公开(公告)号：EP0152326A3

公开(公告)日：1985-09-18

申请号：EP85400136

申请日：1985-01-28

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE Etablissement de Caractère Scientifique Technique et Industriel

Inventor： Lazzari, Jean-Pierre

IPC: G11B05/127 ,  G11B05/31 ,  G11B05/17 ,  G11B05/11

CPC classification number: G11B5/3183 ,  G11B5/127 ,  G11B5/17 ,  G11B5/3106 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49064

公开(公告)号：WO1998011540A1

公开(公告)日：1998-03-19

申请号：PCT/US1997014882

申请日：1997-08-22

Applicant: AMPEX CORPORATION

Inventor： AMPEX CORPORATION ,  VARIAN, George, R.

IPC: G11B05/11

CPC classification number: G11B5/39 ,  G11B5/11 ,  G11B5/313 ,  G11B5/3143 ,  G11B2005/0002 ,  H01F27/367

Abstract: A shielded magnetic core structure is disclosed that is particularly well suited for use in magnetic read and write heads adapted for narrow track, short wavelength magnetic recording systems, and for transformers of high performance, wide band application. The magnetic cores use novel field confinement structures to reduce or eliminate leakage magnetic paths which normally do not link the head gap or do not link the transformer windings. This shielding arrangement substantially improves the performance of such devices, as compared to conventional, unshielded heads and transformers. Embodiments involving toroidal cores, thin film heads, and MR heads are disclosed, along with high performance, wide band transformer structures.

Abstract translation: 公开了一种屏蔽磁芯结构，其特别适用于适用于窄轨，短波长磁记录系统的磁读写头以及用于高性能，宽带应用的变压器。 磁芯使用新颖的场约束结构来减少或消除通常不连接磁头间隙或不连接变压器绕组的泄漏磁路。 与传统的非屏蔽磁头和变压器相比，这种屏蔽装置大大改善了这种装置的性能。 公开了涉及环形磁芯，薄膜磁头和MR磁头的实施例，以及高性能的宽带变压器结构。