-
公开(公告)号：US06999274B2
公开(公告)日：2006-02-14
申请号：US10256572
申请日：2002-09-27
IPC分类号： G11B5/187
CPC分类号： G11B5/187 , G11B5/1871 , G11B5/4893 , G11B5/584 , G11B15/62 , Y10T29/49032 , Y10T29/49043 , Y10T29/49048 , Y10T29/49055 , Y10T29/4906 , Y10T29/49789 , Y10T29/49798
摘要： A servo head for magnetic tape is provided. The head includes a substantial planar head surface. The head includes a leading edge that is disposed adjacent to the head surface such that the tape contacts the leading edge before passing over the head surface. The leading edge includes a rounded portion so as to form an air bearing between the head surface and the tape. The leading edge can include an abrupt change in slope at the leading edge. Alternatively, the leading edge can include a smooth transition.
摘要翻译： 提供了一种用于磁带的伺服磁头。 头部包括大的平面头表面。 头部包括一个与头部表面相邻设置的前缘，使得带子在通过头部表面之前接触前缘。 前缘包括圆形部分，以在头表面和带之间形成空气轴承。 前缘可以包括前缘的斜率突然变化。 或者，前缘可以包括平滑过渡。
-
公开(公告)号：US06373656B1
公开(公告)日：2002-04-16
申请号：US09811070
申请日：2001-03-16
IPC分类号： G11B5187
摘要： A head design that reduces wear at the leading and trailing edges where the tape contacts the head while minimizing any adverse effects on the performance of the head. In one embodiment of the invention, a localized layer of wear resistant material is formed on the leading edge where the tape contacts the head before passing over the head recording surface. In a second embodiment, the leading edge is formed as wear resistant material embedded in the head structure adjacent to the recording surface. And, in a third embodiment, the leading edge is formed as a wear resistant material strip affixed to the side of the head structure. For each embodiment, the wear resistant material may also be applied in the manner described to the trailing edge where the tape may also contact the head after passing over the recording surface.
-
公开(公告)号：US07206167B2
公开(公告)日：2007-04-17
申请号：US10696824
申请日：2003-10-30
IPC分类号： G11B5/23
CPC分类号： G11B5/187 , G11B5/1871 , G11B5/4893 , G11B5/584 , G11B15/62 , Y10T29/49032 , Y10T29/49043 , Y10T29/49048 , Y10T29/49055 , Y10T29/4906 , Y10T29/49789 , Y10T29/49798
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. A rounded leading edge on the head creates an 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 an 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. The head may be formed from an upper ferrite wafer having a non-magnetic spacer. 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精细的伺服模式定义。 头部圆角的前缘形成一个空气轴承，以减少磁带和磁头的磨损。 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，以在头表面和带之间形成空气轴承。 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。 头部可以由具有非磁性间隔物的上部铁氧体晶片形成。 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。
-
公开(公告)号：US06700729B1
公开(公告)日：2004-03-02
申请号：US09691646
申请日：2000-10-17
IPC分类号： G11B2020
CPC分类号： G11B5/4893 , G11B5/00826 , G11B5/56 , G11B5/584
摘要： A device for precision alignment of a write element of a tape head to a transport direction of a media that is transported across the tape head is disclosed. The tape head includes at least one alignment element that is cofabricated with the write element so that both the write element and the alignment element have a fixed orientation with respect to a magnetic axis of the tape head. The alignment element and the write element can be fabricated on the tape head using standard microelectronic photolithographic processes. Preferably, the tape head includes a plurality of alignment elements. Those alignment elements are operative to write alignment transitions onto the media. The alignment transitions can be observed to determine if they are indicative of the write element having a predetermined orientation with respect to the transport direction. A read transducer can be used to generate signals from the alignment transitions and those signals can be analyzed to determine if the predetermined orientation of the write element has been achieved. The tape head can include horizontal and/or vertical elements for a gross visual alignment of the tape head to the media. The alignment transitions can be read by a data element of a separate data head. A signal from the data element can be used to adjust the azimuth of the data head with respect to a direction of transport. In servo writer applications where servo code is prerecorded on the media, the alignment transitions can be used to align the write elements of a servo write head to the transport direction of the media so that inter band skew between adjacent servo bands is significantly reduced.
摘要翻译： 公开了一种用于将带头的写入元件精确对准到跨磁带头传送的介质的输送方向的装置。 带头包括与写入元件共同构成的至少一个对准元件，使得写入元件和对准元件相对于磁带头的磁轴具有固定取向。 可以使用标准微电子光刻工艺在带头上制造对准元件和写入元件。 优选地，带头包括多个对准元件。 这些对准元件可操作以将对准转变写入到介质上。 可以观察对准转换以确定它们是否表示相对于输送方向具有预定取向的写入元件。 读取换能器可用于从对准转换产生信号，并且可以分析这些信号以确定是否已经实现了写入元件的预定取向。 带头可以包括水平和/或垂直元件，用于将磁带头与介质的总体视觉对准。 对齐转换可以由单独数据头的数据元素读取。 可以使用来自数据元素的信号来相对于传送方向调整数据头的方位角。 在伺服写入器应用中，伺服代码被预先记录在介质上，对准转换可用于将伺服写入头的写入元件与介质的传输方向对齐，以使相邻伺服带之间的带间偏移明显减小。
-
公开(公告)号：US06647613B2
公开(公告)日：2003-11-18
申请号：US09791903
申请日：2001-02-22
IPC分类号： G11B542
CPC分类号： G11B5/187 , G11B5/1871 , G11B5/4893 , G11B5/584 , G11B15/62 , Y10T29/49032 , Y10T29/49043 , Y10T29/49048 , Y10T29/49055 , Y10T29/4906 , Y10T29/49789 , Y10T29/49798
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 an planar photolithography permit fine servo pattern definition with low linewidth variation. Non-magnetic material is photolithographically defined to produce gaps above a 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. Additionally, a lower ferrite wafer may be mated to the upper ferrite wafer to complete a magnetic circuit around the gaps. A rounded leading edge on the head creates an air bearing to reduce ware of the tape and of the head. The leading edge is rounded to form an air bearing between the head surface and the tape. Rounding of the leading edge can be accomplished by a variety of methods including blending, grinding, and faceting.
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，大晶片表面和适合于均匀光刻胶应用的轮廓，平面光刻允许具有低线宽变化的精细伺服图案定义。 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。 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。 头部圆形的前缘形成一个空气轴承，以减少磁带和头部的物品。 前缘是圆形的，以在头表面和带之间形成空气轴承。 前缘的四舍五入可以通过各种方法实现，包括混合，研磨和刻面。
-
公开(公告)号：US06236537B1
公开(公告)日：2001-05-22
申请号：US09313889
申请日：1999-05-18
IPC分类号： G11B5187
CPC分类号： G11B5/584 , G11B5/255 , G11B5/4893 , G11B5/581 , G11B15/62
摘要： A head design that reduces wear at the leading and trailing edges where the tape contacts the head while minimizing any adverse effects on the performance of the head. In one embodiment of the invention, a localized layer of wear resistant material is formed on the leading edge where the tape contacts the head before passing over the head recording surface. In a second embodiment, the leading edge is formed as wear resistant material embedded in the head structure adjacent to the recording surface. And, in a third embodiment, the leading edge is formed as a wear resistant material strip affixed to the side of the head structure. For each embodiment, the wear resistant material may also be applied in the manner described to the trailing edge where the tape may also contact the head after passing over the recording surface.
-
公开(公告)号：US06898045B2
公开(公告)日：2005-05-24
申请号：US10723757
申请日：2003-11-26
CPC分类号： G11B5/4893 , G11B5/00826 , G11B5/56 , G11B5/584
摘要： A device for precision alignment of a write element of a tape head to a transport direction of a media that is transported across the tape head is disclosed. The tape head includes at least one alignment element that is cofabricated with the write element so that both the write element and the alignment element have a fixed orientation with respect to a magnetic axis of the tape head. The alignment element and the write element can be fabricated on the tape head using standard microelectronic photolithographic processes. Preferably, the tape head includes a plurality of alignment elements. Those alignment elements are operative to write alignment transitions onto the media. The alignment transitions can be observed to determine if they are indicative of the write element having a predetermined orientation with respect to the transport direction. A read transducer can be used to generate signals from the alignment transitions and those signals can be analyzed to determine if the predetermined orientation of the write element has been achieved. The tape head can include horizontal and/or vertical elements for a gross visual alignment of the tape head to the media. The alignment transitions can be read by a data element of a separate data head. A signal from the data element can be used to adjust the azimuth of the data head with respect to a direction of transport. In servo writer applications where servo code is prerecorded on the media, the alignment transitions can be used to align the write elements of a servo write head to the transport direction of the media so that inter band skew between adjacent servo bands is significantly reduced.
摘要翻译： 公开了一种用于将带头的写入元件精确对准到跨磁带头传送的介质的输送方向的装置。 带头包括与写入元件共同构成的至少一个对准元件，使得写入元件和对准元件相对于磁带头的磁轴具有固定取向。 可以使用标准微电子光刻工艺在带头上制造对准元件和写入元件。 优选地，带头包括多个对准元件。 这些对准元件可操作以将对准转变写入到介质上。 可以观察对准转换以确定它们是否表示相对于输送方向具有预定取向的写入元件。 读取换能器可用于从对准转换产生信号，并且可以分析这些信号以确定是否已经实现了写入元件的预定取向。 带头可以包括水平和/或垂直元件，用于将磁带头与介质的总体视觉对准。 对齐转换可以由单独数据头的数据元素读取。 可以使用来自数据元素的信号来相对于传送方向调整数据头的方位角。 在伺服写入器应用中，伺服代码被预先记录在介质上，对准转换可用于将伺服写入头的写入元件与介质的传输方向对齐，以使相邻伺服带之间的带间偏移明显减小。
-
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
CPC分类号： G11B5/187 , G11B5/1871 , G11B5/4893 , G11B5/584 , G11B15/62 , Y10T29/49032 , Y10T29/49043 , Y10T29/49048 , Y10T29/49055 , Y10T29/4906 , Y10T29/49789 , Y10T29/49798
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。
-
9.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
CPC分类号： G11B5/187 , G11B15/62 , G11B5/584 , G11B5/1871 , G11B5/4893 , Y10T29/49032 , Y10T29/49043 , Y10T29/49048 , Y10T29/49055 , Y10T29/4906 , Y10T29/49789 , Y10T29/49798
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。
-
10.发明授权公开(公告)号：US06865037B2
公开(公告)日：2005-03-08
申请号：US10272674
申请日：2002-10-17
CPC分类号： G02B26/06 , G01J3/453 , G02B7/006 , G02B26/0883
摘要： Systems and methods for adjusting optical path length of an optical path are provided. The systems and methods can be used to controllably adjust optical path length in an external cavity laser. A representative optical path having a first end and a second end comprises a first transparent refractive element located in the optical path between the first end and the second end. The transparent refractive element is adjustable to adjust the optical path length of the optical path without changing the physical distance between the first end and the second end. A representative method includes introducing a transparent refractive element into the optical path and adjusting the transparent refractive element to change the optical path length without changing the physical distance between the first end and the second end of the optical path.
摘要翻译： 提供了用于调节光路的光程长度的系统和方法。 该系统和方法可用于可控地调节外腔激光器中的光程长度。 具有第一端和第二端的代表性光路包括位于第一端和第二端之间的光路中的第一透明折射元件。 透明折射元件是可调节的，以调节光路的光路长度，而不改变第一端和第二端之间的物理距离。 一种代表性的方法包括将透明折射元件引入光路并调节透明折射元件以改变光路长度，而不改变光路的第一端和第二端之间的物理距离。
-
-
-
-
-
-
-
-
-
搜索结果
21 条记录 (耗时 0.021 秒)
