公开(公告)号：US20080112299A1

公开(公告)日：2008-05-15

申请号：US11985123

申请日：2007-11-13

申请人： Toshihiko Shimizu ,  Keiko Watanabe

发明人： Toshihiko Shimizu ,  Keiko Watanabe

IPC分类号： G11B33/02

CPC分类号： G11B33/1466 ,  G11B33/1433

摘要： Embodiments of present invention help to realize a highly reliable magnetic disk drive by preventing a positional displacement between a magnetic head and a target track by decreasing restricting forces that a cover exerts on a base when the temperature is increased. According to one embodiment, a base is formed by aluminum die casting, has a concave, rectangular parallelepiped shape, and is formed with step portions at the four corners. A cover is a flat plate of stainless steel or iron. Four corner portions of the cover are bent to form step portions. The cover is fixed to the base at the four corners with bolts at two side positions (six positions in total). A gasket is inserted at that time to enhance the sealing performance. Since the gasket is a member like a rubber packing, it is necessary to press the gasket with the flat portions of the base and the cover To this end, the gasket is placed on top of the base step portions and the connection between the cover and the base at the four corners is made under the base step portions.

摘要翻译： 本发明的实施例有助于通过在温度升高时通过减小盖施加在基座上的限制力来防止磁头和目标轨道之间的位置偏移来实现高度可靠的磁盘驱动。 根据一个实施例，基座由铝压铸形成，具有凹形的长方体形状，并且在四个角部形成有台阶部分。 盖是不锈钢或铁的平板。 盖的四个角部弯曲以形成台阶部。 盖子通过两个侧面位置的螺栓（总共六个位置）固定在四个角落的基座上。 此时插入垫圈以增强密封性能。 由于垫圈是像橡胶垫片的构件，因此需要用基座和盖子的平坦部分按压垫圈。为此，垫圈被放置在基座台阶部分的顶部，盖子和 在四个角落处的基部形成在基底台阶部下方。

公开(公告)号：US07215203B2

公开(公告)日：2007-05-08

申请号：US11414337

申请日：2006-05-01

申请人： Yoshikuni Matsunaga ,  Toshihiko Shimizu ,  Tomio Furuya ,  Nobuhiro Matsudaira ,  Koichi Matsushita

发明人： Yoshikuni Matsunaga ,  Toshihiko Shimizu ,  Tomio Furuya ,  Nobuhiro Matsudaira ,  Koichi Matsushita

IPC分类号： H03G3/30

CPC分类号： H03F1/0261 ,  H03F2200/465 ,  H03G1/0017 ,  H03G3/3042 ,  H03G3/3047

摘要： A multistage high frequency power amplifier-circuit device has a plurality of semiconductor amplification elements connected in a cascade. The circuit device is provided with a bias control circuit used to control the bias voltage or bias current of the output semiconductor amplification element in each stage so as to reduce the variation of the output power with respect to the power control signal voltage in an area around the threshold voltage of the semiconductor amplification elements. This realizes a high frequency power amplifier circuit device provided with excellent controllability of the output power and high efficiency at the time of low power output realized with use of such a control voltage as a power control signal.

摘要翻译： 多级高频功率放大器电路装置具有串联连接的多个半导体放大元件。 电路装置设置有偏置控制电路，用于控制各级输出半导体放大元件的偏置电压或偏置电流，以便减少相对于周围区域内的功率控制信号电压的输出功率的变化 半导体放大元件的阈值电压。 这实现了在使用诸如功率控制信号的这种控制电压实现的低功率输出时，输出功率具有优异的可控制性和高效率的高频功率放大器电路器件。

公开(公告)号：US20070002497A1

公开(公告)日：2007-01-04

申请号：US11516608

申请日：2006-09-07

申请人： Toshihiko Shimizu ,  Tetsuya Hamaguchi ,  Toshihiro Arisaka ,  Hiromitsu Masuda ,  Gentaro Nakamura ,  Takenori Atsumi

发明人： Toshihiko Shimizu ,  Tetsuya Hamaguchi ,  Toshihiro Arisaka ,  Hiromitsu Masuda ,  Gentaro Nakamura ,  Takenori Atsumi

IPC分类号： G11B5/55

CPC分类号： G11B5/4833 ,  G11B5/4813 ,  G11B5/5526 ,  G11B5/5582

摘要： A carriage includes a slider on which a magnetic head for reading/writing information from/to a disk is mounted, a suspension for carrying the slider and for applying a predetermined load to the slider, a carriage arm to which the suspension is attached, and a body section to which the carriage arm is connected. The carriage arm includes a suspension fixing portion, as arm arranged substantially in parallel with a disk surface, and a restricting member which is a thin-plate-like member having a surface which is opposite to the plane of arm which is parallel to the disk surface. The restricting member and the arm are coupled via a viscoelastic body.

摘要翻译： 一种滑架，其上安装有用于从/向盘读取/写入信息的磁头的滑块，用于承载滑块并用于向滑块施加预定负载的悬架，附接有悬架的滑架臂，以及 连接有托架臂的主体部分。 托架臂包括悬挂固定部分，作为布置成基本上与盘表面平行的臂，以及限制构件，其是具有与臂的平面相反的表面的薄板状构件，该平面平行于盘 表面。 限制构件和臂通过粘弹性体联接。

公开(公告)号：US07116175B2

公开(公告)日：2006-10-03

申请号：US10890281

申请日：2004-07-14

申请人： Toshihiko Shimizu ,  Yoshikuni Matsunaga ,  Yuri Kusakari

发明人： Toshihiko Shimizu ,  Yoshikuni Matsunaga ,  Yuri Kusakari

IPC分类号： H03F3/14

CPC分类号： H03F3/195 ,  H01L23/66 ,  H01L24/48 ,  H01L24/49 ,  H01L2224/32225 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/49171 ,  H01L2924/00014 ,  H01L2924/01079 ,  H01L2924/1305 ,  H01L2924/13091 ,  H01L2924/14 ,  H01L2924/15153 ,  H01L2924/1517 ,  H01L2924/19041 ,  H01L2924/19105 ,  H01L2924/30107 ,  H01L2924/3011 ,  H01L2924/3025 ,  H03F3/68 ,  H03F2200/111 ,  H03F2200/451 ,  H01L2924/00 ,  H01L2224/45099 ,  H01L2224/45015 ,  H01L2924/207

摘要： Power amplifier circuits which constitute an RF power module used for a digital device capable of handling high frequency signals in two frequency bands are disposed over the same IC chip. The power amplifier circuits are disposed around the IC chip, and a secondary circuit is disposed between the power amplifier circuits. Thus, the power amplifier circuits are provided within the same IC chip to enable a size reduction. Further, the distance between the power amplifier circuits is ensured even if the power amplifier circuits are provided within the same IC chip. It is therefore possible to suppress the coupling between the power amplifier circuits and restrain crosstalk between the power amplifier circuits.

公开(公告)号：US07031118B2

公开(公告)日：2006-04-18

申请号：US11099659

申请日：2005-04-06

申请人： Toshihiko Shimizu ,  Tetsuya Hamaguchi ,  Toshihiro Arisaka ,  Hiromitsu Masuda ,  Gentaro Nakamura ,  Takenori Atsumi

发明人： Toshihiko Shimizu ,  Tetsuya Hamaguchi ,  Toshihiro Arisaka ,  Hiromitsu Masuda ,  Gentaro Nakamura ,  Takenori Atsumi

IPC分类号： G11B5/55

CPC分类号： G11B5/4833 ,  G11B5/4813 ,  G11B5/5526 ,  G11B5/5582

摘要： A carriage arm assembly for swingably supporting a magnetic head which includes a slider, a suspension carrying the slider, a carriage arm to which the suspension is attached, and a body section. The carriage arm extends from the body section and includes first and second arm members extending substantially in parallel with a swinging plane of the carriage arm, and a fixing portion provided at a distal end of the carriage arm for mounting the suspension thereon. Each of the first and second arm members have narrow sections in a distal end area and a base end area thereof, wherein a width of the narrow sections in a swinging direction is smaller than a width of an intermediate area of the first and second arm members.

摘要翻译： 一种用于可摆动地支撑磁头的滑架臂组件，其包括滑块，承载滑块的悬架，悬架附接到的滑架臂和主体部分。 托架臂从主体部分延伸并且包括基本上平行于托架臂的摆动平面延伸的第一和第二臂构件，以及设置在托架臂的远端处的用于将悬架安装在其上的固定部。 第一和第二臂构件中的每一个在远端区域和基端区域中具有窄部分，其中，狭窄部分在摆动方向上的宽度小于第一和第二臂构件的中间区域的宽度 。

公开(公告)号：US20050225895A1

公开(公告)日：2005-10-13

申请号：US11104977

申请日：2005-04-12

申请人： Yasutaka Nishida ,  Ikuya Tagawa ,  Toshihiko Shimizu

发明人： Yasutaka Nishida ,  Ikuya Tagawa ,  Toshihiko Shimizu

IPC分类号： G11B33/14 ,  G11B5/11 ,  G11B17/00 ,  G11B23/00 ,  G11B25/04 ,  G11B33/00 ,  G11B33/12

CPC分类号： G11B23/0042

摘要： Embodiments of the invention efficiently improve the stray field robustness without changing the size or weight of the drive on a large scale. Because a stray field concentrates on a magnetic field element, a symptom in which already recorded data is erased is prevented. According to one embodiment, in a magnetic recording system that uses a perpendicular recording medium having a soft magnetic under layer, a soft magnetic shield is provided on an upper part and a side of a slider on which a magnetic head is mounted, and a distance C between the shield and the medium is made smaller than a distance A or B between the shield and the slider.

摘要翻译： 本发明的实施例在不改变驱动器的尺寸或重量的情况下有效地提高了杂散场稳健性。 由于杂散场集中在磁场元件上，因此防止已经记录的数据被擦除的症状。 根据一个实施例，在使用具有软磁下层的垂直记录介质的磁记录系统中，在安装有磁头的滑块的上部和侧面上设置有软磁屏蔽，并且距离 屏蔽和介质之间的距离C小于屏蔽和滑块之间的距离A或B.

公开(公告)号：US20050180056A1

公开(公告)日：2005-08-18

申请号：US11099659

申请日：2005-04-06

申请人： Toshihiko Shimizu ,  Tetsuya Hamaguchi ,  Toshihiro Arisaka ,  Hiromitsu Masuda ,  Gentaro Nakamura ,  Takenori Atsumi

发明人： Toshihiko Shimizu ,  Tetsuya Hamaguchi ,  Toshihiro Arisaka ,  Hiromitsu Masuda ,  Gentaro Nakamura ,  Takenori Atsumi

IPC分类号： G11B5/55 ,  G11B5/48

CPC分类号： G11B5/4833 ,  G11B5/4813 ,  G11B5/5526 ,  G11B5/5582

摘要： A carriage arm assembly for swingably supporting a magnetic head which includes a slider, a suspension carrying the slider, a carriage arm to which the suspension is attached, and a body section. The body section includes first and second arm members extending substantially in parallel with a swinging plane of the carriage arm, and a fixing portion provided at a distal end of the carriage arm for mounting the suspension thereon. Each of the first and second arm members have narrow sections in a distal end area and a base end area thereof, wherein a width of the narrow sections in a swinging direction is smaller than a width of an intermediate area of the first and second arm members.

摘要翻译： 一种用于可摆动地支撑磁头的滑架臂组件，其包括滑块，承载滑块的悬架，悬架附接到的滑架臂和主体部分。 主体部分包括基本上平行于托架臂的摆动平面延伸的第一和第二臂构件，以及设置在托架臂的远端处的用于将悬架安装在其上的固定部。 第一和第二臂构件中的每一个在远端区域和基端区域中具有窄部分，其中，狭窄部分在摆动方向上的宽度小于第一和第二臂构件的中间区域的宽度 。

公开(公告)号：US20050030107A1

公开(公告)日：2005-02-10

申请号：US10890281

申请日：2004-07-14

申请人： Toshihiko Shimizu ,  Yoshikuni Matsunaga ,  Yuri Kusakari

发明人： Toshihiko Shimizu ,  Yoshikuni Matsunaga ,  Yuri Kusakari

IPC分类号： H01L23/66 ,  H01L27/04 ,  H01L27/06 ,  H01L29/78 ,  H03F3/14 ,  H03F3/189 ,  H03F3/195 ,  H03F3/20

CPC分类号： H03F3/195 ,  H01L23/66 ,  H01L24/48 ,  H01L24/49 ,  H01L2224/32225 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/49171 ,  H01L2924/00014 ,  H01L2924/01079 ,  H01L2924/1305 ,  H01L2924/13091 ,  H01L2924/14 ,  H01L2924/15153 ,  H01L2924/1517 ,  H01L2924/19041 ,  H01L2924/19105 ,  H01L2924/30107 ,  H01L2924/3011 ,  H01L2924/3025 ,  H03F3/68 ,  H03F2200/111 ,  H03F2200/451 ,  H01L2924/00 ,  H01L2224/45099 ,  H01L2224/45015 ,  H01L2924/207

摘要： Power amplifier circuits which constitute an RF power module used for a digital device capable of handling high frequency signals in two frequency bands are disposed over the same IC chip. The power amplifier circuits are disposed around the IC chip, and a secondary circuit is disposed between the power amplifier circuits. Thus, the power amplifier circuits are provided within the same IC chip to enable a size reduction. Further, the distance between the power amplifier circuits is ensured even if the power amplifier circuits are provided within the same IC chip. It is therefore possible to suppress the coupling between the power amplifier circuits and restrain crosstalk between the power amplifier circuits.

摘要翻译： 构成用于能够处理两个频带中的高频信号的数字装置的RF功率模块的功率放大器电路设置在相同的IC芯片上。 功率放大器电路设置在IC芯片周围，并且次级电路设置在功率放大器电路之间。 因此，功率放大器电路设置在同一IC芯片内以实现尺寸减小。 此外，即使功率放大器电路设置在同一IC芯片内，功率放大器电路之间的距离也得到保证。 因此可以抑制功率放大器电路之间的耦合并抑制功率放大器电路之间的串扰。

公开(公告)号：US6157519A

公开(公告)日：2000-12-05

申请号：US628226

申请日：1996-04-04

申请人： Hidekazu Kohira ,  Hiromitsu Tokisue ,  Masaaki Matsumoto ,  Masayuki Suzuki ,  Yoshinori Takeuchi ,  Toshihiko Shimizu

发明人： Hidekazu Kohira ,  Hiromitsu Tokisue ,  Masaaki Matsumoto ,  Masayuki Suzuki ,  Yoshinori Takeuchi ,  Toshihiko Shimizu

IPC分类号： G11B5/60 ,  G11B5/48 ,  G11B21/21

CPC分类号： G11B5/4833

摘要： A magnetic disk unit includes a magnetic disk attached to a spindle so as to be rotatable, a slider having a magnetic head for reading/writing data onto/from the magnetic disk, a suspension for providing the slider with a predetermined load, and an actuator arm for positioning the slider attached to the suspension on the magnetic disk. A first pad including the magnetic head and second pads including no magnetic heads are disposed on an air bearing surface of the slider. During rotation of said magnetic disk, a part of the first pad keeps in contact with the magnetic disk. A load point of the suspension with respect to the slider is positioned between a leading edge of the slider and a position located at a distance equivalent to substantially 0.42 times a whole length of the slider from the leading edge of the slider.

摘要翻译： 磁盘单元包括：可旋转地安装在主轴上的磁盘，具有磁头的滑块，用于将数据读入/写入磁盘，用于为滑块提供预定负载的悬架，以及致动器 用于将附接到磁盘上的悬架的滑块定位的臂。 包括磁头的第一焊盘和不包括磁头的第二焊盘设置在滑块的空气支承表面上。 在所述磁盘旋转期间，第一焊盘的一部分与磁盘保持接触。 悬架相对于滑动件的载荷点位于滑动件的前缘之间，并且位于距离滑块的前缘相当于滑块整个长度的大约0.42倍的距离的位置。

公开(公告)号：US5930082A

公开(公告)日：1999-07-27

申请号：US964231

申请日：1997-11-04

申请人： Toshihiro Arisaka ,  Tetsuya Hamaguchi ,  Keiko Watanabe ,  Toshihiko Shimizu

发明人： Toshihiro Arisaka ,  Tetsuya Hamaguchi ,  Keiko Watanabe ,  Toshihiko Shimizu

IPC分类号： G11B21/21 ,  G11B5/31 ,  G11B5/39 ,  G11B5/48 ,  G11B21/16 ,  G11B21/08

CPC分类号： G11B5/3967 ,  G11B5/3106 ,  G11B5/4826 ,  G11B5/4833 ,  G11B5/484 ,  G11B5/6005

摘要： When a slider slides on a recording medium and a frictional force acts on the slider, an unstable vibration resulting from falling forward of the slider and a local stress are prevented from being generated. An attitude of the slider is stabilized, and the slider is kept in a steady contact with a disc. A rotary support mechanism is constituted by successively connecting one deformable portion, one rigid portion and another deformable portion to an upstream side of another rigid portion with a slider attached thereto in a recording medium movement direction. The another deformable portion is bonded to a support arm. While a predetermined pressing load is given to the slider by a spring portion, an intersection of an extension of a virtual line connecting the one and another deformable portions with the surface of the recording medium is positioned on the upstream side of a sliding point of the slider on the recording medium in the recording medium movement direction.

摘要翻译： 当滑块在记录介质上滑动并且摩擦力作用在滑块上时，防止由于从滑块向前滑动而产生的不稳定振动和局部应力产生。 滑块的姿态稳定，并且滑块保持与盘的稳定接触。 旋转支撑机构通过将一个可变形部分，一个刚性部分和另一个可变形部分连续地连接到另一个刚性部分的上游侧，并在记录介质移动方向上连接有滑块。 另一个可变形部分结合到支撑臂上。 当通过弹簧部分向滑块提供预定的按压负载时，连接一个和另一个可变形部分的虚拟线的延伸部与记录介质的表面的交点位于该滑动点的上游侧 滑块在记录介质的移动方向上。