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1. 发明专利

JP2002117637A PIEZOELECTRIC ELEMENT, ACTUATOR, DISK UNIT, AND PRODUCTION METHOD OF THE PIEZOELECTRIC ELEMENT AND THE ACTUATOR 失效
公开(公告)号：JP2002117637A
公开(公告)日：2002-04-19
申请号：JP2000309633
申请日：2000-10-10
申请人： HITACHI LTD
发明人： AMANO YASUO , SHIGI HIDETAKA , NARISAWA OSAMU , NAKAMURA SHIGEO , FUJITA TAKESHI
IPC分类号： G11B5/596 , G11B21/10 , G11B21/21 , H01L41/09 , H01L41/22 , H01L41/257 , H01L41/313 , H01L41/337 , H01L41/338 , H01L41/43 , H02N2/00
摘要： PROBLEM TO BE SOLVED: To prevent dust generation by a piezoelectric element of an actuator used for a disk unit. SOLUTION: Firing processing and polarization processing are performed to the piezoelectric element, after cutting it from a sheet-like material.

2. 发明专利

JP2002251707A MAGNETIC DISK DEVICE 审中-公开
公开(公告)号：JP2002251707A
公开(公告)日：2002-09-06
申请号：JP2001218953
申请日：2001-07-19
申请人： HITACHI LTD
发明人： AMANO YASUO , NAKAMURA SHIGEO , NARISAWA OSAMU , TOKUYAMA MIKIO , KOBAYASHI MASATO , SASAKI HIROYASU , FUJITA YUJI
IPC分类号： G11B5/60 , G11B5/48 , G11B5/55 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To suppress the extension of an average seeking time. SOLUTION: This disk device is provided with a magnetic head for writing/ reading information, a slider for floating the magnetic head from a rotated magnetic disk, a suspension for supporting the slider, a positioning mechanism for positioning the magnetic head in a specified radial position, and an IC chip loaded on the suspension. On the IC chip loading surface of the suspension, the changing rate of a temperature difference between both sides around the IC chip loading position is set equal to/lower than 3.5 k per sec.

3. 发明专利

JP2001312869A HEAD SUPPORTING MECHANISM AND INFORMATION STORAGE DEVICE 失效
公开(公告)号：JP2001312869A
公开(公告)日：2001-11-09
申请号：JP2000134240
申请日：2000-04-28
申请人： HITACHI LTD
发明人： TAKAHASHI HARUHIDE , MASUDA HIROMITSU , SHIMIZU TOSHIHIKO , TOKUYAMA MIKIO , MAEDA NAOKI , NARISAWA OSAMU , TERAI SHIGEO , TAKAHASHI KENJI , WAKATSUKI KOSAKU , NAKAMURA SHIGEO
IPC分类号： G11B21/21
摘要： PROBLEM TO BE SOLVED: To solve the problem that vibration characteristics of a head supporting mechanism is deteriorated by distortion of a part close to a head fixing part since an excessive force is imposed to the above part more than to the load-bend part of a load beam during assembly positioning. SOLUTION: A protruded part 7 extended from a mount 4 side is provided inside the load bending part 9 of a load beam 6, and used for assembly positioning. Thus, a high performance head supporting mechanism is provided, capable of being assembled accurately, and preventing the deterioration of a vibration characteristics without affecting a part succeeding the load bending part 9 of the load beam 6.

4. 发明专利

JPH10334436A MAGNETIC DISK DEVICE AND ITS MANUFACTURE 失效
公开(公告)号：JPH10334436A
公开(公告)日：1998-12-18
申请号：JP14179097
申请日：1997-05-30
申请人： HITACHI LTD
发明人： TOKISUE HIROMITSU , YONEKAWA SUNAO , ISHII NOBUYUKI , HORIGUCHI YASUYUKI , ENDO KIJU , YOSHIMURA YASUHIRO , ITO YUTAKA , NARISAWA OSAMU
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To prevent a lubricant from sticking and accumulating to a slider and to avoid start-up trouble of the magnetic disk device due to tack and to secure safety against the start-up trouble and high reliability by making a contact angle of the surface of the slider with the lubricant applied on a magnetic disk more than a specified angle. SOLUTION: When the slider 2 is traveled in floating above or in contact with the surface of the magnetic disk 1, the lubricant 11 is stuck and accumulated to a bleed surface 9 of the slider 2. For the purpose of quantifying a relationship between this sticking amt. and surface energy of the slider 2, grease is used as a sticking liquid, and when a stuck and accumulated grease amt. on the slider 2 and a grease contacting angle of the surface of the slider 2 are measured after 1,000 hours of continuous operation, no grease is stuck to the slider 2 in the case of the contact angle set at >=50 degrees. Then, at this time, i.e., when a sticking and accumulating amt. of the grease to the slider is zero, tacky power is suppressed to be a small value that is the same as the initial state.

5. 发明专利

JP2002197628A SLIDER PACKAGING STRUCTURE AND METHOD OF MANUFACTURING THE SLIDER PACKAGING STRUCTURE AS WELL AS METHOD OF REMOVING SLIDER 失效
公开(公告)号：JP2002197628A
公开(公告)日：2002-07-12
申请号：JP2000391291
申请日：2000-12-22
申请人： HITACHI LTD
发明人： ASADA TOYOKI , AMANO YASUO , NISHIKAWA TORU , YOSHIKAWA HARUHIKO , NARISAWA OSAMU
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To make a slider easily exchangeable by easily removing only the slider after packaging the slider on gimbals. SOLUTION: The slider packaging structure formed by adhering the slider mounted with a magnetic head to the gimbals attached to the front end of a load beam (arm) is interposed with two-layered structure adhesive layers consisting of a first adhesive layer and a second adhesive layer between the gimbals and the slider. The first adhesive layer on the gimbals side is formed of material which is weakened in joining force by heating and the second adhesive layer on the slider side is formed of material which is not weakened in the joining force by heating.

6. 发明专利

JPH1011928A MAGNETIC HEAD SUPPORTER 失效
公开(公告)号：JPH1011928A
公开(公告)日：1998-01-16
申请号：JP15788496
申请日：1996-06-19
申请人： HITACHI LTD
发明人： OSAWA HIDENORI , UMAGOE YUKIMORI , OGAWA NAOKI , NARISAWA OSAMU
IPC分类号： G11B21/21
摘要： PROBLEM TO BE SOLVED: To improve and stabilize a bonding strength by a method wherein a trench (R trench) which has a circular-arc cross section and a width direction dimension larger than the dimension of a suspension bonding surface is provided and the bonding surface is bonded to the inside of the trench and the center of the bonding surface is loaded with a certain pressure. SOLUTION: In order to bond a suspension 4 to a magnetic head 6, first, a suspension bonding surface 12 is coated with bonding agent 13. In order to have the bonding agent 13 spread over the whole bonding surface 12 uniformly, the bonding agent 13 is applied to the center part of the bonding surface 12 and, after the head 6 and the bonding surface 12 are aligned with each other so as to make the bonding surface 12 kept within an R trench 3 formed in the rear of the head 6 and, further, make the center of the R trench 3 agree with the center of the bonding surface 12, the center part of the bonding surface 12 is loaded with a certain pressure and, after it is confirmed that the bonding agent 13 protrudes along the outer circumference of the bonding surface 12, a UV radiation is applied to cure the protruding bonding agent 14.

7. 发明专利

JPH09167324A MANUFACTURE OF MAGNETIC HEAD ASSEMBLY BODY 失效
公开(公告)号：JPH09167324A
公开(公告)日：1997-06-24
申请号：JP33010195
申请日：1995-12-19
申请人： HITACHI LTD , HITACHI COMPUTER PERIPHERALS
发明人： NARISAWA OSAMU , MAEDA NAOKI , UMAGOE YUKIMORI , SUGAWARA SHUICHI , YAMAZAKI MUNEYUKI , IKEDA KOJI , AMANO YASUO , EBINUMA NAOTAKE
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To connect between a thinned magnetic head and patterned electric wiring on a support spring at a low temp. and with a low stress. SOLUTION: In the electric wiring connection of the magnetic head set on a gimbal 5, a capillary 14 being a bonding tool of wire bonding is moved on a pad 15 to be dispased provided on the outside of a magnetic head assembly body, and ball bonding is performed, and then, stitch bonding is performed on a magnetic conversion element terminal pad 12 formed on the side surface of the magnetic head 3, and then, the magnetic head assembly body is rotated by 90 deg., and then, the stitch bonding is performed on a wiring connecting terminal pad 7 being a part of the wiring pattern provided on the gimbal 5, and finally, a wire 13 is cut in a cut position 16.

8. 发明专利

JPH08315343A MAGNETIC HEAD ASSEMBLY, METHOD AND DEVICE FOR ASSEMBLING IT, AND MAGNETIC DISK DEVICE 失效
公开(公告)号：JPH08315343A
公开(公告)日：1996-11-29
申请号：JP11696095
申请日：1995-05-16
申请人： HITACHI LTD
发明人： AMANO YASUO , EBINUMA NAOTAKE , SERIZAWA KOJI , MIYANO ICHIRO , MAEDA NAOKI , UMAGOE YUKIMORI , NARISAWA OSAMU , SUGAWARA SHUICHI
IPC分类号： G11B5/60 , G11B5/48 , G11B21/21
摘要： PURPOSE: To obtain an inexpensive magnetic head assembly constituted so that a magnetic head slider and a suspension are wired by using an electrical conductive wire in order to absorb elongation and contraction. CONSTITUTION: A work 50 is formed out of a magnetic head slider 11 provided with a connection terminal circuit pattern 15 and a suspension 14 provided with a wiring pattern 31 and a connection terminal circuit pattern 41. Then, both connection terminal circuit patterns 15 and 41 are connected by wire- bonding and a part of the suspension 14 is provided with flexure function parts A and B. Besides, the wiring 43 between both connection terminal circuit patterns 15 and 41 is executed so as to absorb the elongation and the contraction thereof.

9. 发明专利

JP2002164643A MOUNT STRUCTURE FOR ELECTRONIC COMPONENT 失效
公开(公告)号：JP2002164643A
公开(公告)日：2002-06-07
申请号：JP2000362679
申请日：2000-11-24
申请人： HITACHI LTD
发明人： ASADA TOYOKI , AMANO YASUO , NISHIKAWA TORU , YOSHIKAWA HARUHIKO , NARISAWA OSAMU
IPC分类号： H05K3/32 , H01L21/60 , H01L21/607
摘要： PROBLEM TO BE SOLVED: To provide a flip-chip bonding structure in which a semiconductor integrated circuit chip is mounted directly on a flexible printed circuit board, and a manufacturing method therefor. SOLUTION: In the structure, a metallic material 7 is pasted on the opposite side to the mounting surface of a flexible printed circuit board 4 on which a semiconductor integrated circuit chip 1 is mounted. The chip is flip-chip bonded on the board with ultrasound using a resin 5 directly below the position where the chip is mounted and an adhesive tape 6 other than directly below the position where the chip is mounted, as the material for pasting the circuit board on the metallic material.

10. 发明专利

JP2002163870A MAGNETIC DISC DEVICE AND HEAD SUPPORTING MECHANISM 失效
公开(公告)号：JP2002163870A
公开(公告)日：2002-06-07
申请号：JP2001104088
申请日：2001-04-03
申请人： HITACHI LTD
发明人： YOSHIKAWA HARUHIKO , AMANO YASUO , NAKAMURA SHIGEO , NARISAWA OSAMU
IPC分类号： G11B21/02 , G11B21/10
摘要： PROBLEM TO BE SOLVED: To provide an actuator for setting a position possible to form with low driving pressure and without producing vertical vibration accompanied with the movement of a head supporting component and dust and using a complicated assembly process and improve precision for setting a head position of a revolving disc-typed information storing device and, and highten recording density. SOLUTION: A second actuator 100 that has two polarizing areas separated in a non-polarizing area and plate type structure laminating piezoelectric plates in a thickness direction of a polarizing direction and an electric field direction that is impressed is fixed like bridging a surface of a suspension 200 and a surface of a suspension supporting component 230 supporting the suspension and it is coated with a resin coating 101.

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