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11. 发明公开

EP0468113A1 Multi-track magnetic head 失效
标题翻译： Mehrspur-Magnetkopf。
公开(公告)号：EP0468113A1
公开(公告)日：1992-01-29
申请号：EP90308185.9
申请日：1990-07-26
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Yohda, Hiroshi
IPC分类号： G11B5/105 , G11B5/53
CPC分类号： G11B5/105 , G11B5/53
摘要： The present invention relates to the structure of a multi-track head in which more than one head chip is attached onto one head base. The head chips (3) are respectively attached onto the divided front end parts of the head base (1), and the relative positions of the front end parts of the head base are adjusted so that the positions of gap ends in the head chips are set precisely to a predetermined value, before the head chips are fixed. For these reasons, it is not necessary to adjust the position of each head chip after the head chips being arranged in a rotary cylinder. It is therefore possible to obtain a head having a size which can be accurately adjusted, regardless of the size of the head chip, even when the head chip is extremely small.
摘要翻译：本发明涉及多轨头的结构，其中多个头芯片附接到一个头基座上。头部片（3）分别安装在头部基座（1）的分割前端部上，并且调节头部基座的前端部分的相对位置，使得头部芯片中的间隙端部的位置为在头部芯片固定之前精确地设定为预定值。由于这些原因，在头部芯片布置在旋转圆筒中之后，不需要调整每个头部芯片的位置。因此，无论头芯片的尺寸如何，即使头部芯片非常小，也可以获得能够精确调整尺寸的头部。

12. 发明公开

EP0460702A2 Magnetic head 失效
标题翻译： Magnetkopf。
公开(公告)号：EP0460702A2
公开(公告)日：1991-12-11
申请号：EP91109364.9
申请日：1991-06-07
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Mizoh, Yoshiaki , Yohda, Hiroshi
IPC分类号： G11B5/48 , G11B5/53 , G11B5/187
CPC分类号： G11B5/531 , G11B5/187 , G11B5/4893
摘要： A multitrack magnetic head (4) for use with a magnetic tape in a magnetic recording and reproducing system includes at least two magnetic head tips (1,2) disposed adjacent to each other and movable with respect to the magnetic tape. The head tips include a leading head tip (1) for initial sliding contact with the magnetic tape and a trailing head tip (2) for subsequent sliding contact with the magnetic tape. The leading head tip (1) is made of a material whose wear resistance is greater than that of a material of which said trailing head tip (2) is made. The head tips are held in good sliding contact with the magnetic tape for better recording and reproducing characteristics.
摘要翻译：在磁记录和再现系统中与磁带一起使用的多轨磁头（4）包括彼此相邻设置并相对于磁带可移动的至少两个磁头尖端（1,2）。头部尖端包括用于与磁带初始滑动接触的前导头部尖端（1）和用于随后与磁带滑动接触的拖尾头部末端（2）。前端头部（1）由耐磨性大于制造后端头端（2）的材料的材料制成。头尖与磁带保持良好的滑动接触，以获得更好的记录和再现特性。

13. 发明公开

EP0352889A2 Magnetic head and method for manufacturing same 失效
标题翻译： Magnetkopf und Herstellungsverfahren。
公开(公告)号：EP0352889A2
公开(公告)日：1990-01-31
申请号：EP89305798.4
申请日：1989-06-08
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Ihara, Keita , Yohda, Hiroshi , Sawai, Eisuke , Takahashi, Ken
IPC分类号： G11B5/187
CPC分类号： G11B5/127 , G11B5/1875
摘要： There is disclosed herein a magnetic head comprising a ring-like magnetic core composed of first and second magnetic core halves made of a ferrite and held in abutment against each other so as to form a magnetic gap therebetween and an elongated tape-contact surface extending across the magnetic gap. The magentic core has in the tape-contact surface a channel formed to as to extend in the direction across the magnetic gap and the channel is filled with a magnetic metal material having a high-saturation magnetization. Preferably, the channel has a substantially V-shaped cross section. The magenetic gap exposed on the tape-contact surface is surrounded by the magnetic metal material and non-magnetic glass members provided at both ends of the magnetic gap. The non-magnetic glass members are provided so that the track width is constant from the tape-contact surface to an upper end of a winding hole of the ring-like magnetic core.
摘要翻译：这里公开了一种磁头，其包括由铁氧体制成的第一和第二磁芯半部构成的环状磁芯，并且彼此抵接以在其间形成磁隙，并且延伸穿过磁隙。磁性芯在带接触表面中具有形成为沿着穿过磁隙的方向延伸的通道，并且通道填充有具有高饱和磁化强度的磁性金属材料。优选地，通道具有大致V形的横截面。在磁带接触表面露出的磁隙被磁性金属材料和设置在磁隙的两端的非磁性玻璃构件包围。非磁性玻璃构件被设置成使得轨道宽度从环形磁芯的带接触表面到绕组孔的上端恒定。

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