公开(公告)号：US3881191A

公开(公告)日：1975-04-29

申请号：US25511672

申请日：1972-05-19

Applicant: IBM

Inventor： POTTER ROBERT I ,  WARNER MICHAEL W

IPC: G11B5/11 ,  G11B5/17 ,  G11B5/187 ,  G11B5/23 ,  G11B5/265 ,  G11B5/31 ,  G11B5/39 ,  G11B5/27

CPC classification number: G11B5/39 ,  G11B5/17 ,  G11B5/187 ,  G11B5/2652 ,  G11B5/31

Abstract: A magnetic head is disclosed having an inner magnetic core and an outer magnetic core that is magnetically spaced about the inner core so as to form a three transducer gap structure. A flux sensing means is linked solely with the inner core. The fringing fields under the two outer transducer gaps have the same direction and are of smaller magnitude and in the opposite direction than the fringing field under the central transducer gap. The composite fringing field contributed by this structure results in a narrow pulse width and is useful in high-resolution high-recording density systems.

Abstract translation: 公开了一种磁头，其具有内磁芯和外磁心，该磁芯与内磁芯隔开间隔开，以形成三个换能器间隙结构。 磁通感测装置仅与内芯连接。 两个外部换能器间隙下的边缘区域具有与中心换能器间隙下方的边缘场相同的方向并且具有较小的幅度和相反的方向。 由该结构贡献的复合边缘场导致窄的脉冲宽度，并且在高分辨率高记录密度系统中是有用的。

公开(公告)号：CA1157147A

公开(公告)日：1983-11-15

申请号：CA356813

申请日：1980-07-23

Applicant: IBM

Inventor： ROOT RONALD R ,  WARNER MICHAEL W ,  WATROUS ROBERT B

IPC: G11B21/21 ,  G11B5/60 ,  G11B17/32 ,  G11B5/48 ,  G11B21/20

Abstract: A flying magnetic head assembly includes a head suspension formed with spaced resilient sections for providing opposing angular motions, so that the head slider mounted to the suspension maintains a parallel relation to the surface of a magnetic medium, as the suspension and slider are moved aerodynamically into flying transducing relation with the medium. SA979012

公开(公告)号：CA1033455A

公开(公告)日：1978-06-20

申请号：CA193622

申请日：1974-02-27

Applicant: IBM

Inventor： WARNER MICHAEL W

IPC: G11B5/127 ,  G11B5/187 ,  G11B5/60 ,  G11B21/21

Abstract: A magnetic head assembly is disclosed for transducing information upon a relatively moving magnetic recording surface while flying thereover and that starts and stops in contact with the recording surface. The assembly comprises a magnetic slider body including three downwardly depending longitudinal rails that are laterally spaced apart, the bottom surfaces of the two outside rails forming an air bearing surface, and a magnetic core longitudinally aligned with the center rail so as to define a transducing gap. The transducing gap is located at the roll axis of the assembly such that the air bearing developed during relative movement maintains the gap at a substantially constant distance from the recording surface even during rolling motion of the assembly.