-
公开(公告)号：EP0328104B1
公开(公告)日：1996-05-22
申请号：EP89102242.8
申请日：1989-02-09
CPC分类号： G11B5/127 , G11B5/1871 , Y10T29/49046 , Y10T29/49057 , Y10T29/49067
-
公开(公告)号：EP0328104A3
公开(公告)日：1992-01-08
申请号：EP89102242.8
申请日：1989-02-09
CPC分类号： G11B5/127 , G11B5/1871 , Y10T29/49046 , Y10T29/49057 , Y10T29/49067
摘要： A magnetic head comprises a pair of magnetic core halves (1a, 1b), which are abutted with each other through a nonmagnetic material to define a magnetic gap (2), and ferromagnetic thin films (3a, 3b). The magnetic core halves (1a, 1b), which are formed of ferromagnetic oxide, have gap forming surfaces to be abutted with each other. The ferromagnetic metal thin films (3a, 3b) are selectively formed on the gap forming surfaces of the pair of magnetic core halves (1a, 1b). A ferromagnetic thin film (3b) is so formed that portion (12b, 12c, 12d) to be provided with a track width regulating groove (13b), a coil groove (13c) or a joining member receiving groove (13d) is exposed within a gap forming surface of one magnetic core half member (7b). Another ferromagnetic thin film (3a) is so formed that, in a gap forming surface of another magnetic core half member (7a), a portion (12e, 12f) opposite to the coil groove (13c) or the joining member receiving groove (13d) to be provided in the gap forming surface of the magnetic core half member (7b) is exposed. These ferromagnetic thin films (3a, 3b) are selectively formed by ion beam etching. Grooves (13b, 13c, 13d) are provided in one magnetic core half (1b) by mechanical working through a dicing saw or the like.
-
公开(公告)号：EP0299480B1
公开(公告)日：1997-02-26
申请号：EP88111328.6
申请日：1988-07-14
CPC分类号： G11B5/1874 , G11B5/1878
-
公开(公告)号：EP0227920B1
公开(公告)日：1993-09-01
申请号：EP86115344.3
申请日：1986-11-05
发明人： Okuda, Hiroyuki , Doi, Masaru , Shimizu, Yoshiaki , Yamano, Takao , Ino, Kazuo , Ishihara, Koso
CPC分类号： G11B5/4893 , G11B5/0086 , G11B5/024 , G11B5/127 , G11B5/53
-
公开(公告)号：EP0378214A1
公开(公告)日：1990-07-18
申请号：EP90100529.8
申请日：1990-01-11
发明人： Ogura, Takashi , Shimizu, Yoshiaki , Okuda, Hiroyuki , Yamano, Takao , Ino, Kazuo , Ishihara, Kousou , Shimizu, Tsukasa
CPC分类号： G11B5/1878
摘要： In a magnetic head, a pair of magnetic core halves (9a, 9b) are opposed to each other with a non-magnetic material (13) such as SiO₂ interposed therebetween to form a magnetic gap (12), the magnetic head having a pair of magnetic core halves (9a, 9b), interposed thin films (10) and ferromagnetic thin films (11). The magnetic core halves (9a, 9b) are formed of ferromagnetic oxide such as ferrite, and they have gap forming faces to be opposed to each other to form the magnetic gap (12). The interposed thin films (10) are formed of minute crystal grains such as SiO₂ on the gap forming faces. The ferromagnetic thin films (11) formed of ferromagnetic metal material such as sendust are formed on the interposed thin films (10). The ferromagnetic thin films (11) have crystal grains grown directly from the surface of the interposed thin films (10). Preferably, the ferromagnetic thin films (11) are polycrystalline substance having crystal grains with at least one of {110} face, {200} face and {211} face as a face approximately parallel to the gap forming faces. By the existence of the interposed thin films (10), the initial layer of ferromagnetic thin films can be prevented from being turned into amorphous, which was the cause of the pseudo gap generation.
摘要翻译： 在一个磁头中，一对磁芯半体（9a，9b）通过诸如SiO 2之类的非磁性材料（13）置于它们之间而彼此相对，以形成一个磁隙（12），该磁头具有一对 （9a，9b），插入的薄膜（10）和铁磁薄膜（11）。 磁芯半体（9a，9b）由铁氧体等铁磁性氧化物形成，并且它们具有彼此相对的间隙形成面以形成磁隙（12）。 插入的薄膜（10）由间隙形成面上的微小晶粒如SiO 2形成。 在插入的薄膜（10）上形成由诸如铁硅铝磁性金属材料形成的铁磁薄膜（11）。 铁磁薄膜（11）具有从插入的薄膜（10）的表面直接生长的晶粒。 优选地，铁磁薄膜（11）是具有{110}面，{200}面和{211}面中的至少一个作为与间隙形成面大致平行的面的晶粒的多晶物质。 通过插入的薄膜（10）的存在，可以防止铁磁薄膜的初始层变为无定形，这是伪间隙产生的原因。
-
公开(公告)号：EP0299480A3
公开(公告)日：1990-03-14
申请号：EP88111328.6
申请日：1988-07-14
CPC分类号： G11B5/1874 , G11B5/1878
摘要： A magnetic head comprises a pair of magnetic core halves (9a, 9b), heat-resistant thin films (10a, 10b) and ferromagnetic thin films (11a, 11b), the pair of magnetic core halves (9a, 9b) being opposed to each other through a non-magnetic material (13) such as SiO₂ to form a magnetic gap (12). The magnetic core halves (9a, 9b) are made of a ferromagnetic oxide such as ferrite and have gap forming faces to be opposed to each other to form the magnetic gap (12). The gap forming faces are etched by phosphoric acid solution and then purified by reverse sputtering, so that a grown crystal of the ferromagnetic oxide is exposed on the gap forming faces. A heat-resistant thin film (10a, 10b) of a heat-resistant material such as SiO₂ is formed on each of the gap forming faces. A ferromagnetic thin film (11a, 11b) of a ferromagnetic metal material such as sendust, is formed on each heat-resistant thin film (10a, 10b). Preferably, the thickness of the heat-resistant thin film (10a, 10b) to be formed is 1 nm or more and one tenth or less of the width of the magnetic gap (12). For example, SiO₂ films of 5 nm in thickness as the heat-resistant thin films (10a, 10b) are formed on the respective gap forming faces and sendust films of 3 µm in thickness as the ferromagnetic metal thin films (11a, 11b) are formed on the respective SiO₂ films. In this case, the gap length of the magnetic gap (12) is set to 0.2 µm.
-
7.发明公开
公开(公告)号：EP0299480A2
公开(公告)日：1989-01-18
申请号：EP88111328.6
申请日：1988-07-14
CPC分类号： G11B5/1874 , G11B5/1878
摘要： A magnetic head comprises a pair of magnetic core halves (9a, 9b), heat-resistant thin films (10a, 10b) and ferromagnetic thin films (11a, 11b), the pair of magnetic core halves (9a, 9b) being opposed to each other through a non-magnetic material (13) such as SiO₂ to form a magnetic gap (12). The magnetic core halves (9a, 9b) are made of a ferromagnetic oxide such as ferrite and have gap forming faces to be opposed to each other to form the magnetic gap (12). The gap forming faces are etched by phosphoric acid solution and then purified by reverse sputtering, so that a grown crystal of the ferromagnetic oxide is exposed on the gap forming faces. A heat-resistant thin film (10a, 10b) of a heat-resistant material such as SiO₂ is formed on each of the gap forming faces. A ferromagnetic thin film (11a, 11b) of a ferromagnetic metal material such as sendust, is formed on each heat-resistant thin film (10a, 10b). Preferably, the thickness of the heat-resistant thin film (10a, 10b) to be formed is 1 nm or more and one tenth or less of the width of the magnetic gap (12). For example, SiO₂ films of 5 nm in thickness as the heat-resistant thin films (10a, 10b) are formed on the respective gap forming faces and sendust films of 3 µm in thickness as the ferromagnetic metal thin films (11a, 11b) are formed on the respective SiO₂ films. In this case, the gap length of the magnetic gap (12) is set to 0.2 µm.
摘要翻译： 磁头包括一对磁芯半部（9a，9b），耐热薄膜（10a，10b）和铁磁性薄膜（11a，11b），所述一对磁芯半部（9a，9b）与 彼此通过诸如SiO 2的非磁性材料（13）形成磁隙（12）。 磁芯半部（9a，9b）由铁氧体等铁磁性氧化物构成，并具有彼此相对的间隙形成面，形成磁隙（12）。 通过磷酸溶液蚀刻间隙形成面，然后通过反溅射进行纯化，使得在间隙形成面上露出铁磁性氧化物的生长晶体。 在每个间隙形成面上形成耐热材料如SiO 2的耐热薄膜（10a，10b）。 在每个耐热薄膜（10a，10b）上形成铁硬金属材料（如铁硅铝铁合金）的铁磁性薄膜（11a，11b）。 优选地，要形成的耐热薄膜（10a，10b）的厚度为磁隙（12）的宽度的1nm以上且十分之一以下。 例如，作为耐热薄膜（10a，10b）的厚度为5nm的SiO 2膜作为强磁性金属薄膜（11a，11b）形成在厚度为3μm的各个间隙形成面和厚度薄膜上， 形成在各自的SiO 2膜上。 在这种情况下，磁隙（12）的间隙长度设定为0.2μm。
-
公开(公告)号：EP0227920A3
公开(公告)日：1990-04-25
申请号：EP86115344.3
申请日：1986-11-05
发明人： Okuda, Hiroyuki , Doi, Masaru , Shimizu, Yoshiaki , Yamano, Takao , Ino, Kazuo , Ishihara, Koso
CPC分类号： G11B5/4893 , G11B5/0086 , G11B5/024 , G11B5/127 , G11B5/53
摘要： A magnetic recording apparatus of a helical scanning system comprises a rotary cylinder (13), recording heads (A and B) and an erase head (10) attached to slightly project from a rotating surface (13a) of the cylinder (13). The rotary erase head (10) has a gap (4) comprising a ferrite core half (1) and a Sendust film (3) formed on a ferrite core half (2) opposed to the ferrite core half (1) and having a larger saturation magnetic flux density. In addition, the recording heads (A and B) and the rotary erase head (10) are attached on the rotary cylinder (13) so that an end (P1) located forward with respect to the tape travelling direction (11) of the Sendust film (3) may trace the backward side with respect to the tape travelling direction (11), apart by a distance which is a half of the gap length of the rotary erase head (10), as compared with a forward end (Q) of a recorded track pattern (15a) formed on a tape (14) by the recording head (A) scanning immediately after erasing by the rotary erase head (10).
-
公开(公告)号：EP0227920A2
公开(公告)日：1987-07-08
申请号：EP86115344.3
申请日：1986-11-05
发明人： Okuda, Hiroyuki , Doi, Masaru , Shimizu, Yoshiaki , Yamano, Takao , Ino, Kazuo , Ishihara, Koso
CPC分类号： G11B5/4893 , G11B5/0086 , G11B5/024 , G11B5/127 , G11B5/53
摘要： A magnetic recording apparatus of a helical scanning system comprises a rotary cylinder (13), recording heads (A and B) and an erase head (10) attached to slightly project from a rotating surface (13a) of the cylinder (13). The rotary erase head (10) has a gap (4) comprising a ferrite core half (1) and a Sendust film (3) formed on a ferrite core half (2) opposed to the ferrite core half (1) and having a larger saturation magnetic flux density. In addition, the recording heads (A and B) and the rotary erase head (10) are attached on the rotary cylinder (13) so that an end (P1) located forward with respect to the tape travelling direction (11) of the Sendust film (3) may trace the backward side with respect to the tape travelling direction (11), apart by a distance which is a half of the gap length of the rotary erase head (10), as compared with a forward end (Q) of a recorded track pattern (15a) formed on a tape (14) by the recording head (A) scanning immediately after erasing by the rotary erase head (10).
-
10.发明公开Magnetic head and method of manufacturing the same 失效Magnetischer Kopf und sein Herstellungsverfahren。
公开(公告)号：EP0328104A2
公开(公告)日：1989-08-16
申请号：EP89102242.8
申请日：1989-02-09
CPC分类号： G11B5/127 , G11B5/1871 , Y10T29/49046 , Y10T29/49057 , Y10T29/49067
摘要： A magnetic head comprises a pair of magnetic core halves (1a, 1b), which are abutted with each other through a nonmagnetic material to define a magnetic gap (2), and ferromagnetic thin films (3a, 3b). The magnetic core halves (1a, 1b), which are formed of ferromagnetic oxide, have gap forming surfaces to be abutted with each other. The ferromagnetic metal thin films (3a, 3b) are selectively formed on the gap forming surfaces of the pair of magnetic core halves (1a, 1b). A ferromagnetic thin film (3b) is so formed that portion (12b, 12c, 12d) to be provided with a track width regulating groove (13b), a coil groove (13c) or a joining member receiving groove (13d) is exposed within a gap forming surface of one magnetic core half member (7b). Another ferromagnetic thin film (3a) is so formed that, in a gap forming surface of another magnetic core half member (7a), a portion (12e, 12f) opposite to the coil groove (13c) or the joining member receiving groove (13d) to be provided in the gap forming surface of the magnetic core half member (7b) is exposed. These ferromagnetic thin films (3a, 3b) are selectively formed by ion beam etching. Grooves (13b, 13c, 13d) are provided in one magnetic core half (1b) by mechanical working through a dicing saw or the like.
摘要翻译： 磁头包括通过非磁性材料彼此邻接以限定磁隙（2）和铁磁薄膜（3a，3b）的一对磁芯半体（1a，1b）。 由铁磁性氧化物形成的磁芯半部（1a，1b）具有彼此抵接的间隙形成表面。 铁磁金属薄膜（3a，3b）选择性地形成在一对磁芯半体（1a，1b）的间隙形成表面上。 形成铁磁性薄膜（3b），使具有轨道宽度限制槽（13b），线圈槽（13c）或接合构件容纳槽（13d）的部分（12b，12c，12d）暴露在 一个磁芯半部件（7b）的间隙形成表面。 另一个铁磁薄膜（3a）形成为在另一个磁芯半体（7a）的间隙形成表面中，与线圈槽（13c）或接合件容纳槽（13d）相对的部分（12e，12f） ）设置在磁芯半部件（7b）的间隙形成表面中。 这些铁磁薄膜（3a，3b）通过离子束蚀刻选择性地形成。 沟槽（13b，13c，13d）通过机械加工通过切割锯等设置在一个磁芯半部（1b）中。
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.011 秒)
