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1. 发明专利

JPH02192065A DOUBLE FACE MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH02192065A
公开(公告)日：1990-07-27
申请号：JP966389
申请日：1989-01-20
申请人： HITACHI MAXELL , HITACHI LTD
发明人： TANAKA YOSHITO , HAYASHI MASASHI , FUJIWARA HIDEO , YONEDA FUKUO , TANAKA KATSUYUKI
IPC分类号： G11B17/32 , G11B17/34
摘要： PURPOSE:To stably record information and to improve the durability of a magnetic disk by providing a specific groove part on the magnetic disk. CONSTITUTION:A magnetic core 7 of one magnetic head 2 or 3 is made to face a groove 11 of the other magnetic heads 3 or 2, and the magnetic core is brought into contact with a magnetic disk 1 by means of suitable press- contacting force by using the flexibility of the magnetic disk 1. Further on each second foot parts 12 of the first or second magnetic head 2 or 3 arranged on external or internal peripheral side of the magnetic disk 1, a negative pressure generating groove 13, which is made deeper from the upstream side in the rotation direction of the magnetic disk 1 toward the downstream side, is formed, when the disk 1 is rotated at high speed, the negative pressure is generated by the fluid force between the negative pressure generating groove 13 and the disk 1, and force to attract the disk 1 is operated. Consequently the vibration of the disk 1 generated by the high-speed rotation is absorbed, the magnetic heads 2 and 3 come in contact with the disk 1 at constant surface pressure, stable recording/reproducing is attained, and further the durability of the disk 1 is improved.

2. 发明专利

JPS61145712A MAGNETIC HEAD 失效
公开(公告)号：JPS61145712A
公开(公告)日：1986-07-03
申请号：JP26636784
申请日：1984-12-19
申请人： HITACHI MAXELL , HITACHI LTD
发明人： FUJIWARA HIDEO , TOTTORI TAKESHI , HAYASHI MASASHI , INAGOYA OSAMU , YAMANO MINORU , KUMASAKA TAKAYUKI , OTOMO MOICHI , KUDO SANEHIRO , MORIKAWA JUICHI
IPC分类号： G11B5/127 , G11B5/187 , G11B5/23 , G11B5/265 , G11B5/31
摘要： PURPOSE:To decrease the time needed for formation of a magnetic thin film by forming a projection part with plural projections at a part where the core base of a core half is set opposite to a magnetic gap. CONSTITUTION:The projection parts 29 and 32 containing four projections are formed at the parts where the 1st and 2nd core bases 30 and 33 of a record/ reproduction head 21 are set opposite to a magnetic gap 35. Therefore magnetic thin films 31 and 34 are formed into plural chevrons at their tip parts according to the forms of parts 29 and 32. Thus the areas near the bottom parts of those chevrons formed at the tips of both films 31 and 34 can be cut when the gap 35 is formed by cutting away both films 31 and 34. In such a way, the desired track width l of 100-140mum can be obtained easily by setting properly the sizes and numbers of projections of both parts 29 and 32 respectively.

3. 发明专利

JPS6145405A Magnetic head device 失效
标题翻译：磁头设备
公开(公告)号：JPS6145405A
公开(公告)日：1986-03-05
申请号：JP16556584
申请日：1984-08-09
申请人： Hitachi Ltd , Hitachi Maxell Ltd
发明人： FUJIWARA HIDEO , HAYASHI MASASHI , TANAKA YOSHITO , OKUWAKI TOYOJI , KUMASAKA TOSHIYUKI , HORIUCHI YASUAKI
IPC分类号： G11B5/187 , G11B5/265 , G11B5/48 , G11B5/58 , G11B17/32
CPC分类号： G11B5/4886 , G11B5/58 , G11B17/32
摘要： PURPOSE:To bring a magnetic gap into contact with a disc efficiently to obtain high adhesiveness by curving the sliding surfaces of the 1st leg parts of a pair of magnetic heads so as to be projected slightly higher than the slinding surfaces of the 2nd leg parts. CONSTITUTION:A recording/reproducing core 3 and an erasing core 4 are embedded in the disc sliding surface 6a of the 1st led part 6 of a core holding part 2 of one magnetic head 1 and the shape of the sliding surface is curved so as to be projected slightly higher than the sliding surface 7a of the 2nd leg part 7. The other magnetic head 10 is similarly constituted. A floppy disc 9 is held between the magnetic heads 1, 10 to execute recording/reproducing. When the adhering pressure of both the heads 1, 10 are increased under said status, efficient contact state is obtained without the generation of a specific trouble for the contact and high adhesiveness can be attained between a gap 3a and the floppy disc 9.
摘要翻译：目的：通过使一对磁头的第一腿部的滑动面弯曲成稍高于第二腿部的脱离面的方式，有效地使磁隙与盘接触，以获得高粘合性。构成：将记录再现芯3和擦除芯4嵌入在一个磁头1的芯保持部2的第一引导部6的盘滑动面6a中，滑动面的形状弯曲，被投影略高于第二腿部7的滑动表面7a。另一个磁头10类似地构成。软磁盘9被保持在磁头1,10之间以执行记录/再现。当在所述状态下两个头部1,10的粘附压力增加时，获得有效的接触状态而不会产生接触的特定问题，并且可以在间隙3a和软盘9之间获得高粘合性。

4. 发明专利

JPS6174113A Magnetic head 失效
标题翻译：磁头
公开(公告)号：JPS6174113A
公开(公告)日：1986-04-16
申请号：JP19487684
申请日：1984-09-19
申请人： Hitachi Ltd , Hitachi Maxell Ltd
发明人： TOTTORI TAKESHI , FUJIWARA HIDEO , HAYASHI MASASHI , USUI AKIRA , KUMASAKA TAKAYUKI , OTOMO MOICHI , KUDO SANEHIRO , ISHIHARA KIYOSHI
IPC分类号： G11B5/245 , G11B5/127 , G11B5/187 , G11B5/23 , G11B5/31
CPC分类号： G11B5/3103 , G11B5/1878
摘要： PURPOSE:To prevent crack and chipping of a core half at manufacture and to ensure excellent magnetic characteristic by forming a very narrow flat part to the tip of a projection of the core half coated with a magnetic film. CONSTITUTION:A flat part 70 having a very narrow width not causing any pseudo magnetic gap, e.g., 15mum or the like is formed at the tip of the projection 29 of the 1st core base 30 to which the 1st magnetic film 31 of a recording/ reproducing head 21 is coated. Then similar flat parts 71, 72, 73 are formed at projections 42, 45 of of an erasure head 22 and a projection 32 of the 2nd core base 33. Thus, crack and chipping at manufacture of the core half are prevented, the number is reduced to 1/3 of that of a conventional head and the excellent magnetic characteristic is ensured.
摘要翻译：目的：为了防止制造时半芯片的裂纹和碎裂，并且通过在涂覆有磁性膜的芯部半部的突起的尖端上形成非常窄的扁平部分来确保优异的磁特性。构成：在第一芯基座30的突起29的顶端处形成具有非常窄的宽度的不产生任何假磁隙（例如15μm等）的平坦部分70，记录/ 再现头21被涂覆。然后，类似的平面部分71,72,73形成在擦除头22的突起42,45和第二芯基座33的突出部32上。因此，防止在芯部半制造时的裂纹和碎裂，数量是降低到常规头的1/3，并且确保优异的磁特性。

5. 发明专利

JPS61115204A Magnetic head 失效
标题翻译：磁头
公开(公告)号：JPS61115204A
公开(公告)日：1986-06-02
申请号：JP23596684
申请日：1984-11-10
申请人： Hitachi Ltd , Hitachi Maxell Ltd
发明人： INAGOYA OSAMU , FUJIWARA HIDEO , TOTTORI TAKESHI , HAYASHI MASASHI , OTOMO MOICHI , KUMASAKA TAKAYUKI , KUDO SANEHIRO
IPC分类号： G11B5/127 , G11B5/187 , H01F10/20
CPC分类号： G11B5/127 , G11B5/187
摘要： PURPOSE:To assure an excellent magnetic characteristic by positioning the sliding surface of a substrate which supports a thin ferromagnetic metallic film toward the (1, 1, 0) face from the single crystal manganese-zinc ferrite face and toward the (2, 1, 1) face from the (1, 1, 1) face respectively within specific angles of inclination. CONSTITUTION:A magnetic head is manufactured by using respectively single crystal manganese-zinc ferrite as the core substrate and an amorphous alloy of cobalt-niobium-zirconium as the thin ferromagnetic metallic film. The magnetic head is brought into contact with a magnetic disk while the disk is kept rotated to maintain the continuous sliding contact between the head and disk. As a result, the head is so formed that the sliding surface of the core substrate is positioned within the range of 0-30 angle of inclination from the (1, 1, 1) face toward the (1, 1, 0) face and within the range of 0-30 angle of inclination from the (1, 1, 1) face toward (2, 1, 1) face, then the core substrate and the thin ferromagnetic metallic film wear approximately at the similar rate and therefore the difference of steps between both is extremely small.
摘要翻译：目的：通过将支撑薄铁磁性金属膜的基板的滑动面从单晶锰锌铁氧体磁体朝向（1，1，0）面朝向（2,1， 1）分别在特定倾斜角内从（1,1,1）面朝向。构成：通过分别使用单晶锰锌铁氧体作为核心基板和钴 - 铌 - 锆的非晶合金作为薄铁磁金属膜来制造磁头。磁盘与磁盘接触，同时保持磁盘旋转以保持磁头和磁盘之间的连续滑动接触。结果，头部形成为使得芯基板的滑动面位于从（1,1,1）面朝向（1,1,0）面的0-30°的倾斜角度的范围内，以及在从（1,1,1）面到（2,1,1）面的0-30°的倾角范围内，芯基板和薄铁磁性金属膜的磨损程度大致相同，因此差异两者之间的步骤是非常小的。

6. 发明专利

JPS6145406A Magnetic head device 失效
标题翻译：磁头设备
公开(公告)号：JPS6145406A
公开(公告)日：1986-03-05
申请号：JP16556684
申请日：1984-08-09
申请人： Hitachi Ltd , Hitachi Maxell Ltd
发明人： FUJIWARA HIDEO , SAKAMOTO AKITO , HAYASHI MASASHI , INAKOYA OSAMU , KUMASAKA TAKAYUKI , OKUWAKI TOYOJI , TAMURA TEIZO , MORIKAWA JUICHI
IPC分类号： G11B5/187 , G11B5/265 , G11B5/48 , G11B5/58 , G11B17/32
CPC分类号： G11B5/4886 , G11B5/58 , G11B17/32
摘要： PURPOSE:To attain efficient contact state and high adhesiveness by forming the area of the sliding surface of the 1st leg part of a magnetic head smaller than that of the 2nd leg part and opposing the 1st leg part of one magnetic head to the center of the 2nd leg part of the other magnetic head at the holding of a disc. CONSTITUTION:The 1st magnetic head 2 consists of the 1st narrow leg part 7 having a recording/reproducing core or the like and the 2nd wide leg part 8 and the 2nd magnetic head 3 is similarly constituted. When a both-side floppy disc 1 is held between both the heads 2, 3, the 1st leg part 7 of the head 2 is opposed to the approximate center of the 2nd leg part 8. Since the area of the 1st leg part 7 is formed smaller than that of the 2nd leg part, the pressure of the contact surface can be increased and the adhesiveness can be also increased. In addition, the 1st leg part 7 is opposed to the center of the 2nd leg part 8, so that the contact surfaces are not hurt and the efficient contact state can be kept even if the disc 1 is warped.
摘要翻译：目的：通过将磁头的第一腿部的滑动面的面积比第二腿部的面积小，并且将一个磁头的第一腿部与第一腿部的第一腿部相对的方向，形成有效的接触状态和高粘接性另一个磁头的第二个腿部分在一个光盘的保持下。构成：第一磁头2由具有记录/再现芯等的第一窄腿部分7和类似地构成第二宽腿部分8和第二磁头3组成。当双面软盘1被保持在两个头部2,3之间时，头部2的第一腿部7与第二腿部8的大致中心相对。由于第一腿部7的面积是形成为小于第二腿部的形状，可以提高接触面的压力，并且还可以提高粘接性。此外，第一腿部7与第二腿部8的中心相对，使得接触表面不受伤，并且即使盘1翘曲也可以保持有效的接触状态。

7. 发明专利

JPS6142712A Magnetic head device 失效
标题翻译：磁头设备
公开(公告)号：JPS6142712A
公开(公告)日：1986-03-01
申请号：JP16426784
申请日：1984-08-07
申请人： Hitachi Ltd , Hitachi Maxell Ltd
发明人： FUJIWARA HIDEO , HAYASHI MASASHI , SAKAMOTO AKITO , INAKOYA OSAMU , OKUWAKI TOYOJI , TAISAKA TAKAYUKI , HORIUCHI YASUAKI
IPC分类号： G02B6/44 , G11B5/187 , G11B5/265 , G11B17/32
CPC分类号： G11B5/1871 , G02B6/443 , G11B17/32
摘要： PURPOSE:To bring a magnetic recording medium and a recording and reproducing core into contact with each other and to improve magnetic characteristics by curving sliding contact surfaces of the 1st leg parts into a convex surface shape and sliding contact surfaces of the 2nd leg parts in a concave surface shape, and sliding the magnetic recording medium on the convex sliding surface. CONSTITUTION:The magnetic head device is constituted so that the 1st leg parts 9 and 10 have concave sliding contact surfaces 27 and 28 and the 2nd leg parts 11 and 12 have concave sliding contact surfaces 29 and 30. Consequently, recording and reproducing cores 5 and 6 contact the magnetic recording medium 23 locally to improve the magnetic characteristics.
摘要翻译：目的：使磁记录介质和记录再现芯彼此接触并通过将第一腿部的滑动接触表面弯曲成凸面形状并将第二腿部的滑动接触表面弯曲成凹形表面形状，并且将磁记录介质滑动到凸形滑动表面上。构成：磁头装置构成为第一脚部件9和10具有凹形滑动接触表面27和28，并且第二腿部部分11和12具有凹形的滑动接触表面29和30.因此，记录和再现磁芯5和 6局部地接触磁记录介质23以提高磁特性。

8. 发明专利

JPH07265542A PACHINKO BALL BOX 失效
公开(公告)号：JPH07265542A
公开(公告)日：1995-10-17
申请号：JP5728594
申请日：1994-03-28
申请人： HITACHI MAXELL
发明人： ITO FUMIO , USUI AKIRA , SEKINE NORIO , NAKAGAWA TAKAHIRO , HAYASHI MASASHI
IPC分类号： A63F7/02
摘要： PURPOSE:To speed up the outflow of balls and shorten the outflow time by specifying the inclination of the bottoms on both sides of a discharge port to specified angles, in a pachinko ball box which has said discharge port at the center of the bottom or at the center of the side face in contact with the bottom. CONSTITUTION:A pachinko ball box 1 has discharge ports made on both sides of the lowermost bottom part 2a, and a shutter member for blocking or opening this discharge port is provided in each discharge port, and also a shutter retaining and retreating part 5 made integrally is provided at the side of the ball box 1. An inclined bottom part 2b is so made aslant at an angle of theta(=10 deg.-20 deg.) as to go down a little toward the lowermost bottom part 2b, and also this inclined bottom part 2b is made in the shape of a trough where the center is recessed a little. If such a boil box 1 is placed on the topside of a counter, the shutter member is pushed up, resisting a spring, by the shutter control bar on counter side, whereby pachinko balls are let flow out from the opened discharge port.

9. 发明专利

JPH03132906A MAGNETIC HEAD 失效
公开(公告)号：JPH03132906A
公开(公告)日：1991-06-06
申请号：JP27029189
申请日：1989-10-19
申请人： HITACHI MAXELL
发明人： HAYASHI MASASHI , ISHIZUKA MAKOTO , ITO FUMIO
IPC分类号： G11B5/17
摘要： PURPOSE:To prevent a lead wire from being disconnected in manufacturing process of post-handling by sealing the root part of the lead wire of a coil wound around a head core with the elastic sealing material of resin. CONSTITUTION:The root part (leading bottom part) of the lead wire of the coil wound around the head core is sealed with, for instance, the rubber-shaped elastic sealing material 10 of the resin. The elastic adhesive sealing material 10 of the resin covering the root part (leading bottom part) of the lead wire 8a... of each coil 8 functions so as to prevent extraordinary bending to concentrate stress at the leading bottom part of the lead wire 8a from being caused (so as to moderate the bending), and acts as a protection member acting so as to prevent force being transmitted to a part which was easy to be disconnected in the past. Thus, the disconnection of wire of the lead wire 8a can be prevented as much as possible.

10. 发明专利

JPS63124208A MAGNETIC HEAD 失效
公开(公告)号：JPS63124208A
公开(公告)日：1988-05-27
申请号：JP26990486
申请日：1986-11-14
申请人： HITACHI MAXELL
发明人： TANAKA YOSHITO , YAMAMOTO HIROSHI , FUJIWARA HIDEO , HAYASHI MASASHI , TOTTORI TAKESHI , INAGOYA OSAMU , MIKAMI KANSUKE
IPC分类号： G11B5/265 , G11B5/23
摘要： PURPOSE:To prevent core bases from generation breakage or cracks by forming a non-magnetic soft metallic thin film between the core bases and magnetic thin films adhering to the magnetic gap forming face side, and even if thermal stress due to the difference of thermal expansion coefficients between the core bases and the magnetic thin films is applied, allowing the soft metallic layer to absorbed the thermal stress. CONSTITUTION:The magnetic thin films 12, 15, 27 adhering to projection parts 10, 13, 22, 25 formed on the core bases 11, 14, 23, 26 are stuck to the surface of the soft metallic layer 31. Soft and non-magnetic metal such as aluminum, gold and silver can be used for a material forming the soft metallic layer 31 and a vacuum film forming method such as vacuum evaporation method or sputtering method is especially proper to the formation. Even if thermal stress due to heat generated at the time of forming the magnetic thin films or the difference of thermal expansion coefficients between the core bases and the magnetic thin films is applied to the core bases, the thermal stress is absorbed by the soft metallic layer 31 and the core bases 11, 14, 23, 26 can be prevented from generating clips or cracks.

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