公开(公告)号：US4893203A

公开(公告)日：1990-01-09

申请号：US229426

申请日：1988-08-08

申请人： Joichiro Ezaki ,  Yoshiaki Itoh ,  Shunichi Katase ,  Mikio Matsuzaki

发明人： Joichiro Ezaki ,  Yoshiaki Itoh ,  Shunichi Katase ,  Mikio Matsuzaki

IPC分类号： G11B5/60 ,  G11B5/31

CPC分类号： G11B5/3106

摘要： A magnetic head comprises a slider having a flying plane on its one surface opposed to a magnetic recording medium, a reading/writing element attached to the end surface at the air discharge side of the slider and a protective layer formed on the end surface so as to cover the reading/writing element, wherein an edge of the protective layer is inside an edge of the end surface at at least the upper surface which is opposite the flying plane, so that there is formed a space between the edge of the end surface and the edge of the protective layer.

摘要翻译： 磁头包括在其与磁记录介质相对的一个表面上具有飞行平面的滑块，附接到滑块的排气侧端面的读/写元件和形成在端面上的保护层，以便 以覆盖读/写元件，其中保护层的边缘至少在与飞面相对的上表面处在端表面的边缘内，使得在端面的边缘之间形成空间 和保护层的边缘。

公开(公告)号：US4928195A

公开(公告)日：1990-05-22

申请号：US215524

申请日：1988-07-06

申请人： Joichiro Ezaki ,  Yoshiaki Ito ,  Mikio Matsuzaki

发明人： Joichiro Ezaki ,  Yoshiaki Ito ,  Mikio Matsuzaki

IPC分类号： G11B21/21 ,  G11B5/60

CPC分类号： G11B5/6005

摘要： A flying magnetic head designed for use in a magnetic disk apparatus and equipped with a reading/writing element attached to an air discharge end of a slider having a flying plane on its one surface opposed to a magnetic recording medium. The slider is so formed as to have specified outer dimensions including a thickness of 0.65 mm or less from the flying plane to the opposite surface on the reverse side, a length of 1 to 3 mm in the direction of air discharge, and a width of 1 to 2.5 mm in the direction orthogonal to the air discharge. Accordingly, even with a small flying height under 0.1 .mu.m, high stability is attained in the flying characteristic with sufficient durability, and a compact structure is achievable at low production cost.

摘要翻译： 一种设计用于磁盘装置的飞行磁头，其配备有在与磁记录介质相对的一个表面上具有飞行平面的滑块的排气端附接的读/写元件。 滑块形成为具有从飞行平面到相反侧的相对表面的0.65mm以下的厚度的规定的外部尺寸，在空气排出方向上的长度为1〜3mm，宽度为 在与空气放电正交的方向上为1〜2.5mm。 因此，即使在小于0.1μm的飞行高度的情况下，在具有足够的耐久性的飞行特性中也获得高稳定性，并且以低制造成本可实现紧凑的结构。

公开(公告)号：US5847899A

公开(公告)日：1998-12-08

申请号：US779339

申请日：1997-01-06

申请人： Kazumasa Fukuda ,  Masanori Sakai ,  Mikio Matsuzaki ,  Joichiro Ezaki

发明人： Kazumasa Fukuda ,  Masanori Sakai ,  Mikio Matsuzaki ,  Joichiro Ezaki

IPC分类号： G11B5/02 ,  G11B5/012 ,  G11B5/11 ,  G11B5/31 ,  G11B5/39 ,  G11B5/40 ,  G11B5/64 ,  G11B5/65 ,  G11B5/72 ,  G11B5/73 ,  G11B5/82 ,  G11B33/14

CPC分类号： G11B5/012 ,  G11B33/1493 ,  G11B5/11 ,  G11B5/40 ,  G11B5/64 ,  G11B5/72

摘要： A thin film magnetic head includes a slider and thin film magnetic transducers, the slider supporting the thin film magnetic transducers. At least one of these thin film magnetic transducers is a magnetoresistive read element. The surface resistivity .rho. of the magnetic film of the magnetic disk is within the range of .rho..gtoreq.0.03.OMEGA..multidot.cm. Electric leak from the thin film magnetic head to the magnetic disk and electric discharge between these two are prevented.

摘要翻译： 薄膜磁头包括滑块和薄膜磁换能器，滑块支撑薄膜磁换能器。 这些薄膜磁换能器中的至少一个是磁阻读取元件。 磁盘的磁性膜的表面电阻率rho在r = 0.03 OMEGA×cm的范围内。 从薄膜磁头到磁盘的电泄漏和这两者之间的放电被防止。

公开(公告)号：US4939604A

公开(公告)日：1990-07-03

申请号：US327699

申请日：1989-03-23

申请人： Kazumasa Fukuda ,  Masanori Sakai ,  Joichiro Ezaki ,  Mikio Matsuzaki

发明人： Kazumasa Fukuda ,  Masanori Sakai ,  Joichiro Ezaki ,  Mikio Matsuzaki

IPC分类号： G11B5/00 ,  G11B5/73 ,  G11B5/82

CPC分类号： G11B5/7315 ,  G11B5/00 ,  G11B5/82

摘要： A magnetic head comprises a slider which holds recording/writing elements at its medium opposing surface constituting a lifting force generating part and the surface area of the medium opposing surface is at most 2 mm.sup.2.A magnetic recording and reproducing apparatus has such magnetic head which is disposed on a magnetic disk having a magnetic recording layer formed on a rigid substrate while the disk is rotated at a high speed so that magnetic recording and reproducing are conducted between the magnetic head and the magnetic disk, wherein the surface roughness R.sub.max of the magnetic disk is at most 100 .ANG..

摘要翻译： 磁头包括在构成提升力产生部件的介质相对表面处保持记录/写入元件的滑块，并且介质相对表面的表面积至多为2mm 2。 磁记录和再现装置具有这样的磁头，该磁头设置在具有形成在刚性基板上的磁记录层的磁盘上，同时盘以高速旋转，从而在磁头和磁头之间进行磁记录和再现 磁盘，其中磁盘的表面粗糙度Rmax为至多100安培。

公开(公告)号：US5134531A

公开(公告)日：1992-07-28

申请号：US534235

申请日：1990-06-07

申请人： Mikio Matsuzaki ,  Shunichi Katase

发明人： Mikio Matsuzaki ,  Shunichi Katase

IPC分类号： G11B5/187 ,  G11B5/31 ,  G11B5/60 ,  G11B21/21

CPC分类号： G11B5/3103 ,  G11B5/1871 ,  G11B5/6005

摘要： A magnetic head includes a slider provided with at least one reading/writing element wherein the slider has a pair of rail portions projecting with a space therebetween from the surface opposing a magnetic recording medium so as to extend in the direction of air discharge. The slider surface between the pair of rail portions includes first and second grooves formed inside and along rail portions and a flat portion formed between the first and second grooves, wherein the depth .alpha. from the surface of one of the rail portions to the flat portion and the depth .beta. from the flat portion to the bottom of the first or second groove satisfy a relation of .alpha.>.beta..

摘要翻译： 磁头包括设置有至少一个读/写元件的滑块，其中滑块具有从与磁记录介质相对的表面之间的空间突出的一对轨道部分，以沿着空气排放的方向延伸。 一对轨道部分之间的滑块表面包括形成在轨道部分内部和沿着轨道部分的第一和第二槽，以及形成在第一和第二槽之间的平坦部分，其中从轨道部分之一到平坦部分的表面的深度α和 从第一或第二凹槽的平坦部分到底部的深度β满足α>β的关系。

公开(公告)号：US07920357B2

公开(公告)日：2011-04-05

申请号：US11907095

申请日：2007-10-09

申请人： Isamu Sato ,  Tetsuya Roppongi ,  Yuichi Watabe ,  Norikazu Ota ,  Hiroshi Ikeda ,  Mikio Matsuzaki

发明人： Isamu Sato ,  Tetsuya Roppongi ,  Yuichi Watabe ,  Norikazu Ota ,  Hiroshi Ikeda ,  Mikio Matsuzaki

IPC分类号： G11B5/17

CPC分类号： G11B5/3123 ,  B82Y10/00 ,  G11B5/1278 ,  G11B5/743 ,  G11B2005/0005

摘要： Provided is a thin-film magnetic head capable of writing data with high accuracy on a magnetic recording medium having high coercive force without heating. The head comprises an electromagnetic coil element comprising: a main magnetic pole; an auxiliary magnetic pole; and a write coil formed so as to pass through at least between the main magnetic pole and the auxiliary magnetic pole, for generating the write magnetic field. In this head, a part of the write coil has a layered structure of: a resonance coil layer for generating a resonance magnetic field having ferromagnetic resonance frequency of a magnetic recording layer of a magnetic recording medium or having a frequency in the vicinity thereof; and a write coil layer. And further, the resonance coil layer and the write coil layer sandwich an insulating layer therebetween.

摘要翻译： 提供了一种能够在没有加热的情况下在具有高矫顽力的磁记录介质上高精度地写入数据的薄膜磁头。 头部包括电磁线圈元件，包括：主磁极; 辅助磁极; 以及形成为至少在主磁极和辅助磁极之间通过的用于产生写入磁场的写入线圈。 在该磁头中，写入线圈的一部分具有以下结构：谐振线圈层，用于产生具有磁记录介质的磁记录层的铁磁共振频率或其附近频率的共振磁场; 和写入线圈层。 此外，共振线圈层和写入线圈层之间夹有绝缘层。

公开(公告)号：US06680820B2

公开(公告)日：2004-01-20

申请号：US10158914

申请日：2002-06-03

申请人： Mikio Matsuzaki ,  Kazumasa Fukuda ,  Takamitsu Tsuna

发明人： Mikio Matsuzaki ,  Kazumasa Fukuda ,  Takamitsu Tsuna

IPC分类号： G11B560

CPC分类号： G11B5/6005

摘要： A method of maintaining a constant flying height of a magnetic head: adapted to maintain a flying height of a magnetic head on a magnetic disk substantially constant irrespective of a change of a skew angle, utilizing a device comprising a magnetic disk, a positioning device, a head supporting device and a magnetic head; said positioning device supporting one end of said head supporting device and rotating the head supporting device on a first plane placed on a second plane of said magnetic disk within a predetermined skew angle range; the head supporting device supporting said magnetic head at the other end thereof; the magnetic head being attached with reading/writing elements at an air discharge end of a slider having flying planes on a side of a third plane thereof opposing the magnetic disk; a thickness of said slider from each of the flying planes to an opposite surface on the reverse side thereof being 0.65 mm or less; a length in a first direction of air discharge thereof being 3 mm or less, and a width in a second direction orthogonal to the first direction of air discharge thereof being 2.5 mm or less; wherein a change of the flying height of the magnetic head on the magnetic disk is 0.02 &mgr;m or less, when the skew angle is changed in a range of −20 to 20 degree.

摘要翻译： 一种保持磁头恒定飞行高度的方法：适于使磁头在磁盘上的飞行高度基本上恒定，而与斜角的变化无关，利用包括磁盘，定位装置， 头部支撑装置和磁头; 所述定位装置支撑所述头部支撑装置的一端并将头部支撑装置旋转在预定的倾斜角度范围内的位于所述磁盘的第二平面上的第一平面上; 头支撑装置在其另一端支撑所述磁头; 所述磁头在与所述磁盘相对的第三平面的一侧具有飞平面的滑块的排气端处附接有读/写元件; 所述滑块从每个飞行平面到其相反侧的相对表面的厚度为0.65mm以下; 空气排出的第一方向的长度为3mm以下，与第一空气排出方向正交的第二方向的宽度为2.5mm以下; 其中，当所述倾斜角度在-20至20度的范围内变化时，所述磁盘上的磁头的飞行高度的变化为0.02μm或更小。

公开(公告)号：US5238089A

公开(公告)日：1993-08-24

申请号：US921608

申请日：1992-08-03

申请人： Mikio Matsuzaki ,  Toru Yoshino ,  Toshitaka Izumihara

发明人： Mikio Matsuzaki ,  Toru Yoshino ,  Toshitaka Izumihara

IPC分类号： F16D65/00 ,  F16D65/12 ,  F16D65/847 ,  F16D69/00

CPC分类号： F16D65/847 ,  F16D65/0006 ,  F16D65/12 ,  F16D2065/1308 ,  F16D2065/1312 ,  F16D2065/1328 ,  F16D2069/004 ,  F16D65/121

摘要： A device for preventing the squeak in a disc brake apparatus in which friction pads comprised of a semi-metallic or a non-asbestos material are pushed onto a disc rotor to perform braking is characterized in that the disc rotor is circumferentially divided by the use of slits or couplings so that the frequency of second-order resonance in the longitudinal vibration of the rotor is higher than 15 kHz and thus inaudible to humans.

摘要翻译： 一种用于防止在其中将由半金属或非石棉材料构成的摩擦垫被推到盘形转子上以进行制动的盘式制动装置中的吱吱声的装置，其特征在于，通过使用 狭缝或联轴器，使得转子的纵向振动中的二次共振的频率高于15kHz，因此对人不可听见。

公开(公告)号：US4691810A

公开(公告)日：1987-09-08

申请号：US906658

申请日：1986-09-12

申请人： Mikio Matsuzaki

发明人： Mikio Matsuzaki

IPC分类号： F16D55/224 ,  F16D55/22 ,  F16D65/00 ,  F16D65/092 ,  F16D65/38

CPC分类号： F16D65/092 ,  F16D55/22 ,  F16D65/0006

摘要： A pad is engaged by a rotor by hydraulic pressure whereas another pad is engaged by the rotor on the other side thereof by a pair of pawls of the caliper under reaction. The reaction of the caliper is imparted to the other pad in a plane where a pair of the pawls of the caliper are opposed to the other pad and in a position at the marginal edges of the other pad, thereby minimizing squeal when the brake is applied.

摘要翻译： 垫片由转子通过液压接合，而另一个垫片由另一侧的转子通过卡爪的一对棘爪在反应下接合。 卡钳的反应在其中一对卡爪的爪与另一个垫相对的平面中以及在另一个垫的边缘处的位置中被赋予另一个垫，由此在施加制动时使最小化的尖叫 。

公开(公告)号：US08358127B2

公开(公告)日：2013-01-22

申请号：US12755803

申请日：2010-04-07

申请人： Isamu Sato ,  Hiroshi Ikeda ,  Mikio Matsuzaki ,  Tetsuya Roppongi ,  Noboru Yamanaka ,  Tsutomu Aoyama

发明人： Isamu Sato ,  Hiroshi Ikeda ,  Mikio Matsuzaki ,  Tetsuya Roppongi ,  Noboru Yamanaka ,  Tsutomu Aoyama

IPC分类号： G01R33/02

CPC分类号： G11B5/455 ,  G01R33/098 ,  G01R33/1284

摘要： A measuring circuit system in a magnetic field measuring apparatus of the invention has an amplifier and a band-pass filter connected in sequence on an output terminal side of the TMR element, the band-pass filter is a narrow-range band-pass filter such that a peak pass frequency of the filter that is a center is a basic frequency selected from a range of 10 to 40 GHz and a band width centered around the basic frequency is a narrow range of ±0.5 to ±4 GHz; and with the measuring circuit system, an SIN ratio (SNR) of 3 dB or greater is obtained, the SNR being defined by a ratio of an amplitude S of a high-frequency generated signal induced by the TMR element to a total noise N that is a sum of a head noise generated by the TMR element and a circuit noise generated by the amplifier. With such a configuration, an in-plane high-frequency magnetic field generated by a microwave-assisted magnetic head is reliably and precisely measured.

摘要翻译： 本发明的磁场测量装置中的测量电路系统具有在TMR元件的输出端侧依次连接的放大器和带通滤波器，带通滤波器是窄范围带通滤波器， 作为中心的滤波器的峰值通过频率是从10〜40GHz的范围选择的基本频率，以基本频率为中心的带宽为±0.5〜±4GHz的窄范围; 并且利用测量电路系统，获得3dB或更大的SIN比（SNR），SNR由TMR元件引起的高频产生信号的振幅S与总噪声N的比值定义， 是由TMR元件产生的头噪声和由放大器产生的电路噪声的总和。 通过这样的结构，可以可靠且精确地测量由微波辅助磁头产生的面内高频磁场。