公开(公告)号：US06795277B2

公开(公告)日：2004-09-21

申请号：US10067859

申请日：2002-02-08

申请人： Yuko Tsuchiya ,  Hiroyuki Hoshiya ,  Yoshiaki Kawato ,  Katsuro Watanabe ,  Hiroshi Ide

发明人： Yuko Tsuchiya ,  Hiroyuki Hoshiya ,  Yoshiaki Kawato ,  Katsuro Watanabe ,  Hiroshi Ide

IPC分类号： G11B5265

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/2652 ,  G11B5/3146 ,  G11B5/315

摘要： Provided is a thin film single pole head for perpendicular magnetic recording, which has a structure offering a high formatted volume, easy servo, difficulty of influencing a recording pattern on a medium, and capability of shortening processing time. This thin film single pole head for perpendicular magnetic recording is formed on a reproducing head composed of a pair of shield layers formed on a substrate, and a reproducing element formed therebetween. A structure is provided, where an auxiliary pole is not disposed between the reproducing element of the reproducing head and the main pole of a recording head when seen from a surface facing to recording media.

摘要翻译： 提供一种用于垂直磁记录的薄膜单极头，其具有提供高格式化体积，容易伺服，难以影响介质上的记录图案的结构以及缩短处理时间的能力的结构。 用于垂直磁记录的这种薄膜单极头形成在由形成在基板上的一对屏蔽层和由它们之间形成的再现元件构成的再现头上。 提供了一种结构，其中当从面向记录介质的表面看时，辅助极不设置在再现头的再现元件和记录头的主极之间。

公开(公告)号：US06496329B2

公开(公告)日：2002-12-17

申请号：US09997151

申请日：2001-11-29

申请人： Geoffrey A. Hungerford ,  Robert B. Chesnutt

发明人： Geoffrey A. Hungerford ,  Robert B. Chesnutt

IPC分类号： G11B5265

CPC分类号： G11B5/4893 ,  G11B5/3103 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T29/49046 ,  Y10T29/49052

摘要： Reducing alignment errors between a read element and corresponding write elements permits narrower data tracks and, hence, greater data density on magnetic tape. A method for manufacturing a thin film tape head having multiple write elements and at least one read element corresponding to each write element is provided. Excess material is trimmed from each write element to align the write element with corresponding read elements. The excess material may be track trimmed using a focused ion beam.

公开(公告)号：US06744594B2

公开(公告)日：2004-06-01

申请号：US10034567

申请日：2001-12-28

申请人： Edward V. Denison ,  Mark Hennecken ,  Mark L. Watson ,  Steven G. Trabert

发明人： Edward V. Denison ,  Mark Hennecken ,  Mark L. Watson ,  Steven G. Trabert

IPC分类号： G11B5265

CPC分类号： G11B5/584 ,  G11B5/4893 ,  G11B27/322 ,  G11B2220/90

摘要： A servo track write head writes low frequency transitions for fine transverse positioning and high frequency fields providing additional information. The servo track write head includes a first write gap with at least one gap section at a first angle relative to a tape direction. A second write gap has at least one gap section at a second angle, not equal to the first angle. The first and second write gaps write low frequency transitions in each servo frame. A third write gap writes high frequency transitions in each servo frame.

摘要翻译： 伺服磁道写入头写入低频转换，用于精细横向定位和提供附加信息的高频场。 伺服磁道写入头包括与相对于磁带方向成一定角度的至少一个间隙部分的第一写入间隙。 第二写入间隙具有不等于第一角度的第二角度的至少一个间隙部分。 第一和第二写入间隙写入每个伺服帧中的低频转换。 第三个写入间隙在每个伺服帧中写入高频率转换。

公开(公告)号：US06278577B1

公开(公告)日：2001-08-21

申请号：US08438319

申请日：1995-05-10

申请人： Joseph Adam Aboaf ,  Edward Virgil Denison ,  Jules David Friedman ,  Vincent Noel Kahwaty

发明人： Joseph Adam Aboaf ,  Edward Virgil Denison ,  Jules David Friedman ,  Vincent Noel Kahwaty

IPC分类号： G11B5265

CPC分类号： G11B5/3967 ,  G11B5/2652 ,  G11B5/3103 ,  G11B5/4893 ,  G11B5/584

摘要： A multi-element read-write magnetic recording head for recording information on a magnetic tape and for reading recorded information therefrom is provided. The recording head comprises an equal number of associated read elements and write elements to form a two-gap recording head comprising pairs of read and write elements. The two-gap recording head further comprises a first module and a second module, the first and second modules each comprising a plurality of read and write head elements. A first group of read and write heads is configured to perform in a forward direction of movement of the magnetic tape and a second group of read and write heads is configured to perform in a reverse direction of movement of the magnetic tape. One of the modules contains an equal number of forward read heads and reverse write heads and the other of the modules contains an equal number of reverse read heads and forward write heads, to provide decoupling of reading and writing functions and to enable servoing by a given read element of a write element associated therewith. Asymmetry of the magnetic recording head is provided by offsetting leads to the read elements in a given module from leads to said write elements in the same module, while maintaining orthogonality between read and write element leads near the read and write elements. The asymmetry minimizes both inductive and capacitive feedthrough into adjacent readers. As a consequence, noise produced during the writing process is reduced, providing an improved signal-to-noise ratio and thereby permitting same gap servoing.

摘要翻译： 提供了一种用于在磁带上记录信息并从其读取记录信息的多元素读写磁记录头。 记录头包括相等数量的相关联的读取元件和写入元件，以形成包括读取和写入元件对的双隙记录头。 双隙记录头还包括第一模块和第二模块，第一和第二模块各自包括多个读写头元件。 第一组读写头被配置为在磁带的向前移动方向上执行，并且第二组读写头被配置为在磁带的相反移动方向上执行。 其中一个模块包含相同数量的正向读取头和反向写入头，另一个模块包含相等数目的反向读取头和正向写入头，以提供读取和写入功能的去耦合，并使得能够通过给定的 读取与之相关联的写元件的元素。 通过将给定模块中的读取元件的引线偏移到同一模块中的引线到所述写入元件，同时保持读取和写入元件附近的读取和写入元件引线之间的正交性，来提供磁记录头的不对称性。 不对称性使电感和电​​容馈通最小化到相邻的读取器中。 因此，在写入处理期间产生的噪声减小，提供了改善的信噪比，从而允许相同的间隙伺服。

公开(公告)号：US06819528B1

公开(公告)日：2004-11-16

申请号：US09696557

申请日：2000-10-25

申请人： James C. Cates ,  Steven Trabert

发明人： James C. Cates ,  Steven Trabert

IPC分类号： G11B5265

CPC分类号： G11B5/584 ,  G11B5/00826 ,  G11B5/4893

摘要： A magnetic tape head assembly comprised of read and write elements and servo readers placed asymmetrically about the center of the head taken perpendicular to the direction of tape motion is provided. The tape head is capable of reading and writing in two directions of tape motion.

摘要翻译： 提供了一种包括读取和写入元件和伺服读取器的磁带头组件，其围绕垂直于磁带运动方向的磁头中心非对称地布置。 磁带头能够在磁带运动的两个方向上进行读写。

公开(公告)号：US06396659B1

公开(公告)日：2002-05-28

申请号：US08785802

申请日：1997-01-21

申请人： Makoto Nakayama

发明人： Makoto Nakayama

IPC分类号： G11B5265

CPC分类号： G11B5/2651 ,  G11B5/016 ,  G11B5/2657

摘要： In a magnetic head assembly for a flexible disk drive, a write/read head and an erase head are formed with grooves defining track widths only in I-shaped cores thereof. Erase track widths are dimensioned 53 &mgr;m to 63 &mgr;m each while a track width is dimensioned 125 &mgr;m to 135 &mgr;m. These dimensions correct the extension of magnetic fluxes from gaps. Hence, the assembly does not lower the reproduction output or erase the data of adjoining tracks, thereby insuring compatibility of magnetic recording media or disks.

摘要翻译： 在用于软盘驱动器的磁头组件中，写入/读取头和擦除头形成有仅在其I形芯中限定轨道宽度的槽。 擦除轨道宽度的尺寸为53mum至63mum，而轨道宽度的尺寸为125mum至135mum。 这些尺寸校正了来自间隙的磁通量的扩展。 因此，组件不会降低再现输出或擦除相邻轨道的数据，从而确保磁记录介质或磁盘的兼容性。

公开(公告)号：US06362934B1

公开(公告)日：2002-03-26

申请号：US09275564

申请日：1999-03-24

申请人： Geoffrey A. Hungerford ,  Robert B. Chesnutt

发明人： Geoffrey A. Hungerford ,  Robert B. Chesnutt

IPC分类号： G11B5265

CPC分类号： G11B5/4893 ,  G11B5/3103 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T29/49046 ,  Y10T29/49052

摘要： Reducing alignment errors between a read element and corresponding write elements permits narrower data tracks and, hence, greater data density on magnetic tape. A method for manufacturing a thin film tape head having multiple write elements and at least one read element corresponding to each write element is provided. Excess material is trimmed from each write element to align the write element with corresponding read elements. The excess material may be track trimmed using a focused ion beam.

摘要翻译： 读取元件与相应的写入元件之间的对准误差降低，使数据轨迹更窄，因此磁带上的数据密度更高。 提供了一种制造具有多个写入元件和至少一个与每个写入元件对应的读取元件的薄膜磁头的方法。 从每个写入元素修剪过多的素材以使写入元件与相应的读取元素对齐。 可以使用聚焦离子束来追踪多余的材料。

公开(公告)号：US06577469B2

公开(公告)日：2003-06-10

申请号：US10128100

申请日：2002-04-23

申请人： James Kennedy ,  Donna Jean Kaiser

发明人： James Kennedy ,  Donna Jean Kaiser

IPC分类号： G11B5265

CPC分类号： G11B5/4893 ,  G11B15/64

摘要： A variable width flat tape head for bi-directional contact recording and method for making the same has significant advantages over both traditional contoured tape heads and single width flat heads for contact recording applications. The variable width head and process disclosed herein allows for greater ease of manufacturing, efficient layout of the devices on thin film wafers and provides a significant cost reduction in the production of the head compared to traditionally contoured tape heads. In addition, the present invention reduces unnecessary surface area where the tape contacts the head, thus reducing tape wear and damage that is present in single width flat heads (where the tape is in contact uniformly across the tape width), thereby providing a concomitant improvement in tape wear and life. In addition, the head of the present invention is simpler and less costly to manufacture than comparable devices with distinct advantages to the magnetoresistive (“MR”) read element stripe height control process, device alignment and assembly processes, particularly with respect to traditionally contoured tape heads, which require more complex and expensive manufacturing operations to form the tape head profile.

公开(公告)号：US06477003B1

公开(公告)日：2002-11-05

申请号：US09525852

申请日：2000-03-15

申请人： Johannes J. W. Kalfs ,  Abraham Hoogendoorn

发明人： Johannes J. W. Kalfs ,  Abraham Hoogendoorn

IPC分类号： G11B5265

CPC分类号： G11B5/4886 ,  G11B5/00817 ,  G11B5/4893 ,  G11B5/5526 ,  G11B5/5565 ,  G11B5/5582 ,  G11B5/58 ,  G11B5/584 ,  G11B5/59605 ,  G11B5/59627 ,  G11B5/5965 ,  G11B5/59688 ,  G11B5/78 ,  G11B5/82 ,  G11B15/087 ,  G11B15/52 ,  G11B25/063 ,  G11B33/14

摘要： System for recording and/or reproducing information, medium for use in the system, and magnetic write head for formatting the medium. The invention relates to a system including a magnetic tape (310) formatted by way of a write head (360), and an apparatus incluiding a magnetic head unit (320) which is movable on a transverse direction (y) by way of an actuator. By way of the write head (360) the magnetic tape (310) has been provided with a pattern of servotracks ST101-ST127 which extend in a longitudinal direction (x). The odd-numbered servotracks contain a first servosignal and the even-numbered servotracks contain a second servosignal Sb which is phase opposition to the first servosignal. The servotracks ST103-ST113 and ST116-ST126 have a typical width W1 and form a group of two bands of N1 servotracks which are separated by a band of N2 servotracks ST114, ST115 having a typical width W2. The magnetic tape (310) is provided to cooperate with an apparatus including eight magnetic write heads (H31-H38). The actuator is controlled in response to the servosignals read by the heads. The center-to-center distance (p) between the magnetic write heads (H31-H38) is equal to four times the typical width W1 and, moreover, it holds that: N2=2, 4, 6 etc. and W2=(k+½)W1 or N2=1, 3, 5 etc. and W2=2k.W1, where k=1, 2 etc.

摘要翻译： 用于记录和/或再现信息的系统，用于系统的介质和用于格式化介质的磁写头。 本发明涉及一种包括通过写入头（360）格式化的磁带（310）的系统，以及一种包括磁头单元（320）的装置，该磁头单元可通过致动器在横向（y）上移动 。 通过写入头（360），磁带（310）已经设置有沿纵向方向（x）延伸的伺服轨道ST101-ST127的图案。 奇数伺服机构包含第一伺服信号，偶数伺服机构包含与第一伺服信号相反的第二伺服信号Sb。 伺服电机ST103-ST113和ST116-ST126具有典型的宽度W1，并形成由具有典型宽度W2的N2伺服磁带ST114，ST115的频带分离的N1个伺服磁带的一组两个频带。 提供磁带（310）以配合包括八个磁写头（H31-H38）的设备。 响应于头读取的伺服信号来控制致动器。 磁写头（H31-H38）之间的中心到中心距离（p）等于典型宽度W1的四倍，此外，它保持：N2 = 2,4,6等，W2 =（ k +½）W1或N2 = 1,3,5等，W2 = 2k.W1，其中k = 1,2等。

公开(公告)号：US06417989B1

公开(公告)日：2002-07-09

申请号：US09593329

申请日：2000-06-14

申请人： Kuo-Nan Yang

发明人： Kuo-Nan Yang

IPC分类号： G11B5265

CPC分类号： G11B5/3183 ,  G11B5/265 ,  G11B5/29 ,  G11B5/3103 ,  G11B5/313 ,  G11B5/3163

摘要： Read and write performance in a magnetic thin-film head is improved by forming a highly compact multiple-gap head with separate magnetic core and coil structures for a read head and a write head that are respectively designed to improve reading and writing performance. A thin film magnetic head includes a thin-film magnetic core including a read core portion and an interconnected write core portion, a thin-film read coil encircling the read core portion, and a thin-film write coil encircling the write core portion. The read core portion is separated by a read magnetic gap and the write core portion being separated by a write magnetic gap. The read gap and write gap are mutually combined in close proximity in abutting sections of the read core portion and the write core portion respectively so that a magnetic medium is accessible to the read gap and the write gap simultaneously.

摘要翻译： 磁性薄膜头的读写性能通过形成具有独立的磁芯和线圈结构的高度紧凑的多间隙磁头来提高，读取头和写头分别设计成提高读写性能。 薄膜磁头包括：包括读取芯部分和互连写入芯部分的薄膜磁芯，环绕读取芯部的薄膜读取线圈和环绕写入芯部分的薄膜写入线圈。 读取的磁芯部分被读取磁隙分开，并且写入磁芯部分被写入磁隙隔开。 读取间隙和写入间隙分别相互组合在读取芯部分和写入核心部分的邻接部分中，使得磁性介质可以同时访问读取间隙和写入间隙。