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11. 发明授权

US07485378B2 Magnetic thin film head 失效
标题翻译：磁性薄膜头
公开(公告)号：US07485378B2
公开(公告)日：2009-02-03
申请号：US11084683
申请日：2005-03-18
申请人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Hiromi Shiina
发明人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Hiromi Shiina
IPC分类号： G11B5/127
CPC分类号： B32B15/01 , G11B5/21 , Y10T428/115 , Y10T428/1186
摘要： A magnetic film capable of generating strong magnetic fields even in a high frequency region, a manufacturing method therefore and a thin film magnetic head capable of recording even in a high frequency region are provided. In one embodiment, the magnetic film is manufactured by using a 88FeNi film of 200 nm thick having minimum Hk of 0.32 Oe (25.6 A/m) as a main magnetic film and selecting a 20 wt % FeNi film of a similar FeNi alloy plating film having low Hk and low Hc as an interlayer material. A stacked film comprising (88FeNi/20FeNi)×10 layers is prepared so that the total thickness of the main magnetic film is 2 μm. The 88FeNi film is prepared by application of a DC current in a 88FeNi plating bath, and the 20FeNi film is prepared by pulse plating successively in the same bath.
摘要翻译：提供了即使在高频区域也能够产生强磁场的磁性膜，因此制造方法以及即使在高频区域也能够进行记录的薄膜磁头。在一个实施例中，通过使用具有最小Hk为0.32Oe（25.6A / m）的200nm厚度的88FeNi膜作为主要磁性膜并选择类似的FeNi合金镀膜的20wt％FeNi膜来制造磁性膜具有低Hk和低Hc作为中间层材料。制备包含（88FeNi / 20FeNi）×10层的层叠膜，使得主磁性膜的总厚度为2μm。通过在88FeNi电镀浴中施加DC电流制备88FeNi膜，并通过在相同的浴中连续脉冲电镀制备20FeNi膜。

12. 发明授权

US07262940B2 Separate read/write magnetic head 失效
标题翻译：独立的读/写磁头
公开(公告)号：US07262940B2
公开(公告)日：2007-08-28
申请号：US10778909
申请日：2004-02-12
申请人： Tadayuki Iwakura , Youji Maruyama
发明人： Tadayuki Iwakura , Youji Maruyama
IPC分类号： G11B5/39
CPC分类号： G11B5/3912
摘要： A separate read/write magnetic head of the present invention includes a magnetoresistive head 11 having a magnetoresistive film 25 disposed between a lower shield 23 and an upper shield 28, both of which are formed on a substrate 21, and a pair of electrodes 26 electrically connected to the magnetoresistive film 25; and an inductive magnetic thin film head 12 having a coil 33 between a lower pole piece 31 and an upper pole piece 35, both of which are disposed on the upper shield 28 of the magnetoresistive head 11 with a separation film 29 being sandwiched therebetween, and through a magnetic gap film 32 and an interlayer insulating film 34. Reduced protrusion of the read head element toward the air bearing surface due to heat deformation caused by changes in ambient temperature can be achieved by configuring the lower shield 23 and the upper shield 28 so that the sum of their thicknesses is 0.4 μm or more and less than 3.4 μm.
摘要翻译：本发明的单独读/写磁头包括磁阻头11，其具有设置在下屏蔽件23和上屏蔽件28之间的磁阻膜25，两者都形成在基板21上，并且一对电极26电连接到磁阻膜25; 以及具有在下极片31和上极片35之间的线圈33的感应磁性薄膜头12，两者均设置在磁阻头11的上屏蔽28上，分隔膜29夹在其间;以及通过磁隙膜32和层间绝缘膜34。可以通过将下屏蔽件23和上屏蔽件28配置为使得它们的厚度之和为0.4μm或更大而减小，由于由环境温度变化引起的热变形而使读头元件向空气轴承表面的突出减小超过3.4个妈妈。

13. 发明授权

US07589937B2 Thin film magnetic head with high Fe alloy plating film and manufacturing method thereof 失效
标题翻译：具有高Fe合金镀膜的薄膜磁头及其制造方法
公开(公告)号：US07589937B2
公开(公告)日：2009-09-15
申请号：US10894723
申请日：2004-07-19
申请人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Noriyuki Saiki , Hiromi Shiina
发明人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Noriyuki Saiki , Hiromi Shiina
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/147 , Y10T29/49032
摘要： Embodiments of the invention provide a lustrous and uniform plating film having high-performance magnetic characteristics and a thin film magnetic head usable in a high frequency recording band by using the plating film of the invention at a magnetic pole portion. Plating is performed in a plating bath at a low pH of about 1.5 to 2.3. The accuracy of pH control is improved. A magnetic film with the addition of a high resistive metal such as Cr or Mo is formed under the plating condition. Further, the magnetic characteristic is improved by applying a heat treatment to the plating film in a magnetic field, according to specific embodiments of the present invention. A plating film with brightness and uniformity having high saturation magnetic flux density can be formed by reducing the hysteresis loss and the eddy current loss as the magnetic characteristics by the above techniques.
摘要翻译：本发明的实施例通过使用本发明的镀膜在磁极部分提供具有高性能磁特性的光泽均匀的镀膜和可用于高频记录带的薄膜磁头。电镀在约1.5至2.3的低pH值的电镀浴中进行。 pH控制的准确性得到提高。在电镀条件下形成具有添加诸如Cr或Mo的高电阻金属的磁性膜。此外，根据本发明的具体实施方式，通过在磁场中对镀膜进行热处理来提高磁特性。通过上述技术，可以通过减小作为磁特性的磁滞损耗和涡流损耗来形成具有高饱和磁通密度的亮度和均匀性的电镀膜。

14. 发明授权

US5994893A Driving apparatus for stepping motor type instrument 失效
标题翻译：步进电机式仪表驱动装置
公开(公告)号：US5994893A
公开(公告)日：1999-11-30
申请号：US29394
申请日：1998-02-27
申请人： Youji Maruyama , Kouichi Sato
发明人： Youji Maruyama , Kouichi Sato
IPC分类号： G01P1/08 , G01D3/02 , G01D13/22 , G01R5/16 , G01R7/06 , H02P8/14 , H02P8/38 , G01P3/42 , G01P3/00
CPC分类号： G01R7/06 , H02P8/14 , H02P8/38
摘要： A stepping motor type instrument 6 has driving circuits 3, 4 for driving a stepping motor based on a digital signal corresponding to a measurement quantity and a needle 9 fixed to a driving shaft end of this stepping motor indicates the measurement quantity by pointing out a graduation 8 on a character panel 7 corresponding to the measurement quantity. Further this stepping motor type instrument contains processing means 3 in which a digital signal corresponding to the measurement quantity is input and converted to an indication angle data at a predetermined frequency, and delay means 4 in which a difference between continuous indication angle data front and back output by the processing means 3 at the conversion frequency is obtained and if the difference is larger than a predetermined value, the signal is converted so that its change is less than the predetermined value and continuous indication angle data is output, thereby preventing a step-out and carrying out operation securely following a change in the measurement quantity.
摘要翻译： PCT No.PCT / JP97 / 02126 Sec。 371日期1998年2月27日 102（e）日期1998年2月27日PCT提交1997年6月19日PCT公布。公开号WO98 / 00684 日期1998年1月8日步进电动机型仪器6具有驱动电路3,4，用于基于与测量量对应的数字信号驱动步进电机，并且固定到该步进电机的驱动轴端的针9表示测量量通过在对应于测量量的字符面板7上指出刻度8。此外，该步进电动机型仪器包括处理装置3，其中与测量量对应的数字信号被输入并转换成预定频率的指示角度数据;以及延迟装置4，其中前后连续指示角数据之间的差获得处理装置3以转换频率的输出，并且如果差大于预定值，则转换信号使其变化小于预定值，并输出连续指示角数据，随着测量量的变化，安全地执行操作。

15. 发明授权

US5615192A Information recording and reproducing method and apparatus 失效
标题翻译：信息记录和再现方法和装置
公开(公告)号：US5615192A
公开(公告)日：1997-03-25
申请号：US319796
申请日：1994-10-07
申请人： Atsushi Kikukawa , Sumio Hosaka , Youji Maruyama , Toshimichi Shintani , Takeshi Shimano
发明人： Atsushi Kikukawa , Sumio Hosaka , Youji Maruyama , Toshimichi Shintani , Takeshi Shimano
IPC分类号： G11B5/00 , G11B5/02 , G11B7/12 , G11B7/135 , G11B7/14 , G11B9/00 , G11B11/00 , G11B11/105 , G11B13/00 , G11B20/06 , G11B20/10 , G11B27/30 , G11B7/00
CPC分类号： B82Y10/00 , G11B11/002 , G11B11/007 , G11B11/10536 , G11B11/10545 , G11B11/10576 , G11B13/00 , G11B20/06 , G11B20/10 , G11B27/3027 , G11B5/00 , G11B5/02 , G11B7/12 , G11B7/1384 , G11B7/14 , G11B9/14 , G11B20/14 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021 , Y10S977/881 , Y10S977/932
摘要： A recording-reproducing apparatus can remarkably relax the reproduction tracking accuracy by use of a head wider than the track width. The carrier signal frequency assigned to a recording track is designated to a synthesized signal generator. In compliance with this designation, the synthesized signal generator generates a signal of the designated frequency. This carrier signal is amplitude-modulated by the baseband signal to be recorded in a mixer. The unrequired frequency components are removed from this modulation signal by a bandpass filter, and the resulting signal is recorded in a recording medium by a head. The recording medium and the head are in relative motion. In read mode, a track is specified by the carrier signal.
摘要翻译：记录再现装置可以通过使用比轨道宽度更宽的头部显着地放松再现跟踪精度。分配给记录磁道的载波信号频率被指定给合成信号发生器。根据该指定，合成信号发生器产生指定频率的信号。该载波信号由基带信号进行幅度调制，以记录在混频器中。通过带通滤波器从该调制信号中去除非需要的频率分量，并将所得到的信号通过磁头记录在记录介质中。记录介质和磁头相对运动。在读取模式下，通过载波信号指定轨道。

16. 发明授权

US07881012B2 Magnetic head and magnetic disk storage apparatus mounting the head 有权
标题翻译：安装磁头的磁头和磁盘存储装置
公开(公告)号：US07881012B2
公开(公告)日：2011-02-01
申请号：US11707415
申请日：2007-02-15
申请人： Masafumi Mochizuki , Kimitoshi Etoh , Youji Maruyama , Hiroshi Fukui
发明人： Masafumi Mochizuki , Kimitoshi Etoh , Youji Maruyama , Hiroshi Fukui
IPC分类号： G11B5/17
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/1872 , G11B5/3146
摘要： Embodiments in accordance with the present invention provide a magnetic head in which broadening of the write-field distribution in the track-width direction can be decreased without reducing the write-field intensity. A main pole includes a pole tip having a part which provides the write track-width and a yoke part recessed from the air bearing surface in the element height direction, the pole tip including at least two magnetic films having different track-width directions, and the throat height at the trailing side being made smaller than the throat height at the leading side.
摘要翻译：根据本发明的实施例提供一种磁头，其中可以减小磁道宽度方向上的写入场分布的扩大，而不降低写入场强度。主极包括具有提供写入轨道宽度的部分的磁极尖端和在元件高度方向上从空气轴承表面凹陷的磁轭部分，磁极末端包括具有不同轨道宽度方向的至少两个磁性膜，以及在后侧的喉部高度小于前侧的喉部高度。

17. 发明申请

US20060203385A1 Thin film magnetic head with layer having high saturation magnetic flux density, and magnetic storage apparatus 有权
标题翻译：具有高饱和磁通密度的层的薄膜磁头和磁存储装置
公开(公告)号：US20060203385A1
公开(公告)日：2006-09-14
申请号：US11372835
申请日：2006-03-09
申请人： Kazue Kudo , Gen Oikawa , Youji Maruyama , Hiromi Shiina
发明人： Kazue Kudo , Gen Oikawa , Youji Maruyama , Hiromi Shiina
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , G11B5/21 , G11B5/3109 , H01F10/16 , H01F41/26 , Y10T428/115 , Y10T428/1186
摘要： Embodiments of the invention provide a magnetic film capable of providing a higher saturation magnetic flux density as compared with the conventional one, a process of forming the magnetic film, a thin film magnetic head that makes use of the magnetic film, and a magnetic disk drive having this thin film magnetic head. In one embodiment, a magnetic film contains Co, Ni, and Fe, and its composition is such that 10≦Co≦40 wt %, 0
摘要翻译：本发明的实施例提供了一种能够提供比常规的更高的饱和磁通密度的磁性膜，形成磁性膜的方法，利用磁性膜的薄膜磁头和磁盘驱动器具有这种薄膜磁头。在一个实施方案中，磁性膜含有Co，Ni和Fe，并且其组成使得10 <= Co <= 40wt％，0

18. 发明申请

US20060087766A1 Thin film magnetic head with small track width 审中-公开
标题翻译：薄膜磁头，磁道宽度小
公开(公告)号：US20060087766A1
公开(公告)日：2006-04-27
申请号：US11258458
申请日：2005-10-24
申请人： Kazue Kudo , Youji Maruyama , Tetsuya Okai , Hiromi Shiina
发明人： Kazue Kudo , Youji Maruyama , Tetsuya Okai , Hiromi Shiina
IPC分类号： G11B5/147
CPC分类号： G11B5/147 , G11B5/1871 , G11B5/3163
摘要： In one embodiment, above a read head, a separating layer comprising a nonmagnetic insulating layer is formed. On the separating layer, a lower magnetic yoke is formed. On the lower magnetic yoke, a pedestal magnetic pole is formed at the front end (air bearing surface side). On the pedestal magnetic pole, a lower magnetic pole, a write gap and an upper magnetic pole are formed. The lower magnetic pole widens as the distance from the write gap increases. On the lower magnetic yoke, a conductor coil is formed via an insulating layer. On the upper magnetic pole, an upper magnetic yoke is formed to constitute a write head. The front end of the upper magnetic yoke is recessed from the front end of the upper magnetic pole. The front end portion of the upper magnetic yoke is magnetically connected with the upper magnetic pole whereas the rear end portion is magnetically connected with the lower magnetic yoke.
摘要翻译：在一个实施例中，在读取头之上，形成包括非磁性绝缘层的分离层。在分离层上形成下磁轭。在下磁轭上，在前端（空气支承面侧）形成基座磁极。在基座磁极上形成下磁极，写入间隙和上磁极。随着距离写入间隙的距离增加，下磁极变宽。在下磁轭上，通过绝缘层形成导体线圈。在上磁极上，形成上磁轭构成写磁头。上磁轭的前端从上磁极的前端凹入。上磁轭的前端部与上磁极磁连接，后端部与下磁轭磁连接。

19. 发明申请

US20060087765A1 Magnetic head for perpendicular recording 有权
标题翻译：磁头用于垂直记录
公开(公告)号：US20060087765A1
公开(公告)日：2006-04-27
申请号：US11258468
申请日：2005-10-24
申请人： Tadayuki Iwakura , Youji Maruyama , Masafumi Mochizuki , Ichiro Ohdake
发明人： Tadayuki Iwakura , Youji Maruyama , Masafumi Mochizuki , Ichiro Ohdake
IPC分类号： G11B5/127
CPC分类号： G11B5/3136 , G11B5/1278 , G11B5/3106
摘要： Embodiments of the invention provide a perpendicular recording magnetic head capable of reducing leakage magnetic fields from the soft magnetic films on the air bearing surface side and reducing the protrusion of the soft magnetic films in the direction of the air bearing surface side due to thermal deformation of the soft magnetic films. In one embodiment, the write functional section includes a coil conductor, second soft magnetic film pattern and first soft magnetic film pattern that cover the coil conductor from top and bottom and are magnetically coupled to each other, and a main magnetic pole piece determining a track width. The read functional section includes a reading element sandwiched between two magnetic shield films. A pedestal magnetic pole pattern is formed at the frontal end position of the first soft magnetic film pattern.
摘要翻译：本发明的实施例提供一种垂直记录磁头，其能够减少来自空气轴承面侧的软磁性膜的泄漏磁场，并且由于热变形而减小软磁性膜在空气轴承面侧的方向上的突出软磁膜。在一个实施例中，写功能部分包括线圈导体，第二软磁膜图案和第一软磁膜图案，其从顶部和底部覆盖线圈导体并且彼此磁耦合;以及主磁极片，其确定轨道宽度。读取功能部分包括夹在两个磁屏蔽膜之间的读取元件。在第一软磁膜图案的前端位置处形成基座磁极图案。

20. 发明授权

US4415262A Photomask 失效
标题翻译：光掩模
公开(公告)号：US4415262A
公开(公告)日：1983-11-15
申请号：US340215
申请日：1982-01-18
申请人： Naoki Koyama , Youji Maruyama , Hiroshi Umezaki , Norikazu Tsumita , Yutaka Sugita
发明人： Naoki Koyama , Youji Maruyama , Hiroshi Umezaki , Norikazu Tsumita , Yutaka Sugita
IPC分类号： G03F1/00 , G03F1/54 , H01L21/027 , H01L21/30 , G03B27/28
CPC分类号： H01L21/30 , G03F1/50
摘要： A photomask is disclosed which is suitable for use in the one-mask method capable of forming a plurality of patterns with one exposure, and in which an opaque pattern having a predetermined form and a semi-transparent pattern having another predetermined form are formed on a transparent substrate, and the semi-transparent pattern is formed of an opaque film having a large number of fine through holes.
摘要翻译：公开了一种适合用于能够以一次曝光形成多个图案的单掩模方法的光掩模，其中具有预定形式的不透明图案和具有另一预定形式的半透明图案形成在透明基板，半透明图案由具有大量细通孔的不透明膜形成。

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