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    • 6. 发明授权
    • Lapping sensor for thin film recording elements and method for
manufacturing same
    • 用于薄膜记录元件的研磨传感器及其制造方法
    • US5997381A
    • 1999-12-07
    • US939937
    • 1997-09-29
    • Richard H. DeeJoseph E. Torline
    • Richard H. DeeJoseph E. Torline
    • G11B5/187G11B5/31B24B49/02B24B49/10
    • G11B5/3116G11B5/3166G11B5/1871Y10T29/49048
    • A lapping sensor is provided for measuring a throat height of a thin film recording element during a mechanical lapping process. The recording element is fabricated in a photolithographic process and has a zero throat location. The lapping sensor includes a sensor device for generating an output signal indicative of the throat height during the lapping process, and a calibration switch in electrical communication with the sensor device. The switch is fabricated during the same photolithographic process as the recording element and generates an output signal during the lapping process indicative of a low resistance value up to a selected distance from the zero throat location of the recording element, and indicative of a high resistance value thereafter. Transition of the switch output signal from the low resistance value to the high resistance value during the lapping process is used to calibrate the sensor device output signal to the selected distance from the zero throat location of the recording element. A method for manufacturing the lapping sensor is also provided.
    • 提供了一种研磨传感器,用于在机械研磨过程中测量薄膜记录元件的喉部高度。 记录元件在光刻工艺中制造并且具有零喉部位置。 研磨传感器包括用于在研磨过程中产生指示喉部高度的输出信号的传感器装置,以及与传感器装置电连通的校准开关。 该开关在与记录元件相同的光刻处理期间制造,并且在研磨过程期间产生一个输出信号,其指示从记录元件的零喉部位置到选定距离的低电阻值,并且指示高电阻值 之后 在研磨过程中将开关输出信号从低电阻值转换到高电阻值用于将传感器装置输出信号校准到距离记录元件的零喉部位置的选定距离。 还提供了一种用于制造研磨传感器的方法。
    • 10. 发明授权
    • Servo write head
    • 伺服写头
    • US06943987B1
    • 2005-09-13
    • US10330895
    • 2002-12-27
    • Robert M. RaymondRichard H. Dee
    • Robert M. RaymondRichard H. Dee
    • G11B5/584G11B21/02
    • G11B5/584
    • A servo write head for magnetic tape is provided. The invention includes first and second non-magnetic substrates and first and second magnetic layers deposited between the non-magnetic substrates. A middle non-magnetic substrate is then deposited between the first and second magnetic layers and forms the magnetic gap. In one embodiment, non-magnetic protective layers are placed between the middle substrate and magnetic layers and form part of the gap. A contoured top layer of magnetic material is deposited across the other layers and substrates and has at least one recording gap, and wherein the top layer forms a magnetic pattern for writing a servo pattern to the tape.
    • 提供了用于磁带的伺服写入头。 本发明包括第一和第二非磁性衬底以及沉积在非磁性衬底之间的第一和第二磁性层。 然后将中间非磁性衬底沉积在第一和第二磁性层之间并形成磁隙。 在一个实施例中,非磁性保护层被放置在中间基板和磁性层之间并形成间隙的一部分。 磁性材料的成型顶层横跨其它层和衬底沉积并且具有至少一个记录间隙,并且其中顶层形成用于将伺服图案写入磁带的磁图案。