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    • 1. 发明授权
    • Method of making a magnetic head assembly
    • 制造磁头组件的方法
    • US4160315A
    • 1979-07-10
    • US896635
    • 1978-04-17
    • Sirjang L. TandonJohn P. Moon
    • Sirjang L. TandonJohn P. Moon
    • G11B5/127G11B5/265G11B5/42
    • G11B5/265G11B5/024G11B5/1272G11B5/012Y10T29/49041Y10T29/49048Y10T29/49055
    • In methods of making head assemblies, a ceramic slider having a row of receiving apertures is united with a multiple serial ferrite arch structure shaped in complementary fashion so that successive arches thereof register within the apertures to define erase pole pieces. The face of the resulting assembly is ground flat and parallel to the arch base and the bridges thus formed on the base side may be separated between the arches. The assembly is then bisected along the row of pole pieces into complementary halves, and the facing surfaces are ground and lapped to provide a desired width for the erase member formed by the pole piece half and associated leg of one of the ferrite arches. Grooves are cut into the bisected surfaces at the pole pieces to define the erase track width and the erase gap length for the erase member. A read/write magnetic head structure is separately batch fabricated in the form of core strips, with side faces that are precisely parallel and smooth, and this is unified in a magnetic head assembly between pairs of opposite erase members embedded in the slider halves. Thereafter, the serial assembly is sectioned into individual heads, and the magnetic circuits completed for the read/write head and the erase head.
    • 在制造头部组件的方法中,具有一排接收孔的陶瓷滑块与多个串联铁氧体拱形结构结合,该多个串联铁氧体拱形结构以互补的方式成形,使得其连续的拱在孔内配准以限定擦除极片。 所得组件的表面被平坦地平行并且平行于拱形基部,并且在基部侧形成的桥可以在拱形件之间分离。 然后将组件沿着极片排成二等分成互补的半部,并且对置的表面被研磨和研磨,以为由铁片拱形件之一的极片半部和相关腿形成的擦除构件提供期望的宽度。 将沟槽切割成极片处的平分表面,以限定擦除构件的擦除轨迹宽度和擦除间隙长度。 读/写磁头结构分别以核心条的形式批量制造,侧面精确平行和平滑,并且它们被整合在嵌入在滑块半部中的成对相对的擦除构件之间的磁头组件中。 此后,将串联组件分割成单独的磁头,并且为读/写磁头和擦除磁头完成磁路。
    • 3. 发明授权
    • Magnetic recording device for double sided media
    • 双面介质磁记录装置
    • US4151573A
    • 1979-04-24
    • US805731
    • 1977-06-13
    • Sirjang L. TandonAlfred C. HackneyRoy A. Applequist
    • Sirjang L. TandonAlfred C. HackneyRoy A. Applequist
    • G11B17/32G11B5/58G11B5/60G11B21/20
    • G11B5/60G11B5/58
    • In a data storage system using a non-rigid magnetic storage surface, such as a floppy disc, and in which recording and reproduction are to be effected on both sides of the element by contact transducers, significant improvements over prior art devices are realized by employing a fixed transducer on one side of the element, and a movable transducer element on the opposite side. The movable transducer may be gimbal mounted on a pivoted spring-loaded arm of low mass and high stiffness to urge the magnetic storage surface against the fixed transducer with a light force. The force is adequate, together with a slight penetration of the fixed transducer into the plane of the disc, to correct deflections of the storage surface in directions transverse to its principal plane in the region between the transducers. Thus the transducers are maintained in operative relation for maximum flux interchange, but without introducing undue wear or requiring a long head settling time.
    • 在使用诸如软盘的非刚性磁存储表面的数据存储系统中,并且其中通过接触传感器在元件的两侧进行记录和再现,在现有技术的装置方面,通过采用 在元件的一侧上的固定换能器和在相对侧上的可移动换能器元件。 活动传感器可以是万向架安装在质量低且刚度高的枢轴弹簧加载的臂上,以轻的力将磁存储表面推向固定换能器。 该力是足够的,连同固定传感器轻微地穿入盘的平面,以在换能器之间的区域中校正存储表面在横向于其主平面的方向上的偏转。 因此,换能器保持在操作关系中以实现最大的通量交换,但是不引入不适当的磨损或需要长的头沉降时间。