专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS5833618B2 失效
公开(公告)号：JPS5833618B2
公开(公告)日：1983-07-21
申请号：JP2681081
申请日：1981-02-27
申请人： HITACHI LTD
发明人： SAITO SUKEO , TAKAHASHI HATSUO , TSUJI GIICHI
IPC分类号： G11B5/60 , G11B5/187 , G11B21/21

2. 发明专利

JPS57150121A MAGNETIC HEAD 失效
公开(公告)号：JPS57150121A
公开(公告)日：1982-09-16
申请号：JP3533581
申请日：1981-03-13
申请人： HITACHI LTD
发明人： SHIGEMATA KAZUHIRO , TAKAHASHI HATSUO
IPC分类号： G11B5/187
摘要： PURPOSE:To prevent deterioration in characteristics of a magnetic head, by providing the 2nd groove having a prescribed size at the side of a magnetic core and controlling the gap between a recording medium and the head at the outside of the groove. CONSTITUTION:Grooves 14, having e.g. 0.01-0.02mm. width are provided at the side of a magnetic core 12 from end to end in the lengthwise direction of a magnetic head. Thus, dust and magnetic powder entering opposing surface of a magnetic head medium near the magnetic core flow in the grooves 14 and most of them pass in the grooves 14 and are discharged at the outside of the head. A groove 15 is provided at the ouside of the grooves 14 and this groove 15 plays a role controlling a gap between the head and a tape as well as discharging the dust and magnetic powder as the grooves 14. Thus, the deterioration in the characteristics of the head due to elapse of time in using the magnetic head can hardly be caused. Thus, the deterioration in the characteristics of the magnetic head can be avoided.

3. 发明专利

JPS62149088A MAGNETIC HEAD ASSEMBLY 失效
公开(公告)号：JPS62149088A
公开(公告)日：1987-07-03
申请号：JP28770785
申请日：1985-12-23
申请人： HITACHI LTD
发明人： IIDA MUNEO , KANETA MASANOBU , KAWAMURA KATSUMI , DAITO HIROSHI , MIYAKE YOSHIHIKO , SETONE SHOICHI , TAKAHASHI HATSUO , NAKANISHI MICHIHIRO
IPC分类号： G11B21/21 , G11B5/48 , G11B5/54 , G11B5/60
摘要： PURPOSE:To prevent wind that abuts against a head floating up from a magnetic disk, to optimize the variation of the amount of floating of the head and to improve the accuracy of positioning of the head by providing a member that projects from the magnetic head to the center of rotation of the magnetic disk. CONSTITUTION:A magnetic head arm 1 is provided on the upper face of the magnetic disk 6 of a magnetic disk unit, and a magnetic head 3, a magnetic head gimbals 15 and a flexible printed circuit 16 are attached to the arm 1 and signals are transmitted by the circuit 16. A projecting member 20 positioned at the center of rotation side of the disk 1 is provided in the arm 1 together with the head 3 and made to an integral structure. Wind in the direction of rotation on the face of the disk 6 that rotates at high speed is prevented by the projecting member 20, and the wind that abuts against the head 3 and gimbals 15 is attenuated, and thus, the accuracy of positioning of the head 3 is improved.

4. 发明专利

JPS61271622A MECHANISM FOR REMOVING RESIDUE FOR BURNISHING 失效
公开(公告)号：JPS61271622A
公开(公告)日：1986-12-01
申请号：JP11309985
申请日：1985-05-28
申请人： HITACHI LTD
发明人： SASAKI TAMOTSU , MOCHIDA JIRO , YAMADA KAZUO , MATSUISHI HIROMI , TAKAHASHI HATSUO , FUMIOKA JIYUN
IPC分类号： G11B5/84 , B24B39/06 , B24B55/06
摘要： PURPOSE:To remove surely and simply the residue generated at burnishing by providing a magnetic attracting substance attracting magnetic residue produced from a magnetic recording disc by a magnetic force onto the magnetic recording disc. CONSTITUTION:Magnetic residue is produced by a burnish head 3 shaping projections of the disc 1 at processing and the magnetic residue is going to be scattered from a residue excluding part 3a of the burnish head 3 by a surface layer air flow produced by the revolution of the disc 1. However, since the magnetic attracting body 5 is placed on the disc 1, the magnetic residue is attracted by a magnetic force. Then the attracting body 5 is fitted to a carriage 2 via an arm 4 and arranged in the direction of the part 3a of the head 3, then the magnetic residue is attracted surely in following to the fluctuation of the position of the head 3 by the driving of the carriage 2.

5. 发明专利

JPS5730128A Optical head for optical disk device 失效
标题翻译：光盘设备光学头
公开(公告)号：JPS5730128A
公开(公告)日：1982-02-18
申请号：JP10374980
申请日：1980-07-30
申请人： Hitachi Ltd
发明人： KANEDA NORIYA , TAKAHASHI HATSUO , KITANI HIROSHI
IPC分类号： G11B7/09 , G11B7/08
CPC分类号： G11B7/08
摘要： PURPOSE:To suppress unnecessary parasitic vibrations by curving the center part of a metallic thin piece which supports an optical lens elastically and has spiral winds around an optical axis. CONSTITUTION:An optical lens is fitted to a ring 32 and between rings 32 and 31, three spring pieces 33 are provided spirally. Each spring piece 33 swells up at its center part to form a curved part 41 continuing smoothly from flat parts 42 at both ends. This curved part absorbs the energy of parasitic vibrations efficiently and new parasitic vibrations of high order are never entailed because of the smooth succession of the curved part 41 to both the ends.
摘要翻译：目的：通过弹性地支撑光学透镜的金属薄片的中心部分，并绕着光轴旋转，来抑制不必要的寄生振动。构成：将光学透镜装配到环32和环32和31之间，螺旋地设置有三个弹簧片33。每个弹簧片33在其中心部分上升，以形成从两端的平坦部分42平滑地延伸的弯曲部分41。该弯曲部分有效地吸收寄生振动的能量，并且由于弯曲部分41对两端的平滑连续，所以不会产生高阶的新的寄生振动。

6. 发明专利

JPS56124165A FIXED MAGNETIC HEAD TYPE MAGNETIC DISC DEVICE 失效
公开(公告)号：JPS56124165A
公开(公告)日：1981-09-29
申请号：JP2655680
申请日：1980-03-05
申请人： HITACHI LTD
发明人： TAKAHASHI HATSUO , MATSUSHITA KUNIO , NAKAKOSHI KAZUO , SUZUKI TOSHIO , MIYAKE YOSHIHIKO
IPC分类号： G11B21/21 , G11B5/48 , G11B5/60
摘要： PURPOSE:To prevent the occurrence of head crush to obtain a high-reliability magnetic disc, by adjusting a load of the load spring of the magnetic head to control the floating quantity of the magnetic head from the disc surface uniformly. CONSTITUTION:Magnetic heads 4a-4n provided with floating sliders are fitted to magnetic head fitting table 6 through load springs 5a-5n. If weights of load springs of respective 10 magnetic heads arranged in the inside circumferential part, the middle circumferential part, and the outside circumferential part are denoted as 6g, 8g, and 9.5g respectively, the minimum floating quantity and the maximum floating quantity are controlled to 0.56mum and 0.62mum respectively. As a result, head crush is reduced to the half or less of the conventional one, and a high-performance and high-reliability magnetic disc is obtained.

7. 发明专利

JPH054751B2 失效
公开(公告)号：JPH054751B2
公开(公告)日：1993-01-20
申请号：JP28770785
申请日：1985-12-23
申请人： HITACHI LTD
发明人： IIDA MUNEO , PPONDA MASANOBU , KAWAMURA KATSUMI , DAITO HIROSHI , MYAKE YOSHIHIKO , SETONE SHOICHI , TAKAHASHI HATSUO , NAKANISHI MICHIHIRO
IPC分类号： G11B21/21 , G11B5/48 , G11B5/54 , G11B5/60

8. 发明专利

JPH02216601A MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH02216601A
公开(公告)日：1990-08-29
申请号：JP3494489
申请日：1989-02-16
申请人： HITACHI LTD
发明人： HIRANO YOSHIYUKI , NAKAKOSHI KAZUO , OGAWA TAKUJI , TAKAHASHI HATSUO
IPC分类号： G11B21/21 , G11B5/012
摘要： PURPOSE:To compensate the recording and reproducing characteristic error in the inner peripheral side and the outer peripheral side by constituting the inner peripheral side of a thin film head which has a high S/N and is suitable for high-density recording and constituting the outer peripheral side of a ferrite head or metal in gap head (MIG). CONSTITUTION:Inner peripheral-side and outer peripheral-side heads 2 and 3 are attached to a carriage 20 through load arms 5 like a comb and are positioned to an objective track by an actuator 4 provided at the rear. Higher density recording is required and the recording and reproducing level is reduced according as going to the inner peripheral side, and the extent of floating is increased and the overwrite S/N characteristic is degraded according as going to the outer peripheral side of higher peripheral speed. Consequently, a thin film magnetic head which is suitable for high-density recording and has a high S/N is used as the inner peripheral-side magnetic head 2, and a ferrite head which is superior in write capability and has a nominal extent of floating smaller than that of the inner peripheral side is used as the outer peripheral-side magnetic head 3. Thus, recording and reproducing are satisfactorily performed on the inner peripheral side as well as the outer peripheral side.

9. 发明专利

JPS60164912A MANUFACTURE OF THIN FILM MAGNETIC HEAD 失效
公开(公告)号：JPS60164912A
公开(公告)日：1985-08-28
申请号：JP1992484
申请日：1984-02-08
申请人： HITACHI LTD
发明人： TAKAHASHI HATSUO , KOUNO SADAO
IPC分类号： G11B5/17 , G11B5/31
摘要： PURPOSE:To decrease remarkably manufacture man-hours and to obtain a thin film magnetic head with high quality by forming an upper magnetic circuit on a magnetic head substrate and laminating a head coil assembly formed with the flexible print method by other process on the circuit and then forming the upper magnetic circuit. CONSTITUTION:A flexible print coil 9 made by other process is positioned on the surface of a lower magnetic circuit 1 and then the upper magnetic circuit 7 is formed. A head coil 11 is formed for the flexible print coil 9 by adhering a copper thin plate of several micrones to an insulation film 10 and etching it, and constituted by adhering an insulation film 13 to the face of the head coil 11. Since the head coil 11 is adhered with the ready-made copper thin plate of several micrones, the man-hours are reduced remarkably.

10. 发明专利

JPS57143725A MAGNETIC HEAD 失效
公开(公告)号：JPS57143725A
公开(公告)日：1982-09-06
申请号：JP2681081
申请日：1981-02-27
申请人： HITACHI LTD
发明人： SAITOU YOKUO , TAKAHASHI HATSUO , TSUJI GIICHI
IPC分类号： G11B5/60 , G11B5/187 , G11B21/21
摘要： PURPOSE:To obtain a magnetic head which is inexpensive and has a high efficiency, and to elevate its mechaical reliability, by providing a center track corresponding to signal track width, and a slide surface for generating the floating force, on a magnetic core and the opposed surface of a recording medium of a slider, respectively. CONSTITUTION:A core and slider assembly body 30 is formed by joining in one body slider chips 31a, 31b consisting of a ceramic material, through glass 34a, 34b, onto both sides of a core chip 32 consisting of Mn Zn ferrite which has been formed in one body by sticking a winding yoke 32a on which a winding window 39 has been formed, and an I core 32b by use of glass so as to form a recording and reproducing gap 33. Subsequently, slider slide surfaces 38a, 38b for generating the floating force are formed on the chips 31a, 31b of the op- posed surface side to a recording medium of the assembly body 30, and grooves 37a, 37b for balancing the floating force and returning force are formed between the chip 32 and the chips 31a, 31b. Also, a center track 38c corresponding to the signal track width is formed on the opposed surface side to the recording medium of the chip 32.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式