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    • 3. 发明授权
    • Thin film magnetic head
    • 薄膜磁头
    • US5157569A
    • 1992-10-20
    • US704226
    • 1991-05-22
    • Noriyuki KumasakaKenkichi InadaIkuo ShintaSigeo ImaiSouzou Sasajima
    • Noriyuki KumasakaKenkichi InadaIkuo ShintaSigeo ImaiSouzou Sasajima
    • G11B5/127G11B5/187
    • G11B5/1871
    • A magnetic head having a pair of nonmagnetic core base bodies coupled to each other in such a manner that amorphous magnetic alloy films are applied to their abutment surfaces and a gap layer is interposed in a magnetic gap of the head, the films applied to the bodies being made abut against each other at their end edge surfaces each of which has a width larger than its film thickness, and at least one of the bodies having a coil winding groove formed at a portion at which the bodies are coupled to each other. Surface layer portions of each of the bodies, with which a magnetic tape comes into contact, are removed along a direction in which the magnetic tape moves, to a depth which is substantially the same as the depth of the gap while leaving a widthwise portion, which is the same as the track width defined by the width of contact between the two end edge surfaces of the films, at the widthwise center of the bodies, two recesses which are formed by removing the surface layer portions being filled with 2MgO--SiO.sub.2 or MgO--SiO.sub.2, and another amorphous magnetic alloy film is applied to the inner surface of the coil winding groove which defines a coil winding aperture and the latter film is integrally continued to the former films.
    • 一种具有一对非磁性芯基体的磁头,其以非磁性合金膜施加到其邻接表面并且将间隙层插入到磁头的磁隙中的方式彼此连接,所述膜施加到主体 在它们的端部边缘表面彼此抵接,每个端部边缘具有大于其膜厚度的宽度,并且至少一个主体具有形成在主体彼此连接的部分处的线圈缠绕槽。 磁带接触的每个主体的表面层部分沿着磁带移动的方向被移除到与间隙的深度基本相同的深度,同时留下宽度方向部分, 其与由膜的两个端边缘表面之间的接触宽度限定的轨道宽度相同,在主体的宽度方向中心处,通过去除填充有2MgO-SiO 2的表面层部分形成的两个凹部 MgO-SiO 2和另一种非晶磁性合金膜施加到限定线圈卷绕孔的线圈卷绕槽的内表面,并且后者的膜与前一个膜一体地连续。
    • 5. 发明授权
    • Magnetic recording and reproducing apparatus and method and thin film magnetic head used therein
    • 磁记录和再现装置和方法以及其中使用的薄膜磁头
    • US07092187B2
    • 2006-08-15
    • US10633719
    • 2003-08-05
    • Toshio TsuchiyaKenkichi InadaAkihisa Obata
    • Toshio TsuchiyaKenkichi InadaAkihisa Obata
    • G11B15/14
    • G11B5/3948G11B5/0086G11B5/00865G11B5/00878G11B5/3106G11B5/3903G11B5/3951G11B5/3967G11B5/4893G11B5/4976G11B5/534G11B15/125G11B15/467
    • The present invention provides a magnetic recording and reproducing apparatus, a magnetic recording and reproducing method, and a thin film magnetic head that enable a good contact between elements and a recording medium with a reduced track pitch even if the number of head channels is increased, thereby realizing high recording density and high transfer rate.At least one multitrack write head having N (N is an integer of 2 or more) write elements arranged along a track width direction in an integral fashion and at least one multitrack read head having L (L is an integer equal to or more than N) read elements arranged along the track width direction in an integral fashion are formed on the rotary drum. The multitrack write head writes signals to a group of N tracks aligned parallel on the magnetic tape during one rotation of the rotary drum, and the multitrack read head reads the group of N signal tracks by the use of any one of the L read elements.
    • 本发明提供了一种磁记录和再现装置,磁记录和再现方法以及薄膜磁头,即使磁头通道的数量增加,也能够实现元件与轨道间距减小的记录介质之间良好的接触, 从而实现高记录密度和高传输速率。 至少一个具有N(N是2或更大的整数)的写入元件的写入元件至少以一个整体的方式被布置在轨道宽度方向上,并且至少一个多轨读取头具有L(L是等于或大于N的整数) )读取沿着轨道宽度方向排列的元件形成在旋转滚筒上。 多轨写入头在旋转磁鼓的一个旋转期间将信号写入与磁带并行排列的一组N个磁道,并且多轨读取头通过使用L个读取元件中的任一个读取N个信号磁道组。