酯的润滑剂组合物
公开(公告)号：US5356726A
公开(公告)日：1994-10-18
申请号：US048587
申请日：1993-04-19
申请人： Yasuo Nishikawa , Kazuko Hanai , Akira Ushimaru , Yuzo Higaki , Tatsuya Yamada
发明人： Yasuo Nishikawa , Kazuko Hanai , Akira Ushimaru , Yuzo Higaki , Tatsuya Yamada
IPC分类号： G11B5/71 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , C10M105/34 , C10N40/18 , G11B5/64 , G11B5/00
CPC分类号： G11B5/71 , Y10S428/90
摘要： A magnetic recording medium high in storage stability and excellent in running properties and durability over a wide range of temperature and humidity, which comprises a non-magnetic support having a magnetic layer formed thereon, in which the magnetic recording layer contains a tertiary branched chain fatty acid ester represented by the following general formula ( I ): ##STR1## wherein each of R.sup.1, R.sup.2 and R.sup.3 independently represents a hydrocarbon group having 1 to 18 carbon atoms, and R.sup.4 represents a hydrogen group having 1 to 24 carbon atoms, provided the total number of carbon atoms in the ester is 12 to 40.
摘要翻译：一种磁记录介质，其存储稳定性高，在宽温度和湿度范围内的运行性能和耐久性优异，包括其上形成有磁性层的非磁性载体，其中磁记录层含有叔支链脂肪由下列通式（I）表示的酸酯：其中R1，R2和R3各自独立地表示碳原子数1〜18的烃基，R4表示碳原子数为1〜24的氢原子。条件是酯的总碳原子数为12〜40。

10. 发明授权

US5244736A Magnetic recording medium having multiple magnetic layers with specified compositions 失效
标题翻译：具有多个具有特定组成的磁性层的磁记录介质
公开(公告)号：US5244736A
公开(公告)日：1993-09-14
申请号：US675001
申请日：1991-03-26
申请人： Hiroshi Hashimoto , Hideomi Watanabe , Akira Ushimaru , Kazuko Hanai , Akihiro Matsufuji
发明人： Hiroshi Hashimoto , Hideomi Watanabe , Akira Ushimaru , Kazuko Hanai , Akihiro Matsufuji
IPC分类号： G11B5/70 , G11B5/702 , G11B5/712 , G11B5/716
CPC分类号： G11B5/712 , G11B5/7013 , G11B5/7023 , G11B5/716 , Y10S428/90 , Y10T428/2991 , Y10T428/31511 , Y10T428/31609 , Y10T428/31786 , Y10T428/31935 , Y10T428/31938 , Y10T428/31942 , Y10T428/31971
摘要： A magnetic recording medium comprising a non-magnetic support having thereon a multi-layer magnetic layer structure comprising ferromagnetic fine powder and a binder, wherein said multi-layer magnetic layer structure is formed by coating a first composition containing the ferromagnetic fine powder and a polyisocyanate compound on the non-magnetic support to form a first magnetic layer and coating a second composition containing ferromagnetic fine powder and an epoxy compound having at least one epoxy group or a coupling agent on said first magnetic layer to form a second magnetic layer, wherein coating of said second magnetic layer is conducted simultaneously with or after coating said first magnetic layer while said first magnetic layer is still in a wet state, by a simultaneous or successive multiple layered coating method.
摘要翻译：一种磁记录介质，包括其上具有包含铁磁性细粉末和粘结剂的多层磁性层结构的非磁性载体，其中所述多层磁性层结构通过涂覆含有铁磁性细粉末和多异氰酸酯的第一组合物在非磁性载体上形成第一磁性层并在所述第一磁性层上涂覆含有铁磁细粉末和至少一种环氧基或偶联剂的环氧化合物的第二组合物以形成第二磁性层，其中涂层的所述第二磁性层在通过同时或连续的多层涂覆方法在所述第一磁性层仍处于湿润状态的同时涂覆所述第一磁性层之后或之后进行。

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