专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US07983005B2 Thin film magnetic head with flying height adjustment capability 有权
标题翻译：具有飞行高度调节功能的薄膜磁头
公开(公告)号：US07983005B2
公开(公告)日：2011-07-19
申请号：US11787097
申请日：2007-04-12
申请人： Takayoshi Ohtsu , Nobumasa Nishiyama
发明人： Takayoshi Ohtsu , Nobumasa Nishiyama
IPC分类号： G11B5/31 , G11B5/60
CPC分类号： G11B5/3136 , B82Y10/00 , B82Y25/00 , G11B5/115 , G11B5/3909 , G11B5/3912 , G11B5/3967 , G11B5/6005 , G11B5/6064 , Y10T428/1136
摘要： For a Tunneling Magnetoresistive (TMR) element, an electrode is used as a magnetic shield or vice versa. This can pose a problem in that noise from a heater source or electromagnetic induction has a direct influence on the TMR element, namely, on a read signal. According to one embodiment of the present invention, however, a thin film head portion has an insulating film, a heater, an electromagnetic shield, a read element, and a write element laminated in this order from the side of a slider. Insulating films isolate the constituent elements above from each other, and a protection film covers the group mentioned above. The heater is a thin film resistive element made of NiCr or the like, and is disposed above the insulating film. The electromagnetic shield is a magnetic film made of permalloy or the like, and covers the heater. The read element comprises a lower shield and electrode, a TMR element, and an upper shield and electrode. The write element comprises a lower magnetic pole piece, an upper magnetic pole piece, and a coil formed therebetween. The thin film head portion is formed with a common terminal.
摘要翻译：对于隧道磁阻（TMR）元件，电极用作磁屏蔽，反之亦然。这可能引起来自加热器源或电磁感应的噪声对TMR元件的直接影响，即读取信号的问题。然而，根据本发明的一个实施例，薄膜头部分具有从滑块的侧面依次层叠的绝缘膜，加热器，电磁屏蔽，读取元件和写入元件。绝缘膜将上述构成元件彼此隔离，并且保护膜覆盖上述组。加热器是由NiCr等制成的薄膜电阻元件，并且设置在绝缘膜的上方。电磁屏蔽是由坡莫合金等制成的磁膜，并覆盖加热器。读取元件包括下屏蔽和电极，TMR元件，以及上屏蔽和电极。写元件包括下磁极片，上磁极片和在它们之间形成的线圈。薄膜头部形成有公共端子。

42. 发明申请

US20110069410A1 MAGNETIC-RECORDING-DISK TEST-HEAD AND METHOD OF MANUFACTURING A MAGNETIC-RECORDING DISK USING THE MAGNETIC-RECORDING-DISK TEST-HEAD 有权
标题翻译：磁记录盘测试头和使用磁记录盘测试头制造磁记录盘的方法
公开(公告)号：US20110069410A1
公开(公告)日：2011-03-24
申请号：US12537982
申请日：2009-08-07
申请人： Hidekazu KASHIWASE , Hiroyuki SUZUKI , Mitsuhiro SHODA , Takayoshi OHTSU , Kiyoshi HASHIMOTO
发明人： Hidekazu KASHIWASE , Hiroyuki SUZUKI , Mitsuhiro SHODA , Takayoshi OHTSU , Kiyoshi HASHIMOTO
IPC分类号： G11B21/02 , G11B5/60
CPC分类号： G11B5/8404 , G11B5/3136 , G11B5/455 , G11B5/6064
摘要： A magnetic-recording-disk test-head. The magnetic-recording-disk test-head includes a slider, a test pad and a slider-surface-shape control mechanism. The slider includes a leading edge and a trailing edge. The test pad is disposed at a trailing-edge side of the slider and is configured to remove and to detect asperities on a magnetic-recording disk. The slider-surface-shape control mechanism is configured to change a shape of an air-bearing surface of the slider and is disposed at a leading-edge side of the slider.
摘要翻译：磁记录盘测试头。磁记录盘测试头包括滑块，测试垫和滑块表面形状控制机构。滑块包括前缘和后缘。测试垫设置在滑块的后缘侧，并且被配置为移除并检测磁记录盘上的凹凸。滑块表面形状控制机构构造为改变滑块的空气轴承表面的形状并且设置在滑块的前缘侧。

43. 发明授权

US07719796B2 Suspension for hard disk drive which enables easy dynamic electric testing 有权
标题翻译：用于硬盘驱动器的悬挂，可实现轻松的动态电气测试
公开(公告)号：US07719796B2
公开(公告)日：2010-05-18
申请号：US11480040
申请日：2006-06-30
申请人： Haruhide Takahashi , Kousaku Wakatsuki , Shinobu Hagiya , Takayoshi Ohtsu , Kouji Kataoka , Yohtaroh Ichimura
发明人： Haruhide Takahashi , Kousaku Wakatsuki , Shinobu Hagiya , Takayoshi Ohtsu , Kouji Kataoka , Yohtaroh Ichimura
IPC分类号： G11B21/21
CPC分类号： G11B5/4826 , G11B5/4833
摘要： In a dynamic electric test, a head slider is to be fixed positively to a suspension and to be removable easily from the suspension in accordance with the result of the test. In one embodiment of the present invention a head gimbal assembly includes a head slider, a gimbal and a load beam. The head slider is disposed on a gimbal tongue and is held with an urging force of a resilient clamp at a position between the resilient clamp formed on the leading side of the head slider and connecting terminals formed on the opposite side thereof.
摘要翻译：在动态电气测试中，磁头滑块将被正确地固定到悬架上，并且根据测试结果容易地从悬架上移除。在本发明的一个实施例中，头部万向架组件包括头部滑块，万向节和负载梁。磁头滑动器设置在万向节舌上，并且在形成在磁头滑动器的前侧上的弹性夹具和形成在其相对侧上的连接端子之间的位置处被保持有弹性夹具的作用力。

44. 发明申请

US20100046121A1 CPP MAGNETORESISTIVE HEAD 有权
标题翻译： CPP磁电头
公开(公告)号：US20100046121A1
公开(公告)日：2010-02-25
申请号：US12536255
申请日：2009-08-05
申请人： Masahiro Osugi , Takayoshi Ohtsu , Shigeo Fujita , Katsuro Watanabe , Koji Kataoka
发明人： Masahiro Osugi , Takayoshi Ohtsu , Shigeo Fujita , Katsuro Watanabe , Koji Kataoka
IPC分类号： G11B5/127
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3912 , G11B2005/3996
摘要： According to one embodiment, a CPP magnetoresistive head includes a magnetoresistive film comprising a free layer above a non-magnetic intermediate layer and a fixed layer below the non-magnetic intermediate layer, wherein the magnetoresistive film is between a lower magnetic shield layer and an upper magnetic shield layer. The CPP magnetoresistive head also includes a domain control film on each side of the magnetoresistive film, wherein a sense current flows through the magnetoresistive film between the upper magnetic shield layer and the lower magnetic shield layer. The CPP magnetoresistive head also includes a high heat conductivity layer, and a heat dissipation layer having a high heat conductivity and a low linear expansion coefficient, the heat dissipation layer being disposed at the back in a device height direction of the magnetoresistive film and on each side of the domain control film.
摘要翻译：根据一个实施例，CPP磁阻磁头包括磁阻膜，该磁阻膜包括非磁性中间层上方的自由层和非磁性中间层下方的固定层，其中磁阻膜位于下部磁屏蔽层和上部磁屏蔽层之间磁屏蔽层。 CPP磁阻头还包括在磁阻膜的每一侧的畴控制膜，其中感测电流流过上磁屏蔽层和下磁屏蔽层之间的磁阻膜。 CPP磁阻头还包括高导热层和具有高导热性和低线性膨胀系数的散热层，散热层设置在磁阻膜的器件高度方向的背面，并且在每个侧面的域控制膜。

45. 发明授权

US07652848B2 Suspension for magnetic head slider characteristic test 有权
标题翻译：悬架用于磁头滑块特性测试
公开(公告)号：US07652848B2
公开(公告)日：2010-01-26
申请号：US11698367
申请日：2007-01-25
申请人： Shinobu Hagiya , Haruhide Takahashi , Kousaku Wakatsuki , Takayoshi Ohtsu
发明人： Shinobu Hagiya , Haruhide Takahashi , Kousaku Wakatsuki , Takayoshi Ohtsu
IPC分类号： G11B5/48
CPC分类号： G11B5/4826 , G11B5/455
摘要： Embodiments in accordance with the present invention provide a magnetic head slider to be easily mounted on or dismounted from a suspension and can hold a magnetic head slider so as not to be removed due to a shock resultant from handling during a characteristic test and a manufacturing process. A load beam is formed with protruding portions on both sides. A flexure includes a frame portion, a plate portion, a spring portion, an E-shaped pressing portion, and a probe portion. The plate portion extends from a guide portion of the frame portion. The probe portion may be formed by partially cutting out the frame portion. A limiter is formed on both sides of the plate portion. The limiter protrudes from the rear of the load beam and has a hook-shaped tip. The hook-shaped portion of the limiter engages with the protruding portion 6 of the load beam to limit excess vertical movement of the flexure. A gap may be formed between the limiter and the protruding portion.
摘要翻译：根据本发明的实施例提供了一种磁头滑动器，其可以容易地安装在悬架上或从悬架上拆卸，并且可以容纳磁头滑动器，以便在特性测试和制造过程中由于处理造成的冲击而不被移除。负载梁在两侧形成有突出部分。挠曲件包括框架部分，板部分，弹簧部分，E形按压部分和探针部分。板部从框架部的引导部延伸。可以通过部分地切割框架部分来形成探针部分。限制器形成在板部分的两侧。限位器从负载梁的后部突出并具有钩形尖端。限位器的钩状部分与负载梁的突出部分6接合以限制挠曲件的多余的垂直运动。可以在限制器和突出部之间形成间隙。

46. 发明申请

US20080043376A1 Magnetic resistive head and magnetic recording apparatus 审中-公开
标题翻译：磁阻头和磁记录装置
公开(公告)号：US20080043376A1
公开(公告)日：2008-02-21
申请号：US11973152
申请日：2007-10-05
申请人： Takayoshi Ohtsu , Satoshi Shigematsu , Kouji Nishioka , Takao Imagawa , Kouji Kataoka , Masatoshi Arasawa , Norifumi Miyamoto
发明人： Takayoshi Ohtsu , Satoshi Shigematsu , Kouji Nishioka , Takao Imagawa , Kouji Kataoka , Masatoshi Arasawa , Norifumi Miyamoto
IPC分类号： G11B5/33
CPC分类号： G11B5/3967 , B82Y10/00 , B82Y25/00 , G11B5/012 , G11B5/3116 , G11B5/3932 , G11B2005/3996
摘要： A magnetoresistive head comprises a free magnetic layer that has first and second free magnetic films sandwiching a non-magnetic intermediate film therebetween, the respective magnetizing directions of the first and the second free magnetic films are antiparallel. The length of the free magnetic layer in the direction of the track width is 200 nm or less, and a difference between a product of saturation magnetic flux density and a film thickness of the first free magnetic film, and that of the second free magnetic film is within a range from 1 to 3 nmT. By this structure, the variation of output and the variation of asymmetry is greatly decreased at a track width of 200 nm or less.
摘要翻译：磁阻头包括具有夹在其间的非磁性中间膜的第一和第二自由磁性膜的自由磁性层，第一和第二自由磁性膜的各自的磁化方向是反平行的。自由磁性层在磁道宽度方向上的长度为200nm以下，饱和磁通密度与第一自由磁性膜的膜厚的乘积与第二自由磁性膜的膜厚之差在1〜3nmT的范围内。通过这种结构，在200nm或更小的轨道宽度处，输出的变化和不对称性的变化大大降低。

47. 发明申请

US20070002494A1 Suspension for hard disk drive which enables easy dynamic electric testing 有权
标题翻译：用于硬盘驱动器的悬挂，可实现轻松的动态电气测试
公开(公告)号：US20070002494A1
公开(公告)日：2007-01-04
申请号：US11480040
申请日：2006-06-30
申请人： Haruhide Takahashi , Kousaku Wakatsuki , Shinobu Hagiya , Takayoshi Ohtsu , Kouji Kataoka , Yohtaroh Ichimura
发明人： Haruhide Takahashi , Kousaku Wakatsuki , Shinobu Hagiya , Takayoshi Ohtsu , Kouji Kataoka , Yohtaroh Ichimura
IPC分类号： G11B5/60
CPC分类号： G11B5/4826 , G11B5/4833
摘要： In a dynamic electric test, a head slider is to be fixed positively to a suspension and to be removable easily from the suspension in accordance with the result of the test. In one embodiment of the present invention a head gimbal assembly includes a head slider, a gimbal and a load beam. The head slider is disposed on a gimbal tongue and is held with an urging force of a resilient clamp at a position between the resilient clamp formed on the leading side of the head slider and connecting terminals formed on the opposite side thereof.
摘要翻译：在动态电气测试中，磁头滑块将被正确地固定到悬架上，并且根据测试结果容易地从悬架上移除。在本发明的一个实施例中，头部万向架组件包括头部滑块，万向节和负载梁。磁头滑动器设置在万向节舌上，并且在形成在磁头滑动器的前侧上的弹性夹具和形成在其相对侧上的连接端子之间的位置处被保持有弹性夹具的作用力。

48. 发明申请

US20060092576A1 Magnetic head for high speed data transfer 审中-公开
标题翻译：用于高速数据传输的磁头
公开(公告)号：US20060092576A1
公开(公告)日：2006-05-04
申请号：US11259431
申请日：2005-10-25
申请人： Takayoshi Ohtsu
发明人： Takayoshi Ohtsu
IPC分类号： G11B5/33 , G11B5/127
CPC分类号： G11B5/1278
摘要： A read head having superior high frequency response characteristics is needed to achieve high-speed data transfer. Further, in perpendicular magnetic recording, since the read signal has a rectangular waveform, the harmonic components must be properly reproduced, requiring a read head having further improved high frequency read characteristics. A feature of the present invention is to provide a read head with superior high-speed response characteristics which can be applied to a magnetic disk drive to achieve high density and high-speed data transfer. In specific embodiments, the present invention provides a magnetic head having a capacitance of about 2 pF or less. It also provides a magnetic head in which the overlapping area of the upper and lower magnetic shields is about 5300 μm2 or less.
摘要翻译：需要具有优异的高频响应特性的读头来实现高速数据传输。此外，在垂直磁记录中，由于读取信号具有矩形波形，所以必须适当地再现谐波分量，从而需要具有进一步提高的高频读取特性的读取头。本发明的一个特征是提供一种具有优异的高速响应特性的读取头，其可应用于磁盘驱动器以实现高密度和高速数据传输。在具体实施例中，本发明提供一种具有约2pF或更小的电容的磁头。它还提供了一种磁头，其中上下磁屏蔽的重叠面积为约5300μm2以下。

49. 发明授权

US06704177B2 Magnetic head with magnetic domain control structure having antiferromagnetic layer and magnetic layer 失效
标题翻译：具有磁畴控制结构的磁头具有反铁磁层和磁性层
公开(公告)号：US06704177B2
公开(公告)日：2004-03-09
申请号：US10075241
申请日：2002-02-15
申请人： Akira Morinaga , Takayoshi Ohtsu
发明人： Akira Morinaga , Takayoshi Ohtsu
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3909 , G11B2005/3996
摘要： A magneto-resistive effect head includes a magnetic domain control construction using both of an antiferromagnetic film and a magnetic domain control layer made of a magnet layer. The head is constructed by: an antiferromagnetic layer; a pinned layer which is formed on the antiferromagnetic layer and whose magnetizing direction has been fixed; a spacer formed on the pinned layer; a free layer formed on the spacer; magnetic domain control layers having antiferromagnetic films and magnet layers for performing a magnetic domain control of the free layer; and a pair of lead layers for supplying a current to a stack of the antiferromagnetic layer, pinned layer, spacer, and free layer. Thus, even for realization of a narrow track, a magneto-resistive effect head having large sensitivity and small side reading can be realized.
摘要翻译：磁阻效应头包括使用由磁铁层制成的反铁磁膜和磁畴控制层两者的磁畴控制结构。头部由以下构成：反铁磁层; 形成在反铁磁层上并且其磁化方向已被固定的钉扎层; 形成在被钉扎层上的间隔物; 形成在间隔物上的自由层; 具有反铁磁膜的磁畴控制层和用于对自由层进行磁畴控制的磁体层; 以及用于向反铁磁性层，钉扎层，隔离层和自由层的堆叠提供电流的一对引线层。因此，即使实现窄轨迹，也可以实现具有高灵敏度和小侧读取的磁阻效应头。

50. 发明授权

US06700737B1 Recording and reproducing separation type magnetic head having thin part in upper core or magnetic film and magnetic storage apparatus using the same 失效
标题翻译：记录和再现在上芯或磁膜中具有薄部分的分离型磁头和使用其的磁存储装置
公开(公告)号：US06700737B1
公开(公告)日：2004-03-02
申请号：US09365839
申请日：1999-08-03
申请人： Jun Ohno , Takayoshi Ohtsu
发明人： Jun Ohno , Takayoshi Ohtsu
IPC分类号： G11B5187
CPC分类号： G11B5/012 , G11B5/3116 , G11B5/313 , G11B5/332 , G11B5/3967
摘要： A recording and reproducing separation type magnetic head has a recording head with an upper core and a lower core that writes information on a magnetic disk and a reproducing head with an upper magnetic film and a lower magnetic film, as sealed layers, that reads the information from the magnetic disk. A thickness of the upper part of the upper core is less than a thickness of the tip minute of the upper core. The magnetic head has excellent overwriting performance and achieves high speed transfer.
摘要翻译：记录和再现分离型磁头具有记录头，其具有上磁芯和下磁芯，其将信息写入磁盘和具有上磁膜和下磁膜的再现磁头作为密封层，其读取信息从磁盘。上芯的上部的厚度小于上芯的末端分度的厚度。磁头具有优异的重写性能，实现高速传输。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式