公开(公告)号：WO1983003918A1

公开(公告)日：1983-11-10

申请号：PCT/US1983000260

申请日：1983-02-25

Applicant: EASTMAN KODAK COMPANY

Inventor： EASTMAN KODAK COMPANY ,  McCLURE, Richard, J. ,  BAGBY, John, F. ,  JEFFERS, Frederick, J.

IPC: G11B05/221

CPC classification number: G11B5/23 ,  G11B5/1878 ,  G11B5/232

Abstract: The general concept of the invention is to coat, at least, the trailing pole face of a pair of ferrite pole faces (26), which define a transducer gap, with high-saturation material (30) such as Sendust. By so structuring a head with a gap liner, not only is the critical part of its gap defined by material having a high saturation magnetization -- and thus such head will no be easily subject to critical pole tip saturation of its trailing pole face -- but also (1) the long-wearing ferrite will desirably constitute the principal head part that slidingly coacts with a recording medium, (2) no high reluctance glue line will exist between a core and its tips, and (3) the signal flux will enter the gap region uniformly over the surface of the gap, thereby providing enhanced high frequency efficiency.

Abstract translation: 本发明的一般概念是至少涂覆一对铁氧体磁极面（26）的尾极面，这些铁氧体磁极面（26）与高饱和材料（30）如Sendust形成换能器间隙。 通过如此构造具有间隙衬垫的头部，不仅由具有高饱和磁化强度的材料限定其间隙的关键部分，因此这样的头部不会容易受到其后极面的临界极尖饱和， 而且（1）长时间磨损的铁氧体将理想地构成与记录介质滑动共同作用的主要头部，（2）芯与其尖端之间不会存在高磁阻线，（3）信号通量将 在间隙的表面上均匀地进入间隙区域，从而提供增强的高频效率。