公开(公告)号：US4900622A

公开(公告)日：1990-02-13

申请号：US97607

申请日：1987-09-16

申请人： Masatoshi Nakayama ,  Koji Kobayashi ,  Kunihiro Ueda ,  Mitsuru Takai ,  Shigeo Kurose

发明人： Masatoshi Nakayama ,  Koji Kobayashi ,  Kunihiro Ueda ,  Mitsuru Takai ,  Shigeo Kurose

IPC分类号： C23C14/22 ,  G11B5/66

CPC分类号： C23C14/226 ,  G11B5/66 ,  Y10S428/90 ,  Y10T428/265

摘要： A magnetic recording medium comprising a ferromagnetic metal thin film comprised predominantly of cobalt on a substrate is improved in durability and performance by forming the ferromagnetic metal thin film as a multi-layered structure including at least two layers, one or both of which contain an organic polymer. A plasma-polymerized film may be provided as an interlayer between the layers of the metal thin film or as a topcoat.

摘要翻译： 包含主要由钴在基片上的强磁性金属薄膜的磁记录介质通过形成强磁性金属薄膜作为包括至少两层的多层结构而提高了耐久性和性能，其中一层或两层含有有机层 聚合物。 等离子体聚合膜可以作为金属薄膜层之间的中间层或顶涂层而提供。

公开(公告)号：US5512373A

公开(公告)日：1996-04-30

申请号：US208756

申请日：1994-03-09

申请人： Kunihiro Ueda ,  Koji Kobayashi ,  Mitsuru Takai ,  Masashi Higo

发明人： Kunihiro Ueda ,  Koji Kobayashi ,  Mitsuru Takai ,  Masashi Higo

IPC分类号： G11B5/725 ,  B32B27/00 ,  G11B5/66

CPC分类号： G11B5/725 ,  Y10S428/90 ,  Y10T428/3154 ,  Y10T428/31544

摘要： The problem of rusting relating to a magnetic recording medium composed of a non-magnetic base and a magnetic recording layer of a ferromagnetic metal layer formed thereon is overcome by a magnetic recording medium comprising a non-magnetic support, a ferromagnetic metal thin film as a magnetic recording layer and a lubricating layer, wherein the lubricating layer contains a mixture of a first lubricant having a polar perfluoro radial and a second lubricant expressed by the following formula: ##STR1## where R is a divalent radical having 2 or fewer carbons atoms;D is a polar radical selected from phosphorus-containing radical, hydroxyl, carboxyl and esterified carboxyl;R.sup.1 is selected from F, CF.sub.3 and C.sub.2 F.sub.5 ; andR.sup.2 and R.sub.3 are selected from F, CF.sub.3 and C.sub.2 F.sub.5, CF(CF.sub.3).sub.2 and C(CF.sub.3).sub.3.

摘要翻译： 由形成在其上的强磁性金属层的非磁性基底和磁记录层构成的磁记录介质的生锈问题由包括非磁性载体，强磁性金属薄膜 磁记录层和润滑层，其中润滑层包含具有极性全氟径向的第一润滑剂和由下式表示的第二润滑剂的混合物：其中R是具有2个或更少碳原子的二价基团; D是选自含磷自由基，羟基，羧基和酯化羧基的极性基团; R1选自F，CF3和C2F5; 并且R 2和R 3选自F，CF 3和C 2 F 5，CF（CF 3）2和C（CF 3）3。

公开(公告)号：US5549979A

公开(公告)日：1996-08-27

申请号：US159422

申请日：1993-11-29

申请人： Shinji Miyazaki ,  Mitsuru Takai ,  Koji Kobayashi

发明人： Shinji Miyazaki ,  Mitsuru Takai ,  Koji Kobayashi

IPC分类号： C23C14/06 ,  G11B5/64 ,  G11B5/66 ,  G11B5/73 ,  G11B5/738 ,  G11B5/84 ,  G11B5/85 ,  H01F10/16 ,  H01F41/20

CPC分类号： G11B5/7325 ,  G11B5/66 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/12931 ,  Y10T428/30

摘要： A magnetic recording medium comprising a nonmagnetic base, an SiO.sub.x (x=1.2-1.95) undercoat, an under-layer ferromagnetic metal film consisting of a Co--Ni alloy, an SiO.sub.x (x=1.2-1.95) intermediate layer, an upper-layer ferromagnetic metal protective film consisting of a Co--Ni alloy, a diamond-like carbon protective film, and a lubricant layer, formed in the order of mention, the angles of vapor deposition as measured from lines normal to the upper- and under-layer ferromagnetic metal films being all decreasing toward the upper surfaces. The magnetic recording medium is made by forming an SiO.sub.x (x=1.2-1.95) undercoat by vapor deposition on a flexible nonmagnetic base being fed, forming an under-layer ferromagnetic metal film by vapor deposition of a Co--Ni alloy at a large deposition angle on the supply side and at a small deposition angle on the take up side, rewinding the semi-finished product thus obtained, repeating the foregoing process steps, forming a diamond-like carbon protective film, and further forming a lubricant layer over the diamond-like carbon protective film, all within a vacuum chamber.

摘要翻译： 包含非磁性基底，SiOx（x = 1.2-1.95）底涂层的磁记录介质，由Co-Ni合金，SiOx（x = 1.2-1.95）中间层构成的底层强磁性金属膜， 由Co-Ni合金，类金刚石碳保护膜和润滑剂层构成的层状铁磁性金属保护膜，按顺序形成，从垂直于上，下的线的线测得的蒸镀角度， 层铁磁性金属膜全部向上表面减小。 磁记录介质是通过气相沉积形成SiOx（x = 1.2-1.95）底涂层而制成的，该柔性非磁性基体被馈送，通过Co-Ni合金在大量沉积下气相沉积形成底层强磁性金属膜 在供给侧的角度和在卷绕侧的小沉积角度，重新卷绕由此获得的半成品，重复上述工艺步骤，形成类金刚石碳保护膜，并进一步在金刚石上形成润滑剂层 样的碳保护膜，都在真空室内。

公开(公告)号：US5225234A

公开(公告)日：1993-07-06

申请号：US694913

申请日：1991-05-02

申请人： Mitsuru Takai ,  Koji Kobayashi

发明人： Mitsuru Takai ,  Koji Kobayashi

IPC分类号： C08L67/02 ,  G11B5/64 ,  G11B5/65 ,  G11B5/66 ,  G11B5/73 ,  G11B5/85

CPC分类号： G11B5/66 ,  G11B5/85 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12861 ,  Y10T428/265

摘要： A magnetic recording medium of the longitudinal recording type is comprised of a magnetic layer on one major surface of a non-magnetic substrate wherein the magnetic layer consists of at least two layers of cobalt-based ferromagnetic metal thin film which are formed by oblique evaporation at an incident angle varying between a maximum .theta.max and a minimum .theta.min. Assuming that the layers disposed close to and remote from the substrate are designated lowermost and uppermost layers, respectively, the lowermost layer of ferromagnetic metal thin film is deposited at a smaller .theta.max value than is the uppermost layer of ferromagnetic metal thin film. The uppermost layer is deposited at a greater .theta.min value than is the lowermost layer. The medium is improved in corrosion resistance and electromagnetic properties properties.

摘要翻译： 纵向记录类型的磁记录介质包括在非磁性基片的一个主表面上的磁性层，其中磁性层由至少两层钴基强磁性金属薄膜组成，这些层是通过在 在最大θmax和最小θmin之间变化的入射角。 假定靠近和远离衬底的层分别被指定为最下层和最上层，则铁磁金属薄膜的最下层以比铁磁性金属薄膜的最上层更小的最大值沉积。 最上层以比最下层更大的θmin值沉积。 该介质的耐腐蚀性和电磁特性得到改善。

公开(公告)号：US5525398A

公开(公告)日：1996-06-11

申请号：US854892

申请日：1992-03-20

申请人： Mitsuru Takai ,  Koji Kobayashi ,  Jiro Yoshinari

发明人： Mitsuru Takai ,  Koji Kobayashi ,  Jiro Yoshinari

IPC分类号： G11B5/64 ,  G11B5/65 ,  G11B5/66 ,  G11B5/73 ,  G11B5/733 ,  G11B5/85 ,  B32B3/10 ,  B32B7/02

CPC分类号： G11B5/85 ,  G11B5/66 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24942 ,  Y10T428/265

摘要： A perpendicular magnetic recording medium has a magnetic layer comprised of two stacked sublayers each in the form of ferromagnetic metal thin film consisting of columnar crystal grains wherein the angle .theta. between the average growth direction of the columnar crystal grains and a normal to the substrate is .theta..gtoreq.45.degree. for the lower sublayer and .theta..ltoreq.30.degree. for the upper sublayer, and the mean maximum diameter of columnar crystal grains of the lower sublayer is not smaller than the mean maximum diameter of columnar crystal grains of the upper sublayer. An apparatus suitable for the evaporation of the magnetic layer is arranged as shown in the Figure. Magnetic flux associated with the upper sublayer finds an escape to the lower sublayer, preventing formation of a closed loop of magnetic flux within the columnar crystal grains of the upper sublayer. The lower sublayer is magnetized, thus contributing to an improvement in reproduction output.

摘要翻译： 垂直磁记录介质具有由两个堆叠的子层组成的磁性层，每个层叠子层由柱状晶粒构成的强磁性金属薄膜形式，其中柱状晶粒的平均生长方向与基板的法线之间的角度θ为θ > / = 45°，下层的θ= 30°，下层的柱状晶粒的平均最大直径不小于上层的柱状晶粒的平均最大直径 。 如图所示，配置适合于磁性层蒸发的装置。 与上部子层相关联的磁通量向下部子层发现逃逸，从而防止在上部子层的柱状晶粒内形成磁通的闭环。 下部子层被磁化，因此有助于再现输出的改善。

公开(公告)号：US5453886A

公开(公告)日：1995-09-26

申请号：US181160

申请日：1994-01-13

申请人： Koji Kobayashi ,  Mitsuru Takai

发明人： Koji Kobayashi ,  Mitsuru Takai

IPC分类号： C23C14/22 ,  G11B5/66 ,  G11B5/85 ,  G11B5/00

CPC分类号： C23C14/226 ,  G11B5/66 ,  G11B5/85 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12646 ,  Y10T428/12861 ,  Y10T428/12931 ,  Y10T428/24942 ,  Y10T428/24975

摘要： A magnetic recording medium for digital recording has a magnetic layer on a non-magnetic substrate. The magnetic layer includes a lower layer of ferromagnetic metal thin film nearer to the substrate surface and an upper layer of ferromagnetic metal thin film, each ferromagnetic metal thin film being composed of columnar grains deposited by oblique evaporation process. The average growth directions of columnar grains in the lower and upper layers intersect each other from opposite sides of a normal to the substrate surface. Digital recording is carried out by means of a magnetic head in relative motion toward or opposite to the growth direction of columnar grains in the upper layer.

摘要翻译： 用于数字记录的磁记录介质在非磁性基板上具有磁性层。 磁性层包括更靠近基板表面的铁磁性金属薄膜的下层和强磁性金属薄膜的上层，每个强磁性金属薄膜由通过倾斜蒸发工艺沉积的柱状晶体组成。 下层和上层的柱状晶粒的平均生长方向从基板表面的法线的相对侧彼此相交。 数字记录通过与上层的柱状颗粒的生长方向相对运动或相反运动的磁头进行。

公开(公告)号：US4770924A

公开(公告)日：1988-09-13

申请号：US069228

申请日：1987-07-02

申请人： Mitsuru Takai ,  Koji Kobayashi ,  Masatoshi Nakayama ,  Kunihiro Ueda ,  Shigeo Kurose

发明人： Mitsuru Takai ,  Koji Kobayashi ,  Masatoshi Nakayama ,  Kunihiro Ueda ,  Shigeo Kurose

IPC分类号： G11B5/66

CPC分类号： G11B5/66 ,  Y10S428/90 ,  Y10T428/24942 ,  Y10T428/2495 ,  Y10T428/30

摘要： In a magnetic recording medium comprising a magnetic layer in the form of predominantly cobalt ferromagnetic metal thin film on a plastic substrate, physical properties like strength and crack resistance as well as electromagnetic properties of the magnetic layer are improved by forming it as a multi-layered structure consisting of at least two layers, wherein the magnetic layer has a specific profile of oxygen concentration. The medium may be provided with a topcoat and/or backcoat layer.

摘要翻译： 在包括在塑料基板上主要为钴铁磁性金属薄膜形式的磁性层的磁记录介质中，通过将其形成为多层结构来改善物理性质如强度和抗裂性以及磁性层的电磁特性 结构由至少两层组成，其中磁性层具有氧浓度的特定曲线。 介质可以设置有顶涂层和/或背涂层。

公开(公告)号：US07597972B2

公开(公告)日：2009-10-06

申请号：US11135441

申请日：2005-05-24

申请人： Yoshikazu Soeno ,  Mitsuru Takai ,  Katsumichi Tagami ,  Kazuya Shimakawa

发明人： Yoshikazu Soeno ,  Mitsuru Takai ,  Katsumichi Tagami ,  Kazuya Shimakawa

IPC分类号： G11B5/667

CPC分类号： G11B5/855

摘要： A magnetic recording medium is provided which has good recording/reproducing characteristics with a recording layer divided in a number of recording elements by a predetermined concavo-convex pattern, and a manufacturing method that enables efficient manufacture of such a magnetic recording medium. The magnetic recording medium includes a substrate, a soft magnetic layer formed over the substrate, a recording layer formed over the soft magnetic layer such as to have magnetic anisotropy in a direction perpendicular to surface, and being divided in a number of recording elements by a predetermined concavo-convex pattern, and a non-magnetic intermediate layer formed between the recording layer and the soft magnetic layer. The recording elements are formed to have a predetermined track shape in a data region.

摘要翻译： 提供了具有良好的记录/再现特性的磁记录介质，其中记录层通过预定的凹凸图案分成多个记录元件，并且能够有效地制造这种磁记录介质的制造方法。 磁记录介质包括基板，形成在基板上的软磁层，形成在软磁层上的记录层，以便在垂直于表面的方向上具有磁各向异性，并被多个记录元件划分为 预定的凹凸图案和形成在记录层和软磁性层之间的非磁性中间层。 记录元件形成为在数据区域中具有预定轨迹形状。

公开(公告)号：US07531103B2

公开(公告)日：2009-05-12

申请号：US10947289

申请日：2004-09-23

申请人： Shuichi Okawa ,  Kazuhiro Hattori ,  Katsuyuki Nakada ,  Mitsuru Takai

发明人： Shuichi Okawa ,  Kazuhiro Hattori ,  Katsuyuki Nakada ,  Mitsuru Takai

IPC分类号： B44C1/22

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/855 ,  Y10T428/24802

摘要： A mask forming method forms an A mask forming functional layer with an amorphous structure so as to cover an etched body, forms a B mask forming functional layer so as to cover the formed A mask forming functional layer, forms a convex/concave pattern in the formed B mask forming functional layer by carrying out a predetermined process to form a B mask on the A mask forming functional layer, and forms an A mask on the etched body by forming a convex/concave pattern in the A mask forming functional layer by dry etching the A mask forming functional layer using the B mask. By doing so, a convex/concave pattern with extremely small pattern fluctuations can be formed in the A mask forming functional layer.

摘要翻译： 掩模形成方法形成具有非晶结构的A掩模形成功能层以覆盖蚀刻体，形成B掩模形成功能层，以覆盖所形成的A掩模形成功能层，在其中形成凸/凹图案 通过在A掩模形成功能层上进行预定处理以形成B掩模形成B掩模形成功能层，并且通过在A掩模形成功能层中通过干燥形成凸/凹图案在蚀刻体上形成A掩模 使用B掩模蚀刻形成A掩模的功能层。 通过这样做，可以在A掩模形成功能层中形成具有极小图案波动的凸/凹图案。

公开(公告)号：US07480924B2

公开(公告)日：2009-01-20

申请号：US11056976

申请日：2005-02-14

申请人： Kazuhiro Hattori ,  Yoshikazu Soeno ,  Mitsuru Takai ,  Shuichi Okawa

发明人： Kazuhiro Hattori ,  Yoshikazu Soeno ,  Mitsuru Takai ,  Shuichi Okawa

IPC分类号： G11B7/09

CPC分类号： B82Y10/00 ,  G11B5/012 ,  G11B5/65 ,  G11B5/74 ,  G11B5/743 ,  G11B5/855 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/001 ,  G11B2005/0021 ,  G11B2005/0029

摘要： A magnetic recording and reproducing device includes: a magnetic recording medium in which a magnetic recording layer is formed in a concavo-convex pattern so that tracks are formed by convex portions of a predetermined track width and arranged in parallel in the track width direction; a heating head for heating the magnetic recording medium to partially reduce coercivity of the tracks; a recording head for applying a recording magnetic field to a heated portion of the magnetic recording medium to record magnetic data on the tracks; and a reproducing head for detecting a reproducing magnetic field of the tracks. In this configuration, an effective recording area has an effective recording width that is equal to or more than the track width, and equal to or less than a sum of the track width and a doubled value of width of concave portions between the tracks.

摘要翻译： 磁记录和再现装置包括：磁记录介质，其中磁记录层形成为凹凸图案，使得轨道由预定轨道宽度的凸部形成并沿轨道宽度方向平行布置; 用于加热磁记录介质以部分地降低轨道的矫顽力的加热头; 记录头，用于将记录磁场施加到磁记录介质的加热部分，以将磁数据记录在轨道上; 以及用于检测轨道的再现磁场的再现头。 在该配置中，有效记录区域具有等于或大于轨道宽度的有效记录宽度，并且等于或小于轨道宽度和轨迹之间的凹部宽度的双倍值之和。