公开(公告)号：US20050117246A1

公开(公告)日：2005-06-02

申请号：US10962442

申请日：2004-10-13

申请人： Minoru Sueki ,  Tetsuji Nishida

发明人： Minoru Sueki ,  Tetsuji Nishida

IPC分类号： G11B23/30 ,  G11B5/008 ,  G11B5/09 ,  G11B5/584 ,  G11B20/12 ,  G11B23/36

CPC分类号： G11B5/00813 ,  G11B5/00878 ,  G11B5/584

摘要： Disclosed is a magnetic tape which contributes to a high recording density, and which achieves an enhanced flexibility in a width of a data track and a data format. The magnetic tape includes servo tracks being recorded thereon. These servo tracks contain respective servo signals, and are arranged lengthwise and adjacent to one another over a whole of a width or a part of the magnetic tape. Further, each of the servo tracks includes address signals being recorded thereon at predetermined intervals in isolation from the corresponding servo signals. These address signals indicate their respective locations of corresponding one of the servo tracks and their respective lengthwise locations on the magnetic tape. In addition, the servo signals are read from the respective servo bands, and are used to adjust tracking of a magnetic head on the magnetic tape.

摘要翻译： 公开了一种有助于高记录密度并且实现数据轨道的宽度和数据格式的增强的灵活性的磁带。 磁带包括记录在其上的伺服磁道。 这些伺服轨道包含相应的伺服信号，并且在磁带的整个宽度或一部分上彼此纵向地并且彼此相邻布置。 此外，每个伺服轨道包括以相对于伺服信号隔离的预定间隔记录在其上的地址信号。 这些地址信号表示它们在磁带上的对应的一个伺服磁道及其各自的纵向位置的相应位置。 此外，从各伺服带读取伺服信号，并用于调整磁带上磁头的跟踪。

公开(公告)号：US5407725A

公开(公告)日：1995-04-18

申请号：US184347

申请日：1994-01-21

申请人： Katsumi Ryoke ,  Yutaka Kakuishi ,  Toshiyuki Kitahara ,  Tetsuji Nishida

发明人： Katsumi Ryoke ,  Yutaka Kakuishi ,  Toshiyuki Kitahara ,  Tetsuji Nishida

IPC分类号： C09D5/23 ,  C09D127/06 ,  C09D175/04 ,  G11B5/708 ,  G11B5/73 ,  G11B5/00

CPC分类号： G11B5/708 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/25 ,  Y10T428/2982 ,  Y10T428/30

摘要： A magnetic recording medium comprising a non-magnetic support having thereon a magnetic layer comprising a ferromagnetic powder and a binder resin is disclosed. The magnetic layer contains a first carbon black having a DBP absorption of from 40 to 120 ml/100 g and a second carbon black having a DBP absorption of from 140 to 200 ml/100 g. Both carbon black have an average particle size of from 5 to 35 m.mu.. The medium maintains a high output level and has excellent running stability. Therefore, the dropout due to abrasion caused by an increase in friction coefficient and output reduction due to head clogging, can be avoided.

摘要翻译： 公开了一种包括其上具有包含铁磁粉末和粘合剂树脂的磁性层的非磁性载体的磁记录介质。 磁性层含有DBP吸收为40〜120ml / 100g的第一炭黑和DBP吸收为140〜200ml / 100g的第二炭黑。 两种炭黑的平均粒径为5〜35μm。 介质保持高输出水平，运行稳定性好。 因此，可以避免由于摩擦系数的增加和由于头部堵塞引起的输出减少而引起的磨损引起的压差。

公开(公告)号：US06744585B1

公开(公告)日：2004-06-01

申请号：US09557857

申请日：2000-04-26

申请人： Tetsuji Nishida ,  Satoshi Matsubaguchi ,  Takeshi Nagata

发明人： Tetsuji Nishida ,  Satoshi Matsubaguchi ,  Takeshi Nagata

IPC分类号： G11B509

CPC分类号： G11B5/09 ,  G11B5/312 ,  G11B5/735 ,  G11B5/738

摘要： Provision of a highly reliable magnetic recording medium with able to record further high density recording, usable advantageously as a magnetic tape for recording computer data, and having a further improved SNR, and a method for reproducing signals magnetically recorded on a magnetic recording medium to reproduce more desirably magnetic recording such as computer data with high density recording or the like. The magnetic recording medium having, on either side of a flexible nonmagnetic support, a nonmagnetic layer containing a nonmagnetic powder and a binder, and a magnetic layer containing a ferromagnetic powder and a binder, having a thickness in the range of from 0.2 to 0.6 &mgr;m in this order, where a laminated head is used for reproduction. The method for reproducing signals magnetically recorded medium having, on either side of a flexible nonmagnetic support, a nonmagnetic layer containing a nonmagnetic powder and a binder, and a magnetic layer, with a thickness ranging from 0.2 to 0.6 &mgr;m, containing a ferromagnetic powder and a binder in this order, where a laminated head is used as a reproducing head.

摘要翻译： 提供能够记录进一步高密度记录的高度可靠的磁记录介质，有利地用作用于记录计算机数据的磁带并具有进一步改善的SNR，以及用于再现磁记录在磁记录介质上以再现的信号的方法 更希望的磁记录，例如具有高密度记录的计算机数据等。 在柔性非磁性载体的任一侧上，含有非磁性粉末和粘结剂的非磁性层和含有铁磁粉末和粘合剂的磁性层的磁记录介质的厚度在0.2至0.6μm的范围内 在此顺序中，使用层压头进行再现。 用于再现信号的磁记录介质的方法，其在柔性非磁性载体的任一侧上具有含有非磁性粉末和粘合剂的非磁性层和厚度范围为0.2至0.6μm的磁性层，其含有铁磁粉末和 粘合剂，其中层压头被用作再现头。

公开(公告)号：US06645648B2

公开(公告)日：2003-11-11

申请号：US09912648

申请日：2001-07-24

申请人： Hiroaki Doushita ,  Satoshi Matsubaguchi ,  Tetsuji Nishida

发明人： Hiroaki Doushita ,  Satoshi Matsubaguchi ,  Tetsuji Nishida

IPC分类号： G11B5735

CPC分类号： G11B5/70678 ,  G11B5/7305

摘要： Provided is a magnetic recording medium having good electromagnetic characteristics, particularly both improved high-density recording characteristics and good durability, and particularly a C/N ratio that is markedly improved in the high-density recording region. A magnetic recording medium comprising a nonmagnetic lower layer and a magnetic layer provided in this order on a support wherein said magnetic layer comprises a ferromagnetic metal powder or a ferromagnetic hexagonal ferrite powder and a binder and has a coercive force equal to or higher than 143 kA/m. Said magnetic recording medium is a medium for recording signals having a surface recording density ranging from 0.2 to 2 Gbit/inch2; said support has a thickness equal to or less than 5.5 &mgr;m and a Young's modulus in the MD direction equal to or higher than 11,000 Mpa; and said support has on the reverse surface from said magnetic layer a backcoat layer, said backcoat layer having not fewer than 200 and not more than 1,000 protrusions having a height equal to or higher than 50 nm per 10,000 &mgr;m2.

摘要翻译： 提供了具有良好的电磁特性，特别是提高的高密度记录特性和良好的耐久性的磁记录介质，特别是在高密度记录区域中显着提高的C / N比。 一种磁性记录介质，其特征在于，在支承体上依次设有非磁性下层和磁性层，其中，所述磁性层包含强磁性金属粉末或铁磁性六角铁氧体粉末和粘结剂，矫顽力为143kA以上 / m。 所述磁记录介质是用于记录具有0.2至2Gbit / inch 2的表面记录密度的信号的介质; 所述载体的厚度等于或小于5.5μm，MD方向的杨氏模量等于或高于11000Mpa; 并且所述支撑体在所述磁性层的背面上具有背涂层，所述背涂层具有不小于200且不大于1,000个突起，其高度等于或高于每10,000mum 2的50nm。

公开(公告)号：US07110211B2

公开(公告)日：2006-09-19

申请号：US10962442

申请日：2004-10-13

申请人： Minoru Sueki ,  Tetsuji Nishida

发明人： Minoru Sueki ,  Tetsuji Nishida

IPC分类号： G11B5/584 ,  G11B19/02

CPC分类号： G11B5/00813 ,  G11B5/00878 ,  G11B5/584

摘要： Disclosed is a magnetic tape which contributes to a high recording density, and which achieves an enhanced flexibility in a width of a data track and a data format. The magnetic tape includes servo tracks being recorded thereon. These servo tracks contain respective servo signals, and are arranged lengthwise and adjacent to one another over a whole of a width or a part of the magnetic tape. Further, each of the servo tracks includes address signals being recorded thereon at predetermined intervals in isolation from the corresponding servo signals. These address signals indicate their respective locations of corresponding one of the servo tracks and their respective lengthwise locations on the magnetic tape. In addition, the servo signals are read from the respective servo bands, and are used to adjust tracking of a magnetic head on the magnetic tape.

摘要翻译： 公开了一种有助于高记录密度并且实现数据轨道的宽度和数据格式的增强的灵活性的磁带。 磁带包括记录在其上的伺服磁道。 这些伺服轨道包含相应的伺服信号，并且在磁带的整个宽度或一部分上彼此纵向地并且彼此相邻布置。 此外，每个伺服轨道包括以相对于伺服信号隔离的预定间隔记录在其上的地址信号。 这些地址信号表示它们在磁带上的对应的一个伺服磁道及其各自的纵向位置的相应位置。 此外，从各伺服带读取伺服信号，并用于调整磁带上磁头的跟踪。

公开(公告)号：US20050117493A1

公开(公告)日：2005-06-02

申请号：US10985985

申请日：2004-11-12

申请人： Minoru Sueki ,  Tetsuji Nishida

发明人： Minoru Sueki ,  Tetsuji Nishida

IPC分类号： G11B23/30 ,  G11B5/584 ,  G11B7/00 ,  G11B7/003 ,  G11B7/09 ,  G11B7/24 ,  G11B23/36 ,  G11B27/10 ,  G11B27/32

CPC分类号： G11B27/323 ,  G11B7/003 ,  G11B7/0938 ,  G11B27/107 ,  G11B2220/90

摘要： Disclosed is an optical tape which contributes to a high recording density, and which achieves an enhanced flexibility in a width of a data track and a data format. The optical tape includes servo tracks being recorded thereon. These servo tracks contain respective servo signals, and are arranged lengthwise and adjacent to one another over a whole of a width or a part of the optical tape. Further, each of the servo tracks includes address signals being recorded thereon at predetermined intervals in isolation from the corresponding servo signals. These address signals indicate their respective locations of corresponding one of the servo tracks and their respective lengthwise locations on the optical tape. In addition, the servo signals are read from the respective servo tracks, and are used to adjust tracking on the optical tape.

摘要翻译： 公开了一种有助于高记录密度并且实现数据轨道的宽度和数据格式的增强的灵活性的光带。 光带包括记录在其上的伺服轨道。 这些伺服磁道包含相应的伺服信号，并且在光带的整个宽度或一部分上彼此纵向和相邻地布置。 此外，每个伺服轨道包括以相对于伺服信号隔离的预定间隔记录在其上的地址信号。 这些地址信号表示它们在光带上的对应的一个伺服磁道及其各自的纵向位置的相应位置。 此外，伺服信号从相应的伺服磁道读取，并用于调整光带上的跟踪。

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。

公开(公告)号：US5082729A

公开(公告)日：1992-01-21

申请号：US259668

申请日：1988-10-19

申请人： Tetsuji Nishida ,  Shinji Saito ,  Naoyoshi Chino

发明人： Tetsuji Nishida ,  Shinji Saito ,  Naoyoshi Chino

IPC分类号： C09D5/23 ,  G11B5/714 ,  G11B5/716

CPC分类号： G11B5/716 ,  G11B5/714 ,  Y10S428/90 ,  Y10T428/257 ,  Y10T428/265

摘要： A magnetic recording medium for a video tape recorder is disclosed, comprising a nonmagnetic support having thereon in the following order an under magnetic layer containing ferromagnetic particles of metal oxide and an upper magnetic layer containing ferromagnetic particles of metal oxide, wherein said under magnetic layer contains the ferromagnetic particles having a specific surface area by a BET method of from 26 to 50 m.sup.2 /g and a coercive force (Hc.sub.1) of from 500 to 1,000 Oe; said upper magnetic layer contains the ferromagnetic particles having a specific surface area by a BET method of from 30 to 60 m.sup.2 /g and a coercive force (Hc.sub.2) of from 600 to 1,200 Oe; the dry thickness of the upper magnetic layer is from 0.1 to 1.0 .mu.m; and the coercive force (Hc.sub.2) of the ferromagnetic particles for the upper magnetic layer is higher than the coercive force (Hc.sub.1) of the ferromagnetic particles for the under magnetic layer.

摘要翻译： 公开了一种用于磁带录像机的磁记录介质，包括一非磁性载体，其上依次具有包含金属氧化物的铁磁颗粒的磁性层和含有金属氧化物的铁磁性颗粒的上磁层，其中所述下磁层包含 所述铁磁性粒子的BET比表面积为26〜50m 2 / g，矫顽力（Hc1）为500〜1000Oe; 所述上磁性层含有BET法为30〜60m 2 / g，矫顽力（Hc2）为600〜1200Oe的比表面积的铁磁性粒子， 上磁层的干厚度为0.1〜1.0μm; 并且用于上磁性层的铁磁颗粒的矫顽力（Hc2）高于用于下磁性层的铁磁颗粒的矫顽力（Hc1）。