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1. 发明授权

US4593334A Thin film transducer 失效
标题翻译：薄膜换能器
公开(公告)号：US4593334A
公开(公告)日：1986-06-03
申请号：US490631
申请日：1983-05-02
申请人： Nathaniel C. Anderson , Larry E. Daby , Gene A. Johnson , Patrick M. McCaffrey
发明人： Nathaniel C. Anderson , Larry E. Daby , Gene A. Johnson , Patrick M. McCaffrey
IPC分类号： G11B5/31 , G11B5/12
CPC分类号： G11B5/3133 , G11B5/3166
摘要： A film transducer head design is formed on a substrate where the first yoke layer and electric terminal strip that connects the coil center pad to the head exterior are formed at the same time followed by successive layers that form the transducer gap, coil insulation, coil, coil insulation and the second yoke layer. This sequence allows the coil to be tested immediately after deposition of the coil material and at a time in the fabrication sequence when it can be reworked or replaced if a discontinuity (open) or shorted turn(s) is (are) identified.
摘要翻译：在基板上形成有膜转换器头部设计，其中同时形成将线圈中心焊盘连接到头部外部的第一磁轭层和电端子板，随后形成连续的层，形成换能器间隙，线圈绝缘，线圈，线圈绝缘和第二轭铁层。该顺序允许在沉积线圈材料之后立即对线圈进行测试，并且在制造顺序中的一个时间，当可以重新加工或更换时，如果确定了不连续（开路）或短路。

2. 发明授权

US4375390A Thin film techniques for fabricating narrow track ferrite heads 失效
标题翻译：用于制造窄轨道铁氧体磁头的薄膜技术
公开(公告)号：US4375390A
公开(公告)日：1983-03-01
申请号：US357947
申请日：1982-03-15
申请人： Nathaniel C. Anderson , Larry E. Daby , Vincent D. Gravdahl , Patrick M. McCaffrey , Bruce A. Murray , Bruce W. Wright
发明人： Nathaniel C. Anderson , Larry E. Daby , Vincent D. Gravdahl , Patrick M. McCaffrey , Bruce A. Murray , Bruce W. Wright
IPC分类号： C23F4/00 , C23F1/00 , G03F7/00 , G11B5/127 , G11B5/133 , G11B5/193 , G11B5/31 , H01F41/34 , C23C15/00
CPC分类号： H01F41/34 , G03F7/00 , G11B5/193
摘要： A process for producing a reactive ion-etched structure with height and width dimensions of the order of 25 microns or less on a ferrite substrate surface is disclosed. A mask of positive water saturated photoresist is formed on the substrate. A metal taken from the group consisting of nickel and a nickel-iron alloy is plated through the mask. The photoresist mask is removed to leave a pattern in the plated metal. The ferrite substrate surface that is exposed by the pattern is reactive ion etched with a power density of >1w/cm.sup.2 and a bias voltage
摘要翻译：公开了一种在铁素体衬底表面上制造高度和宽度尺寸为25微米或更小的反应离子蚀刻结构的方法。在基板上形成正水饱和光刻胶的掩模。从由镍和镍 - 铁合金组成的组中取出的金属通过掩模进行电镀。去除光致抗蚀剂掩模以在电镀金属中留下图案。通过图案曝光的铁氧体衬底表面以> 1w / cm 2的功率密度和偏置电压<-100伏特进行反应离子蚀刻。

3. 发明授权

US4481071A Process of lift off of material 失效
标题翻译：剥离材料的过程
公开(公告)号：US4481071A
公开(公告)日：1984-11-06
申请号：US566871
申请日：1983-12-29
申请人： Nathaniel C. Anderson , Robert B. Chesnut , Larry E. Daby
发明人： Nathaniel C. Anderson , Robert B. Chesnut , Larry E. Daby
IPC分类号： C23F1/14 , G11B5/23 , G11B5/31 , G11B5/48 , H01F41/34 , C23F1/02 , B44C1/22 , C03C15/00 , C03C25/06
CPC分类号： G11B5/488 , C23F1/14 , G11B5/3163 , H01F41/34 , Y10T29/49044
摘要： Process for lift-off fabrication of sputtered dielectric or nonmagnetic gap materials and thin-film heads for either a single-element thin-film head or side-by-side elements on a thin-film head. The lift-off process utilizes a copper coating that is removed by a twenty percent solution of ammonium persulfate with a pH in the range of seven to nine to assure complete removal of gap material from the back closure of the thin-film head without damage to the underlying permalloy. The process can also be utilized to obtain a multiple layer deposits on a single thin-film had by repeating the steps of the process. The process provides for a clean hole, no dielectric on the surface nor any attacking on the magnetic material.
摘要翻译：用于单片元件薄膜头或薄膜头上并排元件的溅射电介质或非磁性间隙材料和薄膜头的剥离制造工艺。剥离工艺利用铜涂层，其中二氧化钛的二恶烷溶液的pH值在七至九的范围内，以确保从薄膜头的后盖完全除去间隙材料，而不会损坏底层坡莫合金。通过重复该方法的步骤，该方法也可用于在单个薄膜上获得多层沉积物。该过程提供了一个清洁的孔，表面上没有电介质，也没有对磁性材料的任何攻击。

4. 发明授权

US06683749B2 Magnetic transducer having inverted write element with zero delta in pole tip width 有权
标题翻译：具有反向写入元件的磁性传感器，磁极尖端宽度为零
公开(公告)号：US06683749B2
公开(公告)日：2004-01-27
申请号：US10034903
申请日：2001-12-19
申请人： Larry E. Daby , James C. Cates , John P. Biesecker
发明人： Larry E. Daby , James C. Cates , John P. Biesecker
IPC分类号： G11B531
CPC分类号： G11B5/3116 , G11B5/02 , G11B5/187 , G11B5/1871 , G11B5/313 , G11B5/3163 , Y10T29/49046 , Y10T29/49052
摘要： A method of fabrication and a magnetic transducer having an inverted write element with a zero delta in pole tip width to provide improved bi-directional control over write track width and written erase bands on media. The transducer includes a top pole and a bottom pole configured to provide the same write track width and relatively small erase bands when either pole is the trailing pole depending on direction of movement of the media relative to the transducer. The bottom pole has an upper portion and a lower portion. The bottom pole upper portion width is less than the bottom pole lower portion width. The top pole has a main portion formed opposite to the bottom pole upper portion. The top pole main portion has a main portion width which is equal to the bottom pole upper portion width.
摘要翻译：一种制造方法和具有反向写入元件的磁换能器，其具有极尖端宽度的零增量，以提供对介质上的写入磁道宽度和写入擦除带的改进的双向控制。换能器包括顶极和底极，其被配置为当根据介质相对于换能器的移动方向，当任一极是后极时，提供相同的写磁道宽度和相对较小的擦除带。底极具有上部和下部。底极上部宽度小于底极下部宽度。上极具有与底极上部相对的主要部分。顶极主体部具有与底极上部宽度相等的主要部分宽度。

5. 发明授权

US06826020B2 Merged-pole magnetic head having inverted write elements 有权
标题翻译：具有倒写写元件的合并磁头磁头
公开(公告)号：US06826020B2
公开(公告)日：2004-11-30
申请号：US09933996
申请日：2001-08-20
申请人： Larry E. Daby , Mark Lee Watson
发明人： Larry E. Daby , Mark Lee Watson
IPC分类号： G11B539
CPC分类号： G11B5/3967 , G11B5/00817 , G11B5/127 , G11B5/2652 , G11B5/29 , G11B5/3103 , G11B5/4893 , G11B5/584 , G11B5/588
摘要： A two bump magnetic head for writing and reading information to a tape includes a merged-pole read/write element structure with inverted write elements. Each inverted write element includes top and bottom write poles. The write poles are fabricated such that the longitudinal dimension of the bottom write pole is smaller than the longitudinal dimension of the top write pole in a zero throat region. This results in an “inverted” structure. An upper portion of the bottom write pole is milled in at least the zero throat region early in fabrication to produce a precise width adjoining a write gap. The trimmed upper portion of bottom write pole results in an improved write geometry that produces tightly defined tracks.
摘要翻译：用于向磁带写入和读取信息的两个隆起磁头包括具有反向写入元件的合并磁极读/写元件结构。每个反向写入元件包括顶部和底部写入极。写入极被制造成使得底部写入极的纵向尺寸小于零喉区域中顶部写入极的纵向尺寸。这导致“倒”结构。底部写入极的上部在至少零喉区域中在制造早期被铣削以产生与写入间隙相邻的精确宽度。底部写入极的修剪的上部导致改进的写入几何形状，其产生紧密限定的轨迹。

6. 发明授权

US07382585B1 Magnetic head having AMR reader, writer, and GMR reader 有权
标题翻译：具有AMR读写器，写入器和GMR读取器的磁头
公开(公告)号：US07382585B1
公开(公告)日：2008-06-03
申请号：US11241343
申请日：2005-09-30
申请人： John P. Nibarger , Francis X. Campos , Larry E. Daby
发明人： John P. Nibarger , Francis X. Campos , Larry E. Daby
IPC分类号： G11B5/33
CPC分类号： G11B5/39 , G11B5/00878 , G11B5/3948 , G11B5/397 , G11B5/398
摘要： A magnetic head for writing data to and reading data from a magnetic recording medium includes an inductive-type writer, an anisotropic magneto-resistive (AMR) reader, and a giant magneto-resistive (GMR) reader. The AMR reader is used to read data from “high magnetic flux” recording mediums which have been recorded for use with AMR sensors. The GMR reader is used to read data from “low magnetic flux” recording mediums which have been recorded for use with GMR sensors. As such, the magnetic head provides for backward compatibility between the previously prevalent “high magnetic flux” recording mediums and the expected future prevalent “low magnetic flux” recording mediums. The magnetic head may be configured such that the writer and the AMR and GMR readers share sensor shields in various configurations in order to carry out their writing and reading functions.
摘要翻译：用于将数据写入和从磁记录介质读取数据的磁头包括电感式写入器，各向异性磁阻（AMR）读取器和巨磁阻（GMR）读取器。 AMR读卡器用于从AMR传感器使用的“高磁通量”记录介质中读取数据。 GMR读取器用于读取已记录用于GMR传感器的“低磁通量”记录介质中的数据。因此，磁头提供了先前普遍存在的“高磁通”记录介质与预期的未来普遍的“低磁通”记录介质之间的向后兼容性。磁头可以被配置为使得写入器和AMR和GMR读取器共享各种配置的传感器屏蔽，以便执行其写入和读取功能。

7. 发明授权

US07359151B1 Magnetic head having writer with embedded write gap between wear-resistant pole tip layers 有权
标题翻译：具有写入器的磁头在耐磨极尖端层之间具有嵌入的写入间隙
公开(公告)号：US07359151B1
公开(公告)日：2008-04-15
申请号：US11094703
申请日：2005-03-30
申请人： John P. Biesecker , Larry E. Daby
发明人： John P. Biesecker , Larry E. Daby
IPC分类号： G11B5/31
CPC分类号： G11B5/1875 , G11B5/3106 , G11B5/3116
摘要： A method of fabricating a magnetic writer includes depositing a wear-resistant bottom pole tip layer on a bottom pole; depositing a write gap layer on the bottom pole tip layer; and depositing a wear-resistant top pole tip layer on the write gap layer. The layers are patterned such that the write gap layer and the top pole tip layer each have a track width facing a media surface and the write gap layer and the top pole tip layer each have the same length equal to a throat height between the media surface and a zero throat location. The bottom pole tip layer and the bottom pole are patterned such that the bottom pole tip layer has the track width facing the media surface and the bottom pole has a bottom pole tip at the media surface with the bottom pole tip having the track width facing the media surface.
摘要翻译：制造磁性写入器的方法包括在底极上沉积耐磨底极尖端层; 在底极尖端层上沉积写间隙层; 以及在所述写间隙层上沉积耐磨顶极尖端层。这些层被图案化，使得写间隙层和顶极尖端层各自具有面向介质表面的轨道宽度，并且写间隙层和顶极尖端层各自具有等于介质表面之间的喉部高度的相同长度和零喉部位置。底极尖端层和底极被图案化，使得底极尖端层具有面向介质表面的轨道宽度，并且底极在介质表面处具有底极尖端，底极尖端具有面向媒体表面。

8. 发明授权

US07298586B1 Thin-film read element with multiple read sensors 有权
标题翻译：具有多个读取传感器的薄膜读取元件
公开(公告)号：US07298586B1
公开(公告)日：2007-11-20
申请号：US10935048
申请日：2004-09-07
申请人： Francis Campos , Larry E. Daby , Hubert Hayworth
发明人： Francis Campos , Larry E. Daby , Hubert Hayworth
IPC分类号： G11B5/127 , G11B5/23 , G11B5/147
CPC分类号： G11B5/00826 , G11B5/3967 , Y10T29/49044
摘要： The present invention relates to a thin-film read element for use in reading magnetic signals from a device. The read element includes a first thin-film read sensor and a second thin-film read sensor that are each configured to convert the magnetic signals of the device to electrical signals.
摘要翻译：本发明涉及一种用于从设备读取磁信号的薄膜读取元件。读取元件包括第一薄膜读取传感器和第二薄膜读取传感器，每个被配置为将器件的磁信号转换为电信号。

9. 发明授权

US06563669B1 Inverted write head with high-precision track width definition 有权
标题翻译：倒写写头具有高精度的轨道宽度定义
公开(公告)号：US06563669B1
公开(公告)日：2003-05-13
申请号：US09660662
申请日：2000-09-13
申请人： Larry E. Daby , James C. Cates , John P. Biesecker
发明人： Larry E. Daby , James C. Cates , John P. Biesecker
IPC分类号： G11B5147
CPC分类号： G11B5/3116 , G11B5/313 , G11B5/3163 , G11B5/3967
摘要： A method of fabricating a thin film magnetic transducer and the resulting transducer structure is disclosed. The method starts with the formation of a bottom pole having an upper portion and a lower portion in a zero throat region. The upper portion has an upper portion width and the lower portion had a lower portion width, wherein the lower portion width is greater than the upper portion width. A gap layer is then formed over the bottom pole, and the top pole is formed over the gap layer. The top pole width is greater than the bottom pole's lower portion width. In one embodiment, a planarization layer is deposited overlaying the bottom pole prior to formation of the gap layer. Lapping is then performed to reduce the planarization layer and the bottom pole's upper portion to a flat surface suitable for receiving the gap layer deposition.
摘要翻译：公开了制造薄膜磁换能器的方法和所得的换能器结构。该方法开始于在零喉部区域中形成具有上部和下部的底极。上部具有上部宽度，下部具有下部宽度，其中下部宽度大于上部宽度。然后在底极上形成间隙层，并且顶部极形成在间隙层上。顶极宽度大于底极的下部宽度。在一个实施例中，在形成间隙层之前沉积覆盖底极的平坦化层。然后进行研磨以将平坦化层和底极的上部部分减小到适于接收间隙层沉积的平坦表面。

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