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1.发明公开Magnetic head for stable pole tip to tape contact pressure despite head wear and tape tension variation 失效用于稳定点的磁头提示带接触压力DESPITE HEAD WEAR和TAPE张力变化
公开(公告)号：EP0550890A3
公开(公告)日：1993-10-20
申请号：EP92121946.5
申请日：1992-12-23
Applicant: TANDBERG DATA A/S
Inventor： Strand, Steinar J.
CPC classification number: G11B15/62 , G11B5/105 , G11B5/1871 , G11B5/4893
Abstract: A magnetic head which contacts the magnetic tape (11) comprises a ferromagnetic body (12). A recess (26) is provided in this ferromagnetic body (12). A ferromagnetic core (9) has pole tips (9a,9b) which are located in the recess and which are arranged for contact with the magnetic tape. A non-magnetic material (18,20,21,22) is arranged along each side of the magnetic core pole tips in the recess. Relative hardnesses of the ferromagnetic body, ferromagnetic core pole tips, and non-magnetic material are chosen so that as the tape (11) wears away on contact surfaces of the magnetic core pole tips, non-magnetic material, and ferromagnetic body, the core pole tips (9a,9b) protrude relative to adjacent portions of the ferromagnetic body and the non-magnetic material so that the tape rides on the protruding pole tips of the core. A radius of curvature at the contact surface of the magnetic core pole tips prior to wearing of the pole tips is chosen such that it is smaller than a natural radius of bending of the tape.
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2.发明授权Magnetic head for stable pole tip to tape contact pressure despite head wear and tape tension variation 失效磁头尽管Kopfverschleiss和磁带张力变化的极尖和带材之间的稳定的接触压力
公开(公告)号：EP0550890B1
公开(公告)日：1997-04-09
申请号：EP92121946.5
申请日：1992-12-23
Applicant: TANDBERG DATA A/S
Inventor： Strand, Steinar J.
CPC classification number: G11B15/62 , G11B5/105 , G11B5/1871 , G11B5/4893
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3.发明公开Magnetic head for stable pole tip to tape contact pressure despite head wear and tape tension variation 失效Magnetkopffürstabilizationen Kontaktdruck zwischen Polspitze und Band trotz Kopfverschleiss undBandspannungveränderung。
公开(公告)号：EP0550890A2
公开(公告)日：1993-07-14
申请号：EP92121946.5
申请日：1992-12-23
Applicant: TANDBERG DATA A/S
Inventor： Strand, Steinar J.
CPC classification number: G11B15/62 , G11B5/105 , G11B5/1871 , G11B5/4893
Abstract: A magnetic head which contacts the magnetic tape (11) comprises a ferromagnetic body (12). A recess (26) is provided in this ferromagnetic body (12). A ferromagnetic core (9) has pole tips (9a,9b) which are located in the recess and which are arranged for contact with the magnetic tape. A non-magnetic material (18,20,21,22) is arranged along each side of the magnetic core pole tips in the recess. Relative hardnesses of the ferromagnetic body, ferromagnetic core pole tips, and non-magnetic material are chosen so that as the tape (11) wears away on contact surfaces of the magnetic core pole tips, non-magnetic material, and ferromagnetic body, the core pole tips (9a,9b) protrude relative to adjacent portions of the ferromagnetic body and the non-magnetic material so that the tape rides on the protruding pole tips of the core. A radius of curvature at the contact surface of the magnetic core pole tips prior to wearing of the pole tips is chosen such that it is smaller than a natural radius of bending of the tape.
Abstract translation: 公开了一种改进的磁头，即使磁头磨损和磁带张力变化也能稳定的极尖到磁带的接触压力。 与磁带接触的磁头包括铁磁体。 在该铁磁体中设置凹部。 铁磁芯具有位于凹部中并且被布置成与磁带接触的极尖。 非磁性材料沿凹槽中的磁芯极尖的每一侧布置。 选择铁磁体，铁磁芯极尖和非磁性材料的相对硬度，使得随着磁带在磁芯极尖，非磁性材料和铁磁体的接触表面上磨损，芯极尖突出 相对于铁磁体和非磁性材料的相邻部分，使得磁带骑在磁芯的突出极尖上。 选择在磁极尖部磨损之前的磁芯极尖端的接触表面处的曲率半径，使得其小于磁带的自然弯曲半径。
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