公开(公告)号：US5166845A

公开(公告)日：1992-11-24

申请号：US611925

申请日：1990-11-09

申请人： Herbert E. Thompson ,  Duane G. Wallace, Jr. ,  Gilbert D. Springer

发明人： Herbert E. Thompson ,  Duane G. Wallace, Jr. ,  Gilbert D. Springer

IPC分类号： G11B5/48

CPC分类号： G11B5/484

摘要： An integrated read/write transducer and flexure support structure is provided for use with rotating magnetic media such as a hard disc drive. The integrated structure includes at least one magnetic pole structure integral with a unitary sheet of flexible magnetic material from which the flexure support is formed. A second magnetic pole is supported on the structure, together with conductive coils, to form an electromagnetic transducer. The integrated structure includes an air-bearing surface mounted for parallel motion with respect to adjacent magnetic media. A pattern of positive-pressure air-bearing rails and negative-pressure recesses provides an aerodynamically stable configuration designed to fly at a height of approximately 5 microinches above the moving magnetic media. Conductors and interconnect pads are provided on the magnetic sheet material substrate. The overall transducer and flexure support, including an external stiffener attached to the backside of the air-bearing surface, has a mass of less than about 15 milligrams.

摘要翻译： 提供集成读/写传感器和挠曲支撑结构，用于与诸如硬盘驱动器之类的旋转磁介质一起使用。 集成结构包括至少一个磁极结构，与形成挠曲支撑件的柔性磁性材料的整体片整体。 第二磁极与导电线圈一起支撑在结构上，以形成电磁换能器。 集成结构包括安装成相对于相邻磁性介质平行运动的空气轴承表面。 正压空气轴承轨道和负压凹槽的图案提供空气动力学稳定的构造，其设计成在移动的磁性介质上方大约5微英寸的高度飞行。 导电体和互连焊盘设置在磁性片材基材上。 整个换能器和挠曲支撑件，包括附接到空气轴承表面的背面的外部加强件，其质量小于约15毫克。

公开(公告)号：US4544421A

公开(公告)日：1985-10-01

申请号：US540388

申请日：1983-10-11

申请人： Gilbert D. Springer

发明人： Gilbert D. Springer

IPC分类号： G03G19/00 ,  G11B5/31 ,  H01F41/14 ,  H01F41/02

CPC分类号： G11B5/3163 ,  G03G19/00 ,  H01F41/14

摘要： A method of field annealing a thin-film electromagnetic read/write head formed of magnetic-field-responsive material having a known Curie temperature. Such a head also includes an electric coil for operatively exciting the head. The method includes the steps of heating the head to a temperature less than the Curie temperature, and then cooling the head while applying electric current to the coil sufficient to induce magnetic flux in the head. The foregoing steps, properly applied, align the magnetic-field-responsive structure, such as magnetic domains in a soft magnetic material, in the direction of operative flux flow in the head.

摘要翻译： 由具有已知居里温度的磁场响应材料形成的薄膜电磁读/写头的场退火方法。 这种头还包括用于可操作地激励头部的电线圈。 该方法包括以下步骤：将头部加热到低于居里温度的温度，然后冷却头部，同时向线圈施加足以引起头部磁通的电流。 适当地应用上述步骤，使磁场响应结构（例如软磁材料中的磁畴）沿头部中的操作流量的方向对准。

公开(公告)号：US6054786A

公开(公告)日：2000-04-25

申请号：US322125

申请日：1999-05-27

申请人： Gilbert D. Springer

发明人： Gilbert D. Springer

IPC分类号： H02K1/02 ,  H02K7/08 ,  H02K19/10 ,  H02K29/12 ,  H02K33/10

CPC分类号： H02K7/086 ,  H02K19/103 ,  H02K29/12 ,  H02K1/02

摘要： An electric motor having a pancake construction stator and rotor poles that are formed by photolithography. The stator and rotor can be formed from an amorphous material, thereby reducing grain boundaries and allowing smaller poles to be etched. The number of poles, never less than three, can be from 20 to 5000 times the stator diameter in centimeters. The extremely thin rotor comprises a flexible disk spaced from the stator by an air cushion maintained in accordance with forces as dictated by Bernoulli's principle. This insures that the spacing between the rotor and stator is automatically adjusted to minimize the distance between the rotor and stator poles and thereby to maximize flux linkage between the poles. By operating the motor in a range that avoids saturation of the poles, a variable torque motor is provided since increased current through the motor windings allows the magnetic field intensity and thus the flux linkage to increase. Furthermore, by varying the frequency at which the stator windings are fired, the speed of rotation of the rotor can be adjusted. Since an amorphous material such as METGLAS displays high coercivity, rapid changes in frequency can be achieved and rapid switching maintained to insure application of power only during periods of maximum torque. The motor further includes detector windings that monitor magnetic coupling between certain stator poles and the rotor poles, magnetic flux being produced in the certain stator poles by means of a high frequency signal winding. The detector windings comprise four windings capable of monitoring the exact position of the rotor poles of a six phase motor, for purposes of controlling the firing of the phases.

摘要翻译： 具有通过光刻形成的薄饼结构定子和转子极的电动机。 定子和转子可以由非晶材料形成，从而减少晶界并允许蚀刻较小的极。 极数不得小于3，可以是定子直径的20至5000倍（厘米）。 极薄的转子包括一个与定子隔开的柔性盘，该柔性盘通过根据伯努利原理所规定的力而保持的气垫。 这确保了转子和定子之间的间隔被自动调整，以使转子和定子极之间的距离最小化，从而最大化磁极间的磁通。 通过在避免极点饱和的范围内操作电动机，提供可变转矩电动机，因为通过电动机绕组的增加的电流允许磁场强度并因此增加磁通量。 此外，通过改变定子绕组被点火的频率，可以调节转子的转速。 由于诸如METGLAS之类的无定形材料显示出高的矫顽力，所以可以实现频率的快速变化并保持快速开关，以确保仅在最大扭矩期间施加功率。 电动机还包括检测器绕组，其检测某些定子极与转子极之间的磁耦合，通过高频信号绕组在某些定子极中产生磁通量。 检测器绕组包括能够监视六相电动机的转子极的精确位置的四个绕组，用于控制相的点火。

公开(公告)号：US4984118A

公开(公告)日：1991-01-08

申请号：US294351

申请日：1989-01-09

申请人： Gilbert D. Springer

发明人： Gilbert D. Springer

IPC分类号： G11B5/187 ,  G11B5/31

CPC分类号： G11B5/3116 ,  G11B5/1871 ,  G11B5/3183

摘要： An electromagnetic read/write head structure for longitudinal/horizontal reading and writing including first and second magnetic pole components which are spaced by a substantially uniform-width, linear, planar gap. Each pole component is characterized by a configuration, measured generally in the plane of the gap, where no portions of the outlines of the pole components, save those portions which actually define the gap, include any stretch extending parallel to the gap.

摘要翻译： 一种用于纵向/水平读取和写入的电磁读/写头结构，包括由基本上均匀宽度的线性平面间隙隔开的第一和第二磁极部件。 每个极组件的特征在于通常在间隙的平面中测量的结构，其中极组件的轮廓的任何部分除了实际上限定间隙的那些部分之外，还包括平行于间隙延伸的任何延伸部。

公开(公告)号：US4503439A

公开(公告)日：1985-03-05

申请号：US472866

申请日：1983-03-08

申请人： Gilbert D. Springer

发明人： Gilbert D. Springer

IPC分类号： B41J2/43 ,  G06K15/14 ,  G11B5/31 ,  H04N1/028 ,  G01D15/12

CPC分类号： H04N1/02805 ,  G06K15/14 ,  G11B5/3103 ,  H04N1/028

摘要： A thin-film, floppy and compliant, electromagnetic, read/write head structure which is adapted to be pressed against a magnetic imaging medium during reading and writing. Individual heads and associated structure are distributed like "bumps" on one face of a support substrate--the opposite face of which is the one designed to contact a medium. Other bumps, some connected functionally with the heads, and others isolated from the heads, are distributed over the same first-mentioned substrate face in a manner whereby they cooperate with the head bumps to minimize preferential point-pressure telegraphing (through the substrate to a recording medium) during compliant pressure-biased contact with such a medium.

摘要翻译： 薄膜，软盘和兼容的电磁读/写头结构，其适于在读写期间被压在磁性成像介质上。 单个头部和相关联的结构在支撑衬底的一个表面上被分布成“隆起”，其相对的面是与介质接触的面。 与头部功能连接的一些凸起和与头部隔离的其它凸块以与头部凸起配合的方式分布在相同的第一提到的基板面上，以使优先点压力通讯（通过基板至 记录介质）在与这种介质的柔性压力偏压接触期间。

公开(公告)号：US4539280A

公开(公告)日：1985-09-03

申请号：US581868

申请日：1984-02-21

申请人： Gilbert D. Springer

发明人： Gilbert D. Springer

IPC分类号： G03G19/00

CPC分类号： G03G19/00

摘要： A method is presented for producing a controlled-distribution, toned magnetic image unit on a planar-like magnetic-image-storage medium having a magnetizable facial expanse using magnetically attractable toner particles having differing sizes. The method includes the steps of creating in such a facial expanse a latent magnetic image formed of magnetic vectors which extend generally parallel with the facial expanse adjacent the perimeter of the image and which extend with increasing angularity with respect to the facial expanse plane with distance inwardly from the perimeter; positioning the image sufficiently close to a mass of such particles to draw the particles magnetically to the latent image; and by said positioning and drawing, selectively capturing particles on the facial expanse extending over the latent image with the sizes of the captured particles generally tending to increase in size with distance inwardly from the perimeter of the image.

摘要翻译： 提出了一种用于在具有可磁化面部膨胀的平面状磁图像存储介质上使用具有不同尺寸的可磁性吸引的调色剂颗粒来生产受控分布调色磁图像单元的方法。 该方法包括以下步骤：在这样的面部中形成由磁性矢量形成的潜像，所述磁矢量大致平行于与图像的周边相邻的面部平面延伸，并且相对于具有向内的距离的面部扩展平面的增加的角度延伸 从周边; 将图像定位成足够靠近这样的颗粒的质量以将磁体磁性地吸引到潜像; 并且通过所述定位和绘图，选择性地捕获在潜像上延伸的面部膨胀物上的颗粒，其中所捕获的颗粒的大小通常倾向于随着从图像的周边向内的距离而增加。

公开(公告)号：US4503440A

公开(公告)日：1985-03-05

申请号：US473361

申请日：1983-03-08

申请人： Gilbert D. Springer

发明人： Gilbert D. Springer

IPC分类号： G11B5/31 ,  B41J2/43 ,  G03G19/00 ,  G01D15/12

CPC分类号： G03G19/00

摘要： Apparatus for producing a magnetic image in a magnetic image storage medium. The apparatus includes a thin-film magnetic web with a pole-defining face and a second thin-film blanket magnetically spaced from the first magnetic web and having a second surface defining a second pole face. Spaced from the pole faces is a diamagnetic spacer which forms a special back gap in the magnetic circuit. An electrical coil sandwiched between the two magnetic materials induces flux in them. The spacer may extend normal to the flux path beyond the effective flux paths otherwise existing in the web and blanket.

摘要翻译： 用于在磁图像存储介质中产生磁图像的装置。 该装置包括具有极限界面的薄膜磁性网和与该第一磁性网磁性间隔开的具有限定第二极面的第二表面的第二薄膜层。 从磁极面间隔的是一个反磁性的间隔物，在磁路中形成一个特殊的后隙。 夹在两个磁性材料之间的电线圈在其中引起通量。 间隔件可以垂直于通量路径延伸超过有效通量路径，否则存在于网和毯中。

公开(公告)号：US4494125A

公开(公告)日：1985-01-15

申请号：US472924

申请日：1983-03-07

申请人： Gilbert D. Springer

发明人： Gilbert D. Springer

IPC分类号： G11B5/31 ,  B41J2/43 ,  G03G19/00 ,  G01D15/12

CPC分类号： G03G19/00

摘要： A magnetic-image read/write head including inner and outer, substantially co-planar, symmetrically arranged pole portions. In one embodiment, the head is disclosed with the inner pole portion presenting a substantially full-circular facial expanse, and with the outer pole portion presenting an annular facial expanse surrounding that of the inner pole portion. In another embodiment, each of the two pole portions presents a substantially annular facial expanse with the inner pole being hollow. In both embodiments, the inner pole portion has a magnetic permeability which is significantly lower than that of the outer pole portion. An image unit written on a magnetic-image-storage medium by the head takes the form, generally, of a dot characterized by an appreciably larger magnetic field intensity adjacent its perimeter than inside the perimeter.

摘要翻译： 磁图像读/写头包括内和外，基本上共平面的对称布置的磁极部分。 在一个实施例中，公开了头部，内极部分呈现基本上全圆形的面部膨胀部，并且外部极部分呈现围绕内部极部分的环形面部膨胀部。 在另一个实施例中，两个极部分中的每一个呈现基本上环形的面孔，内极是中空的。 在两个实施例中，内极部具有明显低于外极部分的磁导率。 通过头部写在磁图像存储介质上的图像单元通常形成一个点，其特征在于具有与其周边相邻的周边相当大的磁场强度的点。

公开(公告)号：US06204588B1

公开(公告)日：2001-03-20

申请号：US09321504

申请日：1999-05-27

申请人： Gilbert D. Springer

发明人： Gilbert D. Springer

IPC分类号： H02K122

CPC分类号： G11B17/0287 ,  G11B19/2009 ,  G11B25/043 ,  H02K1/02 ,  H02K3/26 ,  H02K5/1737 ,  H02K7/085 ,  H02K7/14 ,  H02K11/00 ,  H02K19/103 ,  H02K29/12 ,  H02K2203/03

摘要： An electric motor having a pancake construction stator and rotor poles that are formed by photolithography. The stator and rotor can be formed from an amorphous material, thereby reducing grain boundaries and allowing smaller poles to be etched. The number of poles, never less than three, can be from 20 to 5000 times the stator diameter in centimeters. The extremely thin rotor comprises a flexible disk spaced from the stator by an air cushion maintained in accordance with forces as dictated by Bernoulli's principle. This insures that the spacing between the rotor and stator is automatically adjusted to minimize the distance between the rotor and stator poles and thereby to maximize flux linkage between the poles. By operating the motor in a range that avoids saturation of the poles, a variable torque motor is provided since increased current through the motor windings allows the magnetic field intensity and thus the flux linkage to increase. Furthermore, by varying the frequency at which the stator windings are fired, the speed of rotation of the rotor can be adjusted. Since an amorphous material such as METGLAS displays high coercivity, rapid changes in frequency can be achieved and rapid switching maintained to insure application of power only during periods of maximum torque. The motor further includes detector windings that monitor magnetic coupling between certain stator poles and the rotor poles, magnetic flux being produced in the certain stator poles by means of a high frequency signal winding. The detector windings comprise four windings capable of monitoring the exact position of the rotor poles of a six phase motor, for purposes of controlling the firing of the phases.

摘要翻译： 具有通过光刻形成的薄饼结构定子和转子极的电动机。 定子和转子可以由非晶材料形成，从而减少晶界并允许蚀刻较小的极。 极数不得小于3，可以是定子直径的20至5000倍（厘米）。 极薄的转子包括一个与定子隔开的柔性盘，该柔性盘通过根据伯努利原理所规定的力而保持的气垫。 这确保了转子和定子之间的间隔被自动调整，以使转子和定子极之间的距离最小化，从而最大化磁极间的磁通。 通过在避免极点饱和的范围内操作电动机，提供可变转矩电动机，因为通过电动机绕组的增加的电流允许磁场强度并因此增加磁通量。 此外，通过改变定子绕组被点火的频率，可以调节转子的转速。 由于诸如METGLAS之类的无定形材料显示出高的矫顽力，所以可以实现频率的快速变化并保持快速开关，以确保仅在最大扭矩期间施加功率。 电动机还包括检测器绕组，其检测某些定子极与转子极之间的磁耦合，通过高频信号绕组在某些定子极中产生磁通量。 检测器绕组包括能够监视六相电动机的转子极的精确位置的四个绕组，用于控制相的点火。

公开(公告)号：US06169354A

公开(公告)日：2001-01-02

申请号：US08653168

申请日：1996-05-24

申请人： Gilbert D. Springer ,  Mark F. Springer

发明人： Gilbert D. Springer ,  Mark F. Springer

IPC分类号： H02K122

CPC分类号： F16C23/04 ,  F16C2370/12 ,  G11B19/2009 ,  H02K1/02 ,  H02K1/22 ,  H02K5/16 ,  H02K5/1737 ,  H02K7/09 ,  H02K19/103 ,  H02K29/12 ,  H02K99/00

摘要： An electric motor having a pancake construction stator and rotor poles that are formed by photolithography. The stator and rotor can be formed from an amorphous material, thereby reducing grain boundaries and allowing smaller poles to be etched. The number of poles, never less than three, can be from 20 to 5000 times the stator diameter in centimeters. The extremely thin rotor comprises a flexible disk spaced from the stator by an air cushion maintained in accordance with forces as dictated by Bemoulli's principle. This insures that the spacing between the rotor and stator is automatically adjusted to minimize the distance between the rotor and stator poles and thereby to maximize flux linkage between the poles. By operating the motor in a range that avoids saturation of the poles, a variable torque motor is provided since increased current through the motor windings allows the magnetic field intensity and thus the flux linkage to increase. Furthermore, by varying the frequency at which the stator windings are fired, the speed of rotation of the rotor can be adjusted. Since an amorphous material such as METGLAS displays high coercivity, rapid changes in frequency can be achieved and rapid switching maintained to insure application of power only during periods of maximum torque. The motor further includes detector windings that monitor magnetic coupling between certain stator poles and the rotor poles, magnetic flux being produced in the certain stator poles by means of a high frequency signal winding. The detector windings comprise four windings capable of monitoring the exact position of the rotor poles of a six phase motor, for purposes of controlling the firing of the phases.

摘要翻译： 具有通过光刻形成的薄饼结构定子和转子极的电动机。 定子和转子可以由非晶材料形成，从而减少晶界并允许蚀刻较小的极。 极数不得小于3，可以是定子直径的20至5000倍（厘米）。 极薄的转子包括一个与定子隔开的柔性盘，该柔性盘通过按照Bemoulli原理所规定的力而保持的气垫。 这确保了转子和定子之间的间隔被自动调整，以使转子和定子极之间的距离最小化，从而最大化磁极间的磁通。 通过在避免极点饱和的范围内操作电动机，提供可变转矩电动机，因为通过电动机绕组的增加的电流允许磁场强度并因此增加磁通量。 此外，通过改变定子绕组被点火的频率，可以调节转子的转速。 由于诸如METGLAS之类的无定形材料显示出高的矫顽力，所以可以实现频率的快速变化并保持快速开关，以确保仅在最大扭矩期间施加功率。 电动机还包括检测器绕组，其检测某些定子极与转子极之间的磁耦合，通过高频信号绕组在某些定子极中产生磁通量。 检测器绕组包括能够监视六相电动机的转子极的精确位置的四个绕组，用于控制相的点火。