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1. 发明申请

US20070230054A1 Magnetic tape 审中-公开
标题翻译：磁带
公开(公告)号：US20070230054A1
公开(公告)日：2007-10-04
申请号：US11727942
申请日：2007-03-29
申请人： Toshiharu Takeda , Katsuhiko Meguro , Takeshi Nagata
发明人： Toshiharu Takeda , Katsuhiko Meguro , Takeshi Nagata
IPC分类号： G11B5/78
CPC分类号： G11B5/70 , G11B5/73 , G11B5/7305 , G11B5/78
摘要： A magnetic tape including: a nonmagnetic support; a substantially nonmagnetic layer containing nonmagnetic powder and a binder; and a magnetic layer containing ferromagnetic powder and a binder, in this order, wherein the magnetic tape has a coefficient of temperature expansion of from 0 to 10×10−6/° C. and a coefficient of humidity expansion of 0 to 7×10−6/% RH each in a transverse direction of the magnetic tape, and the magnetic tape has a dimensional deformation amount of from 0.01 to 0.06% in the transverse direction in case of applying a tensile stress of 1N to the magnetic tape at 60° C. for 50 hours in a longitudinal direction of the magnetic tape.
摘要翻译：一种磁带，包括：非磁性载体; 包含非磁性粉末和粘合剂的基本上非磁性层; 以及包含铁磁粉末和粘合剂的磁性层，其中磁带的温度膨胀系数为0至10×10 -6 /℃，并且湿度膨胀系数 0〜7×10 -6 /％RH，并且在施加张力的情况下，磁带在横向上的尺寸变形量为0.01〜0.06％在磁带的长度方向上，在60℃下对磁带施加1N的应力50小时。

2. 发明申请

US20070231616A1 Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：US20070231616A1
公开(公告)日：2007-10-04
申请号：US11727941
申请日：2007-03-29
申请人： Toshiharu Takeda , Katsuhiko Meguro
发明人： Toshiharu Takeda , Katsuhiko Meguro
IPC分类号： G11B5/706
CPC分类号： G11B5/7305
摘要： A magnetic recording medium including a nonmagnetic substrate and a magnetic layer, wherein the nonmagnetic substrate is made from a polyethylene naphthalate and has a thickness of 6.5 μm or smaller, and the magnetic recording medium has a creep deformation of 0.30% or less in a longitudinal direction of the magnetic recording medium under a tensile stress of 15.7 MPa applied in the longitudinal direction at 60° C. for 50 hours.
摘要翻译：一种包括非磁性基底和磁性层的磁记录介质，其中非磁性基底由聚萘二甲酸乙二醇酯制成，厚度为6.5μm或更小，并且磁记录介质在纵向上具有0.30％或更小的蠕变变形方向的拉伸应力为15.7MPa的磁记录介质在60℃下沿长度方向施加50小时。

3. 发明申请

US20070009768A1 Magnetic recording medium and method for manufacturing 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：US20070009768A1
公开(公告)日：2007-01-11
申请号：US11475068
申请日：2006-06-27
申请人： Toshiharu Takeda , Katsuhiko Meguro
发明人： Toshiharu Takeda , Katsuhiko Meguro
IPC分类号： G11B5/706 , G11B5/708 , B05D5/12
CPC分类号： G11B5/7305 , G11B5/70 , G11B5/8404
摘要： The present invention provides a magnetic recording medium comprising: a non-magnetic substrate; and one or more magnetic layers formed on the non-magnetic substrate, wherein the magnetic recording medium has a loss modulus at 0.5 Hz at a temperature of 130° C. of 0.18 to 0.39 GPa, in order to improve dimensional stability and running stability of a tape, particularly in a high-temperature environment, and thereby improve reliability in recording and reproduction of data, and to provide a method for manufacturing the same. Also, the magnetic recording medium of the present invention attains the object to solve the problem that tension for driving generates nonuniform elongation in the medium, resulting in reduction of running stability because of a thin magnetic recording medium which is reduced the total thickness to increase the capacity of the backup tape per reel by increasing a tape length and increase.
摘要翻译：本发明提供一种磁记录介质，包括：非磁性基板; 以及形成在非磁性基板上的一个或多个磁性层，其中磁记录介质在130℃的温度为0.5Hz的损耗模量为0.18至0.39GPa，以提高尺寸稳定性和运行稳定性一种胶带，特别是在高温环境下，从而提高数据的记录和再现的可靠性，并提供一种其制造方法。此外，本发明的磁记录介质的目的是为了解决用于驱动的张力在介质中产生不均匀的伸长的问题，导致由于薄的磁记录介质而导致的运行稳定性的降低，从而减小总厚度以增加通过增加磁带长度和增加，每个磁带备份磁带的容量。

4. 发明申请

US20060289335A1 Manufacturing method of tape-form recording medium 审中-公开
标题翻译：带状记录介质的制造方法
公开(公告)号：US20060289335A1
公开(公告)日：2006-12-28
申请号：US11453978
申请日：2006-06-16
申请人： Yutaka Kakuishi , Katsumi Ryoke , Katsuhiko Meguro
发明人： Yutaka Kakuishi , Katsumi Ryoke , Katsuhiko Meguro
IPC分类号： B65D79/00
CPC分类号： G11B5/84
摘要： A manufacturing method of a tape-form recoding medium in the present invention includes a raw web manufacturing process of forming a data recoding layer on one side of a substrate and a back coat layer having a minute convexity on the other side thereof, and thus manufacturing raw web of the tape-form recoding medium; a raw web winding process of winding the raw web with a predetermined tension; a raw web rewinding process of rewinding the raw web; and a raw web heating process of heating the rewound raw web.
摘要翻译：本发明的带状记录介质的制造方法包括在基板的一面上形成数据记录层的原纸幅制造工序和在其另一面上具有微小凸起的背涂层，由此制造带状记录介质的原始网页; 以预定张力卷绕原料纤维网的原料卷绕过程; 将卷筒纸重绕的原料卷筒纸卷绕过程; 以及加热回卷的原料网的原料网加热过程。

5. 发明授权

US07128989B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US07128989B2
公开(公告)日：2006-10-31
申请号：US10219669
申请日：2002-08-16
申请人： Hiroshi Hashimoto , Katsuhiko Meguro , Yuichiro Murayama , Masahiko Mori
发明人： Hiroshi Hashimoto , Katsuhiko Meguro , Yuichiro Murayama , Masahiko Mori
IPC分类号： G11B5/66 , G11B5/70
CPC分类号： G11B5/714 , G11B5/7021 , G11B5/7023 , G11B5/70678
摘要： Provided is a magnetic recording medium having excellent dispersibility, smoothness and electromagnetic characteristics. The magnetic recording medium comprises at least one magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support. Said ferromagnetic powder is a ferromagnetic metal powder having an average major axis length of 10 to 80 nm and a crystallite size of 8 to 18 nm, or a ferromagnetic hexagonal ferrite powder having an average plate diameter of 5 to 40 nm, and said binder comprises 0.2 to 0.7 meq/g of at least one polar group selected from —SO3M, —OSO3M, —PO(OM)2, —OPO(OM)2 and —COOM (where M denotes a hydrogen atom, alkali metal or ammonium salt), and/or 0.5 to 5 meq/g of at least one polar group selected from —CONR1R2, —NR1R2 and —NR1R2R3+ (where R1, R2 and R3 independently denote hydrogen atoms or alkyl groups).
摘要翻译：提供了具有优异的分散性，平滑性和电磁特性的磁记录介质。磁记录介质包括至少一个包含非磁性载体上的铁磁性粉末和粘合剂的磁性层。所述铁磁粉末是平均长轴长度为10〜80nm，微晶尺寸为8〜18nm的铁磁性金属粉末，平均板直径为5〜40nm的铁磁性六角铁氧体粉末，所述粘合剂包含 0.2〜0.7meq / g的选自-SO 3 M，-OSO 3 M，-PO（OM）2

6. 发明申请

US20060093869A1 Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：US20060093869A1
公开(公告)日：2006-05-04
申请号：US11266186
申请日：2005-11-04
申请人： Katsuhiko Meguro , Masatoshi Takahashi
发明人： Katsuhiko Meguro , Masatoshi Takahashi
IPC分类号： G11B5/716
CPC分类号： G11B5/73 , G11B5/7026 , G11B5/70678 , G11B5/7305
摘要： A magnetic recording medium is provided that comprises a non-magnetic support and, in order above at least one surface thereof, a reinforcing layer comprising at least one material selected from the group consisting of metals, metalloids, and alloys, and oxides and composites thereof, a smoothing layer, and a magnetic layer comprising a ferromagnetic powder dispersed in a binder.
摘要翻译：提供一种磁记录介质，其包括非磁性载体，并且在其至少一个表面上依次包括选自金属，准金属和合金中的至少一种材料的增强层及其氧化物及其复合材料平滑层，以及包含分散在粘合剂中的铁磁性粉末的磁性层。

7. 发明申请

US20050202288A1 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US20050202288A1
公开(公告)日：2005-09-15
申请号：US11037060
申请日：2005-01-19
申请人： Katsuhiko Meguro , Masatoshi Takahashi
发明人： Katsuhiko Meguro , Masatoshi Takahashi
IPC分类号： G11B5/68
CPC分类号： G11B5/714 , G11B5/7305 , G11B5/733 , Y10T428/31794
摘要： A magnetic recording medium including a polymer support having thereon at least one magnetic layer containing a ferromagnetic metal powder having an average major axis length of from 20 to 100 nm or a ferromagnetic hexagonal ferrite powder having an average tabular diameter of from 5 to 40 nm and a binder, the polymer support having an intrinsic viscosity of from 0.47 to 0.51 dL/g, a Young's modulus in the machine direction of from 7.0 to 8.6 GPa, a Young's modulus in the transverse direction of from 5.4 to 8.0 GPa, and a breaking strength in the transverse direction of from 370 to 450 MPa.
摘要翻译：一种磁记录介质，包括其上具有至少一个磁性层的聚合物载体，所述磁性层含有平均长轴长度为20至100nm的铁磁性金属粉末或平均片状直径为5至40nm的铁磁性六方铁氧体粉末，以及粘合剂，特性粘度为0.47〜0.51dL / g的聚合物载体，纵向的杨氏模量为7.0〜8.6GPa，横向的杨氏模量为5.4〜8.0GPa，断裂横向强度为370〜450MPa。

8. 发明授权

US06623849B2 Magnetic recording medium 失效
公开(公告)号：US06623849B2
公开(公告)日：2003-09-23
申请号：US09866091
申请日：2001-05-25
申请人： Katsuhiko Meguro , Hiroshi Hashimoto
发明人： Katsuhiko Meguro , Hiroshi Hashimoto
IPC分类号： G11B5702
CPC分类号： G11B5/70621 , G11B5/7022 , G11B5/7023 , G11B5/70678 , G11B5/733 , Y10T428/256 , Y10T428/257 , Y10T428/265 , Y10T428/31855
摘要： A magnetic recording medium comprises: a support; an underlayer containing a non-magnetic powder and a binder; and at least one magnetic layer containing a binder and one of a ferromagnetic metal powder having an average major axis of 0.01 &mgr;m to 0.10 &mgr;m and a crystallite size of 80 Å to 180 Å and a ferromagnetic hexagonal ferrite powder having an average tabular diameter of 5 nm to 40 nm, wherein the magnetic layer has a thickness of 0.01 &mgr;m to 0.5 &mgr;m, and the binder in the magnetic layer comprises a (meth)acrylate copolymer having hydrophilic polar groups and comprising 0 to 75% by weight of alkyl (meth)acrylate units, 5 to 80% by weight of benzene ring-containing (meth)acrylate units and 1 to 75% by weight of nitrogen-containing radical polymerizable monomer units.

9. 发明授权

US6010773A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US6010773A
公开(公告)日：2000-01-04
申请号：US978416
申请日：1997-11-25
申请人： Yuichiro Murayama , Katsuhiko Meguro , Masaki Satake , Hiroshi Hashimoto
发明人： Yuichiro Murayama , Katsuhiko Meguro , Masaki Satake , Hiroshi Hashimoto
IPC分类号： B05D7/24 , B32B27/40 , C08J7/04 , C09D5/23 , C09D175/04 , G11B5/702 , G11B5/716 , G11B5/738
CPC分类号： G11B5/7021 , G11B5/7022 , G11B5/716 , G11B5/738 , Y10S428/90 , Y10T428/24975 , Y10T428/265 , Y10T428/31609
摘要： The present invention provides a magnetic recording medium having good electromagnetic transfer characteristics and high running durability, and it comprises a lower layer and a magnetic layer, said lower layer having at least one of magnetic powder or non-magnetic inorganic powder and a binder (A) dispersed therein and being placed on a non-magnetic support member, at least one layer of said magnetic layers having ferromagnetic powder and a binder (B) dispersed therein and being deposited on said lower layer, whereby said magnetic recording medium comprises polyurethane resins (1) and (2), said polyurethane resin (1) is contained as said binder (B) and comprises a short-chain diol having a cyclic structure and weight average molecular weight of 200 to 500 in an amount of 15 to 50 weight %, a polyol having an ether group of 1 to 6 mmol/g and weight average molecular weight of 500 to 5000 in an amount of 10 to 50 weight % in polyurethane, and an organic diisocyanate, and said polyurethane resin (2) is contained as said binder (A) and comprises a short-chain diol having cyclic structure and weight average molecular weight of 200 to 500 in an amount of 0 to 15 weight %, a polyol having an ether group of 6 to 14 mmol/g and weight average molecular weight of 500 to 5000 in an amount of 50 to 90 weight %, and an organic diisocyanate.
摘要翻译：本发明提供一种具有良好的电磁传递特性和高运行耐久性的磁记录介质，它包括下层和磁性层，所述下层具有至少一种磁粉或非磁性无机粉末和粘合剂（A ）分散在其中并且被放置在非磁性支撑构件上，至少一层所述磁性层具有铁磁粉末和粘合剂（B）分散在其中并沉积在所述下层上，由此所述磁记录介质包括聚氨酯树脂（ 1）和（2）中，作为所述粘合剂（B）含有所述聚氨酯树脂（1），其含有15〜50重量％的环状结构，重均分子量为200〜500的短链二醇，聚氨酯中的醚基为1〜6mmol / g，重均分子量为500〜5000的多元醇，有机二异氰酸酯，所述聚氨酯包含作为所述粘合剂（A）的新型树脂（2），其含有0〜15重量％的环状结构和重均分子量为200〜500的短链二醇，醚基为6的多元醇至14mmol / g，重量平均分子量为500至5000，数量为50至90重量％，和有机二异氰酸酯。

10. 发明授权

US5419943A Magnetic recording medium having a magnetic layer with a Tg of 80.degree. C . .degree. C. 失效
标题翻译：具有Tg为80℃至100℃的磁性层的磁记录介质
公开(公告)号：US5419943A
公开(公告)日：1995-05-30
申请号：US144317
申请日：1993-11-01
申请人： Katsuhiko Meguro , Mikihiko Kato , Tetsuji Nishida , Minoru Kanazawa , Makoto Yoshimura
发明人： Katsuhiko Meguro , Mikihiko Kato , Tetsuji Nishida , Minoru Kanazawa , Makoto Yoshimura
IPC分类号： G11B5/70 , G11B5/702 , G11B5/73 , G11B5/78 , G11B5/00
CPC分类号： G11B5/7305 , G11B5/70 , G11B5/7021 , G11B5/78 , Y10S428/90 , Y10T428/24355 , Y10T428/249986 , Y10T428/25 , Y10T428/256 , Y10T428/265
摘要： A magnetic recording medium is disclosed, comprising a nonmagnetic support having thereon a magnetic layer, said magnetic layer comprising ferromagnetic particles and a binder, wherein nonmagnetic support has a transverse-direction Young's modulus of at least 1,000 Kg/mm.sup.2, said magnetic layer has a glass transition temperature of 80.degree. to 100.degree. C., and said magnetic recording medium has a total thickness of less than 12 .mu.m, and further a magnetic recording medium is disclosed, comprising a nonmagnetic support having thereon a magnetic layer, said magnetic layer comprising ferromagnetic particles and a binder, wherein said magnetic recording medium is adapted for use with a magnetic head having a core width of at least 100 .mu.m at a speed of at least 20 m/sec based upon relative speed of said recording medium and said head, said nonmagnetic support has a transverse-direction Young's modulus of at least 1,000 Kg/mm.sup.2, said magnetic layer has a glass transition temperature of from 80.degree. to 100.degree. C., and said magnetic recording medium has a total thickness of less than 12 .mu.m.
摘要翻译：公开了一种磁记录介质，其包括其上具有磁性层的非磁性载体，所述磁性层包含铁磁颗粒和粘合剂，其中非磁性载体的横向杨氏模量为至少1,000Kg / mm 2，所述磁性层具有玻璃化转变温度为80℃至100℃，所述磁记录介质的总厚度小于12μm，并且还公开了一种磁记录介质，其包括其上具有磁性层的非磁性载体，所述磁性层包括铁磁颗粒和粘合剂，其中所述磁记录介质适用于基于所述记录介质的相对速度，以至少20m / sec的速度具有至少100μm的芯宽的磁头，并且所述磁性介质头部，所述非磁性载体的横向杨氏模量为至少1,000Kg / mm 2，所述磁性层的玻璃化转变温度为80° DEG至100℃，所述磁记录介质的总厚度小于12μm。

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