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1. 发明专利

JPS52145014A FLOATING TYPE HEAD SUPPORTING DEVICE OF MAGNETIC DISK DEVICE 失效
公开(公告)号：JPS52145014A
公开(公告)日：1977-12-02
申请号：JP6181776
申请日：1976-05-27
申请人： NIPPON TELEGRAPH & TELEPHONE , HITACHI LTD , FUJITSU LTD
发明人： MITSUYA YASUNAGA , KOGURE KENJI , TAKAHASHI TADAO , SHIGEMATA KAZUHIRO , ISHIDA GENICHI , HAMAZAKI SHIGEMITSU
IPC分类号： G11B21/12 , G11B5/60
摘要： PURPOSE:To ease the landing on and off action of a floating head by making a transverse pin forwards and backwards action, thus making a loading spring move up and down along recording media.

2. 发明专利

JPH0121553B2 失效
公开(公告)号：JPH0121553B2
公开(公告)日：1989-04-21
申请号：JP23086983
申请日：1983-12-07
申请人： FUJITSU LTD
发明人： INAZU ISOKICHI , HAMAZAKI SHIGEMITSU
IPC分类号： G11B21/21 , G01N19/00 , G11B5/48 , G11B33/10

3. 发明专利

JPS58114319A MAGNETIC HEAD 失效
公开(公告)号：JPS58114319A
公开(公告)日：1983-07-07
申请号：JP21171681
申请日：1981-12-25
申请人： FUJITSU LTD
发明人： HAMAZAKI SHIGEMITSU
IPC分类号： G11B5/23 , G11B5/012 , G11B5/29
摘要： PURPOSE:To obtain the uniform electromagnetic converting characteristics and at the same time to facilitate the process through a demodulating circuit, by specifying the length of the gaps of magnetic head cores packaged at the inner and outer circumference parts. CONSTITUTION:A magnetic disk 11 is divided into an inner circumference side track 13 and an outer circumference side track 14, and optimum core gap lengths g1 and g0 are obtained for magnetic heads 12a and 12b in order to obtain the same resolving power for the most inside circumference of the tracks 13 and 14 respectively. In this case, the constants are defined as eta1 and eta2 on the basis of the shortest recording wavelengths lambda1 and lambda0 which are recorded and reproduced at the inner and outer circumference areas of the heads 12a and 12b respectively. That is, g1

4. 发明专利

JPH0366722B2 失效
公开(公告)号：JPH0366722B2
公开(公告)日：1991-10-18
申请号：JP21171681
申请日：1981-12-25
申请人： FUJITSU LTD
发明人： HAMAZAKI SHIGEMITSU
IPC分类号： G11B5/23 , G11B5/012 , G11B5/29

5. 发明专利

JPH0130216B2 失效
公开(公告)号：JPH0130216B2
公开(公告)日：1989-06-16
申请号：JP22218883
申请日：1983-11-28
申请人： FUJITSU LTD
发明人： HAMAZAKI SHIGEMITSU
IPC分类号： G11B5/455

6. 发明专利

JPS62117142A Production of magnetic recording medium 失效
标题翻译：磁记录介质的生产
公开(公告)号：JPS62117142A
公开(公告)日：1987-05-28
申请号：JP25593585
申请日：1985-11-15
申请人： Fujitsu Ltd
发明人： HAMAZAKI SHIGEMITSU
IPC分类号： G11B5/842
摘要： PURPOSE: To facilitate the control of the mixing ratio of alumina in a magnetic coating material by using alumina balls and resinous balls as the kneading balls.
CONSTITUTION: In kneading the magnetic coating material by a ball mill, an appropriate amt., determined by experimental data, of alumina balls and resinous balls is used, and the content of the alumina or the resin in the magnetic coating material obtained by kneading is controlled to a desired value. Consequently, the content of alumina particles as a reinforcement in the magnetic coating material and the content of the resin as a magnetic recording medium having excellent SN ratio and coated film strength and hardly damaging a magnetic head can be produced.
COPYRIGHT: (C)1987,JPO&Japio
摘要翻译：目的：通过使用氧化铝球和树脂球作为揉球，以便于控制磁性涂层材料中氧化铝的混合比。构成：在用球磨机捏合磁性涂料的过程中，使用氧化铝球和树脂球测定的合适体积，通过捏合得到的磁性涂料中的氧化铝或树脂的含量为控制到所需的值。因此，可以制造作为磁性涂层材料中的增强剂的氧化铝颗粒的含量和具有优异的SN比和涂膜强度并且几乎不损坏磁头的作为磁记录介质的树脂的含量。

7. 发明专利

JPS6224489A MAGNETIC HEAD SLIDER 失效
公开(公告)号：JPS6224489A
公开(公告)日：1987-02-02
申请号：JP16445385
申请日：1985-07-25
申请人： FUJITSU LTD
发明人： HAMAZAKI SHIGEMITSU
IPC分类号： G11B21/21 , G11B5/60
摘要： PURPOSE:To improve a floating characteristic by providing an angle of elevation in the air flow inlet part of a slider whose surface is formed to a circular arc or parabolic shape. CONSTITUTION:A magnetic head slider 21 has plural side rails 22 on the upper face, a front end rail 23, and a recessed part 24, and side rails 22 and the front end rail 23 are formed to circular arc or parabolic shapes, and a flat part 25 which is the air flow-in part and has an angle is provided in the part of the front end rail 23. When a magnetic disc 3 starts the rotate, flowed-in air is increased by the angle alpha provided in the front end to improve floating, and a front end (a) is not brought into contact with the surface of the magnetic disc 3, and the magnetic head slider 21 and the magnetic disc 3 are not damaged.

8. 发明专利

JPS6050778A MAGNETIC HEAD SUPPORT MECHANISM 失效
公开(公告)号：JPS6050778A
公开(公告)日：1985-03-20
申请号：JP15952483
申请日：1983-08-31
申请人： FUJITSU LTD
发明人： HAMAZAKI SHIGEMITSU
IPC分类号： G11B21/21 , G11B5/60
摘要： PURPOSE:To minimize the radial position shift of a magnetic head due to a thermal change, oscillation, etc., by making end parts of the folded part of a flexible structure support part nearly parallel to the surface jointed with a floating slider, joining the parallel surfaces with a rigid structure support pressing part, and connecting those joint part continuously through a slanting surface. CONSTITUTION:The rigid structure support pressing part 10 has a rigid structure using a stainless steel plate and is in a horizontal shape. The joint surface 13 between the flexible structure support part 11 and slider 2 and the joint surface 12 of the rigid structure support pressing part 10 are separated by a groove 15, and the joint surface 12 is bent at the end part (joint surface 12) of the folded part nearly in parallel to the joint surface 13; and the support member 11 is joined with the pressing part 10 at the bent part C, its joint part (a) is made continuous through the slanting surface, and a dowel 14 is formed on the joint surface 13 so that the pressing part 10 presses the slider 2 at one point. When the slider 2 is pressed, the end part 12 becomes nearly parallel to the joint surface 13, and no stress is given to the support part 11 because of the slanting surface of the joint part (a). Further, the support part 10 and slider 2 are installed in parallel through bent parts (b) and (c). Thus, an off-track extent is reduced regardless of the upward/downward displacement of a head fitting part 5.

9. 发明专利

JPH02193303A MULTI-STAGE WAVEFORM EQUALIZING CIRCUIT 失效
公开(公告)号：JPH02193303A
公开(公告)日：1990-07-31
申请号：JP1240989
申请日：1989-01-20
申请人： FUJITSU LTD
发明人： NARITA TERUYUKI , HAMAZAKI SHIGEMITSU
IPC分类号： G11B5/09
摘要： PURPOSE:To decrease a change in the amplitude reduction of an output waveform and to make the waveform thin and sharp by combining a cosine equalizing circuit into two stages or over. CONSTITUTION:This circuit is a multi-stage waveform equalizing circuit used for a readout circuit of a magnetic recorder and formed by combining cosine equalizing circuits 11, 12 into two stages or over. For example, the 1st stage circuit 11 is formed with a matching resistor 14, a delay line 15, buffers 16, 17 whose gain is the unity, gain setting variable resistors 18, 19 and differential amplifiers 20, 21 and the 2nd stage circuit 12 is formed with matching resistors 22, 23, delay lines 24, 25, buffers 26, 27 whose gain is the unity, a gain setting variable resistor 28, and a differential amplifier 29. Thus, the input side the delay lines 15, 24, 25 is used as the matching and the output side is used as an open circuit, the unmatching state is formed to apply unmatching reflection to the signal.

10. 发明专利

JPS6224421A MAGNETIC HEAD SLIDER 失效
公开(公告)号：JPS6224421A
公开(公告)日：1987-02-02
申请号：JP16347985
申请日：1985-07-24
申请人： FUJITSU LTD
发明人： HAMAZAKI SHIGEMITSU
IPC分类号： G11B5/60
摘要： PURPOSE:To eliminate a crack on the surface of a magnetic disk medium at the time of contact, start and stop by recessing the air bearing forming surface of the center rail of a magnetic head slider from the air bearing forming surface of a both-side slider in surface level. CONSTITUTION:The air bearing forming surface of the center rail 13' of the magnetic head slider 8' and the air bearing forming surface of the both-side slider 12 are not finished on the same plane, but the center rail 13' is slightly recessed and formed. Thus the projection (a) of a magnetic disk medium 3 does not come to contact with the center rail 13 of a magnetic head slider 8 at the time of contact, start and stop, and the surface of a magnetic disk medium 3 is never damaged even if waviness lines on the surface of the magnetic disk medium 3, because the air bearing forming surface of the center rail 13' is lower than that of the both-side slider 12.

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