公开(公告)号：WO1996002052A1

公开(公告)日：1996-01-25

申请号：PCT/US1995008549

申请日：1995-07-07

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  McNEAL, Michael ,  MATHEWS, Harlan

IPC: G11B05/127

CPC classification number: G11B5/024 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/23 ,  G11B2005/0029

Abstract: A magnetic head (10) vertically records information on a disk (12). The head (10) has a single pole (16) having a pair of erase band segments (24) which extend from a center pole section (26). When the head is writing information, the erase band segments (24) create erase bands (34) at the outer edges of the track (30) by not fully magnetizing the disk and/or increasing the azimuth angle of the magnetized outer edges. The azimuth angle can be increased by constructing the erase band segments (24) to extend at an angle from the center pole section (26). The reduction in field strength in the outer track edges can be accomplished by making the erase band segments (24) thinner to cause a saturation of the outer magnetic field. The weaker, angled outer track portions (34) do not generate a significant magnetic field in a head located on an adjacent track.

Abstract translation: 磁头（10）在盘（12）上垂直记录信息。 磁头（10）具有单极（16），其具有从中心极部分（26）延伸的一对擦除带段（24）。 当磁头正在写信息时，擦除带段（24）通过不完全磁化磁盘和/或增加磁化的外边缘的方位角，在轨道（30）的外边缘处产生擦除带（34）。 可以通过构造擦除带段（24）从中心极部分（26）以一定角度延伸来增加方位角。 可以通过使擦除带段（24）更薄以使外部磁场饱和来实现外轨道边缘中的场强的减小。 较弱的成角度的外轨道部分（34）在位于相邻轨道上的头部中不产生显着的磁场。

公开(公告)号：WO1990012390A1

公开(公告)日：1990-10-18

申请号：PCT/EP1990000102

申请日：1990-01-18

Applicant: SIEMENS AKTIENGESELLSCHAFT ,  GRÄBNER, Günther ,  SCHEWE, Herbert

Inventor： SIEMENS AKTIENGESELLSCHAFT

IPC: G11B05/127

CPC classification number: G11B5/1278 ,  G11B5/00

Abstract: The thin-film magnetic recording head of the invention is designed to be passed over the storage layer (S) of a recording medium (2) and to magnetize it in the vertical plane. The head includes two outer magnet limbs (9,11) plus, located between them, a central magnet limb (10), each magnet limb having a magnetic pole (P1, P2, P3). The magnetic fields arising at the magnetic poles (P1, P2, P3) produce, at the surface of the storage layer (S), pre-determined maximum field strengths (H1, H2, H3). According to the invention, ¦H1¦ > ¦H2¦ > ¦H3¦ applies, only the maximum field strength H1 associated with the leading magnet limb (9) being capable of at least nearly entirely remagnetizing the storage layer (S) over its whole depth.

Abstract translation: 本发明的薄膜磁记录头被设计成通过记录介质（2）的存储层（S）并在垂直平面内磁化。 头部包括位于它们之间的两个外磁体肢体（9,11），中心磁体臂（10），每个磁体肢体具有磁极（P1，P2，P3）。 在磁极（P1，P2，P3）处产生的磁场在存储层（S）的表面产生预定的最大场强（H1，H2，H3）。 根据本发明，只有与引导磁体肢体（9）相关联的最大场强H1能够至少几乎完全地使存储层（S）整体再磁化 深度。

公开(公告)号：WO1988002166A1

公开(公告)日：1988-03-24

申请号：PCT/JP1987000668

申请日：1987-09-09

Applicant: NIPPON HOSO KYOKAI ,  KABUSHIKI KAISHA SANKYO SEIKI SEISAKUSHO ,  NUMAZAWA, Junji ,  YONEDA, Yoshiro ,  ARUGA, Fusayoshi

Inventor： NIPPON HOSO KYOKAI ,  KABUSHIKI KAISHA SANKYO SEIKI SEISAKUSHO

IPC: G11B05/127

CPC classification number: G11B5/1278

Abstract: Improvements in the vertical magnetic recording/reproducing head of the type in which a main magnetic pole and an auxiliary magnetic pole are arranged as a unitary structure on one side of a magnetic recording medium. Problems are solved in relation to false pulses in the output signals and change in the level, contributing to improving the sensitivity for recording and reproduction. The magnetic head is used for vertical VTR's. The vertical magnetic recording/reproducing head of the invention comprises a support block which consists of a main magnetic pole, a nonmagnetic block which holds said main magnetic pole to form a surface opposed to the magnetic recording medium, and an auxiliary magnetic pole block which supports part of said main magnetic pole and which supports said nonmagnetic block; and a magnetic block provided on the side surface of said support block in the direction of track width. The region opposed to the magnetic recording medium is constituted by the main magnetic pole, nonmagnetic block and magnetic block.

公开(公告)号：WO1986004445A1

公开(公告)日：1986-07-31

申请号：PCT/US1986000134

申请日：1986-01-22

Applicant: DIGITAL EQUIPMENT CORPORATION

Inventor： DIGITAL EQUIPMENT CORPORATION ,  MALLARY, Michael, L.

IPC: G11B05/127

CPC classification number: G11B5/02 ,  G11B5/00 ,  G11B5/1278 ,  G11B5/315 ,  Y10T74/20822

Abstract: A downstream magnetic shield (21) which is integrally formed with a write pole section (19) to make up a magnetic recording head. The shield and the write pole tip (27) are located relatively close together, providing a small gap there between, so that magnetic flux (39) which fringes from the magnetic write pole tip is intercepted by, or has an incentive to pass directly to, the shield. Accordingly such fringing flux does not pass through the recording medium, and hence if a data bit has been written into the recording medium its dipole identity will not be weakened by the fringing flux of a subsequent data bit being written into the magnetic recording medium. In addition the present device provides magnetic flux shielding means (43, 53) for the tracks along side of the track being presently written so that the fringing flux does not disturb the dipole identity of the bits recorded in the adjacent tracks.

Abstract translation: 与写磁极部分（19）整体形成以组成磁记录头的下游磁屏蔽（21）。 屏蔽和写入磁极尖（27）位于相对靠近的位置处，在其间形成小的间隙，使得从磁性写入磁极尖端流过的磁通（39）被截取或有动机直接传递到 ， 护盾。 因此，这样的边缘通量不会通过记录介质，因此如果将数据位写入记录介质中，则其随后的数据位写入磁记录介质的边缘通量将不会削弱偶极识别。 此外，本装置为当前写入的磁道侧面的轨道提供磁通屏蔽装置（43,43），使得边缘磁通不会干扰记录在相邻轨道中的位的偶极同一性。

公开(公告)号：WO1986003616A1

公开(公告)日：1986-06-19

申请号：PCT/JP1985000663

申请日：1985-12-03

Applicant: OLYMPUS OPTICAL CO., LTD. ,  IMAMURA, Tatsuo ,  YOSHIMORI, Hiroyuki ,  FUKUDA, Yoshio ,  ABE, Hiroyuki ,  WATANABE, Hiroyuki ,  KOIKE, Makoto

Inventor： OLYMPUS OPTICAL CO., LTD.

IPC: G11B05/127

CPC classification number: G11B5/1278

Abstract: A vertical magnetic head which effects the recording and reproduction for a vertical magnetic recording medium, the vertical magnetic head being located close thereto or in slidable contact thereto. In order to prevent the magnetic field for recording or reproduction from being affected by the external magnetic field, a main magnetic pole for the vertical magnetic head is surrounded by a block of a magnetic material having a high permeability to provide magnetic shielding.

公开(公告)号：WO1986000740A1

公开(公告)日：1986-01-30

申请号：PCT/JP1985000381

申请日：1985-07-05

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. ,  SANO, Nobuya

Inventor： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

IPC: G11B05/127

CPC classification number: G11B5/245 ,  G11B5/127 ,  G11B5/187 ,  G11B5/23

Abstract: A magnetic head adapted to effect high-density magnetic recording and reproduction. A first core (1) has a saturation magnetic flux density which is different from a saturation magnetic flux density of a second core (6), i.e., the second core (6) has a saturation magnetic flux density smaller than that of the first core (1). Or, a material having a small saturation magnetic flux density is used for a portion of the second core (17) facing a gap (4), or the gap (4) is formed obliquely to the direction of depth thereof such that the first core (1) and the second core (26) will have different sectional areas at the ends facing the gap (4). Thus, the second core (6), (17) or (26) is saturated in the portion near the gap (4) faster than the first core (1), making it possible to obtain an optimum effective gap length at the time of recording and reproduction.

Abstract translation: 适于实现高密度磁记录和再现的磁头。 第一芯（1）具有不同于第二芯（6）的饱和磁通密度的饱和磁通密度，即，第二芯（6）的饱和磁通密度小于第一芯 （1）。 或者，对于面向间隙（4）的第二芯（17）的一部分使用具有小饱和磁通密度的材料，或者间隙（4）相对于其深度方向倾斜地形成，使得第一芯 （1）和第二芯（26）在面向间隙（4）的端部处将具有不同的截面积。 因此，第二芯（6），（17）或（26）在间隙（4）附近的部分中比第一芯（1）更快地饱和，使得可以获得最佳有效间隙长度 录制和复制。

公开(公告)号：WO1985004278A1

公开(公告)日：1985-09-26

申请号：PCT/JP1985000136

申请日：1985-03-20

Applicant: OLYMPUS OPTICAL CO., LTD. ,  IMAMURA, Tatsuo ,  YAMAMOTO, Hiroyuki

Inventor： OLYMPUS OPTICAL CO., LTD.

IPC: G11B05/127

CPC classification number: G11B5/1278

Abstract: A vertically magnetized magnetic head which magnetizes a magnetic recording medium in the direction of thickness thereof. A main magnetic pole film consisting of a soft magnetic film having high permeability is held by first and second junction blocks made of a non-magnetic material. A laminate of layers formed by alternately laminating a highly permeable soft magnetic layer and a non-magnetic layer is provided in at least one of the above-mentioned blocks at a position where it comes into contact with said highly permeable soft magnetic film, being separated by a predetermined distance from a position at which the block is in sliding contact with the magnetic recording medium.

公开(公告)号：WO1985002706A1

公开(公告)日：1985-06-20

申请号：PCT/HU1984000061

申请日：1984-12-13

Applicant: KARMAN, Péter ,  VASS, László ,  ZSOM, Gyula

IPC: G11B05/127

CPC classification number: G11B5/313

Abstract: Integrated magnetic head which can be used in data storage units or in other digital devices cooperating with magnetic data carrier media, as tapes or discs. The magnetic head comprises a substrate (15) with a holding surface (13) perpendicular to the plane of the magnetic data carrier, a head unit (10) made in form of a layer on the holding surface (13) and two input/output terminals (1, 2) wherein the head unit (10) comprises a frontal stripe (11) arranged along the frontal face (14) and connected electrically to the two input/output terminals (1, 2). The proposed integrated magnetic head ensures a high effective conversion of the magnetic and electrical energy respectively into electrical and magnetic energy without the disadvantages following from the use of air gaps in the known solutions.

Abstract translation: 可用于数据存储单元或与磁数据载体介质协作的其他数字设备中的集成磁头，作为磁带或光盘。 磁头包括具有垂直于磁数据载体的平面的保持表面（13）的基板（15），在保持表面（13）上形成为层的形式的头单元（10）和两个输入/输出 端子（1,2），其中所述头单元（10）包括沿着所述正面（14）布置并与所述两个输入/输出端子（1,2）电连接的正面条纹（11）。 所提出的集成磁头确保磁性和电能分别高效地转换成电能和磁能，而没有使用已知解决方案中使用气隙的缺点。

公开(公告)号：WO1985002479A1

公开(公告)日：1985-06-06

申请号：PCT/US1984001272

申请日：1984-08-13

Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

Inventor： MINNESOTA MINING AND MANUFACTURING COMPANY ,  GERBER, Joel, Arthur ,  SIEVERS, Jerry, Albert

IPC: G11B05/127

CPC classification number: G11B5/187 ,  G11B5/127 ,  G11B5/1278

Abstract: A magnetic pole head for recording and playback. Its features, as illustrated in (Fig. 1) are: a high permeability core (1), a magnetic field producing means (3), and an acute angle PHI between the bottom surface and side surface at the trailing portion of the head (i.e. the portion which influences the recording medium (5) last). It has been found that this improved pole head significantly increases the derivative of vertical magnetic field intensity with respect to lateral distance. This increase in the rate at which vertical field intensity changes will allow for higher density perpendicular recording than is feasible with conventional vertical heads.