Servo head design and method of using the same
    42.
    发明授权
    Servo head design and method of using the same 有权
    伺服头设计及使用方法

    公开(公告)号:US06229669B1

    公开(公告)日:2001-05-08

    申请号:US09449010

    申请日:1999-11-24

    IPC分类号: G11B5187

    摘要: A servo head having a substantially planar head surface and a leading rounded edge is disclosed with a technique of utilizing the disclosed servo head to write to tape passing over the planar head surface, the tape separate from the servo head by an air bearing. The rounded leading edge on the head creates the air bearing to reduce wear of the tape and of the head. Moreover, any head wear occurs at the leading edge rather than in the region of the head where the servo pattern is formed. The servo write head may have a substantially planar head surface. A leading edge is disposed adjacent to the head surface such that the tape contacts the leading edge before passing over the head surface. The leading edge is rounded to form the air bearing between the head surface and the tape. A rounded trailing edge may be disposed adjacent to the head surface such that the tape passes over the trailing edge after passing over the head surface.

    摘要翻译: 公开了一种具有基本上平面的头表面和前圆形边缘的伺服头,其技术是利用所公开的伺服头来写入通过平面头表面的带子,该带通过空气轴承与伺服头分离。 头部圆角的前缘产生空气轴承,以减少胶带和头部的磨损。 此外,任何头部磨损发生在前缘而不是在形成伺服图案的头部的区域中。 伺服写入头可以具有基本平坦的头表面。 前缘邻近头表面设置,使得带在通过头表面之前接触前缘。 前缘是圆形的,以形成头表面和胶带之间的空气轴承。 圆形的后缘可以邻近头部表面设置,使得带在经过头表面之后越过后缘。

    Batch fabricated servo write head having low write-gap linewidth
variation
    43.
    发明授权
    Batch fabricated servo write head having low write-gap linewidth variation 失效
    具有低写入间隙线宽变化的批量制造的伺服写入头

    公开(公告)号:US6018444A

    公开(公告)日:2000-01-25

    申请号:US959509

    申请日:1997-10-28

    摘要: A batch fabrication technique is described that increases the manufacturing efficiency of servo write heads and also improves servo pattern definition for fine features, while reducing tape and head wear. Multiple heads are fabricated as a batch from one or more ferrite wafers. A nominally flat, large wafer surface and a contour suitable for uniform photoresist application and planar photolithography permit fine servo pattern definition with low linewidth variation. Non-magnetic material is photolithographically defined to produce gaps above the spacer. The non-magnetic material may be photoresist, semiconductor materials, glass, metal or the like. The material may even be removed later to leave air gaps. The non-magnetic material forms a region where the field loops out to intersect the passing tape, thereby transferring a magnetic pattern to tape. Additionally, a lower ferrite wafer may be mated to the upper ferrite wafer to complete a magnetic circuit around the gaps. The upper or lower ferrite wafer may have a channel through which an inductive winding passes. Multiple heads may be formed through batch processing of the upper and lower ferrite wafers.

    摘要翻译: 描述了一种批量制造技术,其提高了伺服写入头的制造效率,并且还改善了精细特征的伺服模式定义,同时减少了磁带和磁头磨损。 多个头部从一个或多个铁氧体晶片制成批次。 标称平坦,大的晶片表面和适用于均匀光刻胶应用和平面光刻的轮廓允许具有低线宽变化的精细伺服模式定义。 非磁性材料被光刻定义以在间隔物上方产生间隙。 非磁性材料可以是光致抗蚀剂,半导体材料,玻璃,金属等。 材料甚至可以稍后移除以留下空隙。 非磁性材料形成区域,其中磁场循环出来以与通过的磁带相交,从而将磁性图案转印到磁带上。 此外,下部铁氧体晶片可以与上部铁氧体晶片配合,以在该间隙周围形成磁路。 上或下铁素体晶片可以具有感应绕组通过的通道。 可以通过上下铁素体晶片的批量处理形成多个头。