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1. 发明专利

JPH01135467A WORKING DEVICE FOR FLOATING EDGE OF MAGNETIC HEAD SLIDER 失效
公开(公告)号：JPH01135467A
公开(公告)日：1989-05-29
申请号：JP29461087
申请日：1987-11-20
申请人： FUJITSU LTD
发明人： ASAUCHI YOSHIMICHI , TANAKA YOSHIO , SHIOTANI HISANORI , NIIJIMA MASAAKI
IPC分类号： G11B5/60 , B24B37/04 , B24B37/30 , G11B21/21
摘要： PURPOSE:To polish the inclined surface of a magnetic head slider uniformly free from dispersion and improve yield by forming the flat surface of a flat basic plate having a isosceles triangular form so as to have a prescribed inclination angle for the inclination surface of the magnetic head slider. CONSTITUTION:A surface including the straight ridgeline of a magnetic head slider 1 or a block 11 fixed onto the supporting member 4 of a basic plate 3 in isosceles triangular form and the top edge part of a separating member 15 at the top point part forms a plane, and the ridgeline contacts uniformly by attaching the surface 8 of a polishing surface plate 6 onto the above- described plane, and polishing is carried out. The flat surface 7 of the basic plate 3 has an equal inclination angle 9 to the inclined surface 2, for the surface plate 8 in contact. Therefore, the magnetic head slider 1 fixed onto the supporting member 4 or the floating surface of the block 11 forms an equal angle, and the polished surface is polishing-finished to an equal inclination angle 9.

2. 发明专利

JPH01243212A MANUFACTURE OF THIN FILM MAGNETIC HEAD 失效
公开(公告)号：JPH01243212A
公开(公告)日：1989-09-27
申请号：JP7032788
申请日：1988-03-24
申请人： FUJITSU LTD
发明人： TSUTSUMI SHOICHI , TAKAHASHI YOSHIO , NAKAMURA KAZUO , NIIJIMA MASAAKI , MATSUMOTO KOZO
IPC分类号： G11B5/31
摘要： PURPOSE:To form a stable thin film pattern by vapor-depositing a thin film material after shielding a part of a photoresist pattern provided on a substrate, and eliminating the photoresist pattern by penetrating an organic solvent from an exposure part. CONSTITUTION:The photoresist pattern 8 is manufactured by applying photoresist on a substrate 7 made of ceramics, etc., and exposing it by using a mask pattern. After a part of the photoresist pattern 8 is shielded by the hood 12 of a jig 11, a thin film is vapor-deposited. When the jig 11 is removed after the thin film being vapor-deposited uniformly, the part shielded by the hood 12 forms the exposure part 13 on which no thin film is attached. Since the exposure part 13 is formed at the outer periphery of the photoresist 8, the organic solvent can be penetrated surely from the exposure part 13 by soaking in the organic solvent. Therefore, the photoresist 8 can be eliminated surely, and the thin film pattern 10 can be formed surely, and a process is stabilized, and sure re-photo off can be obtained, then, reproducibility can be obtained.

3. 发明专利

JP2000057531A MAGNETIC HEAD, ITS PRODUCTION AND DISK DEVICE 失效
公开(公告)号：JP2000057531A
公开(公告)日：2000-02-25
申请号：JP22485498
申请日：1998-08-07
申请人： FUJITSU LTD
发明人： NIIJIMA MASAAKI
IPC分类号： G11B5/31 , G11B5/39
摘要： PROBLEM TO BE SOLVED: To substantially planatarize a magnetic gap layer without adversely affecting to regenerative signal characteristics of a combined head having a magneto-resistive reproducing head part. SOLUTION: The magnetic head 10 has a reproduction lower shielding layer 20, a reproduction lower insulating layer 22, a magneto-resistance element layer 24, a pair of hard magnetic material layers 26 and a pair of terminal layers 28 successively thin-film forming on a substrate 12. The reproduction lower insulating layer 22 integrally has a thick part 22b in contact with the magneto- resistance element layer 24 and a thin part 22d in contact with the hard magnetic material layers 26. The difference in the thicknesses between the thick part 22b and the thin part 22d substantially corresponds to the difference between the total thickness of the magneto-resistance element layer 24 and the total thickness of the hard magnetic material layer 26 and a terminal layer 28. As a result, the front surface 24a of the magneto-resistance element layer 24 and the front surfaces 28a of the respective terminal layers 28 are placed on substantially the same plane and eventually the magnetic gap layer 34 is substantially planatarized.

4. 发明专利

JPH03266429A ION BEAM ETCHING DEVICE 失效
公开(公告)号：JPH03266429A
公开(公告)日：1991-11-27
申请号：JP6432390
申请日：1990-03-16
申请人： FUJITSU LTD
发明人： NIIJIMA MASAAKI , TAKAHASHI YOSHIO , MATSUMOTO KOZO
IPC分类号： H01L21/302
摘要： PURPOSE:To prevent pollutants from adhering to work surface by a method wherein the work processed surface is arranged not to oppose to an ion gun while a magnetic field device bending ion beams to irradiate the work processed surface is provided. CONSTITUTION:The position of a work holder 22 is changed so that the normal direction D2 of the processed surface of a work 24 may be almost orthogonal to the direction D1 of ion beams 26 acceleratingly irradiated with an accelerating grid 16. Next, in order to irradiate the work processed surface 24a with the acceleratingly irradiated ion beams 26, a device to generate magnetic fields 20 in the perpendicular direction to the paper surface is provided, thereby enabling the ion beams 26 to be bent. At this time, pollutants 18, being neutral elements, are to be scattered around in the direction D1 without being influenced by the magnetic field 20. Through these procedures, the pollutants 18 can be prevented from adhering to the work processed surface 24a.

5. 发明专利

JP2001176228A HEAD SUPPORTING BODY AND MAGNETIC MEMORY DEVICE 失效
公开(公告)号：JP2001176228A
公开(公告)日：2001-06-29
申请号：JP35320499
申请日：1999-12-13
申请人： FUJITSU LTD
发明人： NIIJIMA MASAAKI , AMASAKA MASAYOSHI
IPC分类号： G11B21/21 , G11B5/54 , G11B21/12
摘要： PROBLEM TO BE SOLVED: To stabilize the floating of a magnetic head slider mounted at a supporting beam from a recording medium in supporting load operation and unloading operation with a magnetic memory device. SOLUTION: The head supporting body 12 of a ramp load type including the supporting 36 having a front end 32 and a base end 34, gimbals 40 pivotally fitted to the front end 32 of the supporting beam 36 in the pivotal fitting part 54 and a loading member 60 connected to a gimbals free end 58 existing on the base end side of the supporting beam is provided. An inflow end 64 of the magnetic head slider 18 mounted at the gimbals 40 maintains the state more distant from the surface of the recording medium than the outflow end 66 in the loading operation and the unloading operation and therefore the unstability in the floating of the magnetic head slider 18 is prevented by the inclusion of the loading member 60 in the gimbals free end 58.

6. 发明专利

JPH10247307A MAGNETIC HEAD AND MAGNETIC STORAGE DEVICE 失效
公开(公告)号：JPH10247307A
公开(公告)日：1998-09-14
申请号：JP4870997
申请日：1997-03-04
申请人： FUJITSU LTD
发明人： NIIJIMA MASAAKI , SASAKI YUSHI
IPC分类号： G11B5/008 , G11B5/012 , G11B5/39 , G11B5/40
摘要： PROBLEM TO BE SOLVED: To make it possible to prevent a magneto-resistance effect element and non-magnetic insulation layers on the top and bottom thereof from being electrostatically broken down by burying a resistance element in a 1st or a 2nd non-magnetic insulation layer and connect a 1st lead with a 1st magnetic shield or the 1st lead with a 2nd magnetic shield. SOLUTION: When static electricity charged in a 1st lead 16 exceeds a capacity of a parasitic condenser C1, the static electricity is discharged to a 1st magnetic shield layer 11 via a 1st resistance element 18 with low resistance without passing through a 1st non-magnetic insulation layer 12. Similarly, a parasitic condenser C2 is formed between a 2nd magnetic shield layer 15 and the 1st lead 16, and when static electricity exceeding the storage capacity is charged in the 1st lead 16, the static electricity is discharged to the 2nd magnetic shield layer 15 via a 2nd resistance element 19 without passing through the non-magnetic insulation layer 14. Thus, since the static electricity is discharged via the 1st or 2nd resistance element 18, 19, this makes it possible to prevent dielectric breakdown of the 1st and 2nd non-magnetic insulation layers 12, 14.

7. 发明专利

JPH01184601A DURABILITY TESTER FOR MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH01184601A
公开(公告)日：1989-07-24
申请号：JP340688
申请日：1988-01-11
申请人： FUJITSU LTD
发明人： SHIOTANI HISANORI , NIIJIMA MASAAKI
IPC分类号： G11B5/00
摘要： PURPOSE:To evaluate and test many parts of a recording medium by moving a slider radially of the recording medium and controlling the relative speed of the slider and the medium so as to be constant. CONSTITUTION:The core slider 8 is disposed so as to be positioned radially of the recording medium by a head moving mechanism part 11 and a moving mechanism control part 12 for controlling the number of the rotations of the recording medium and the relative speed of the slider to be constant is disposed. Since the number of the rotations of an induction motor 5 is controlled by an inverter 6, a potentiometer 7 is mounted on the handle of the inverter 6 to input the increase and the decrease of a resistance value to an arithmetic circuit 123 and operate the number of the rotations. Since the slider 8 is positioned so as to make the linear velocity of the medium and the slider 8 constant based on the number of the rotations in a control circuit 122, not only the one conventional part but also many parts can be evaluated.

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