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公开(公告)号：JP2002216329A
公开(公告)日：2002-08-02
申请号：JP2001001967
申请日：2001-01-09
Applicant: IBM
Inventor： BABA SACHIYO , KAWAMOTO YASUNORI , OTA SHUNICHIRO
Abstract: PROBLEM TO BE SOLVED: To make it possible to write servo information and ensure the read- write reliability in a sophisticated HDD featured in high revolution and high density. SOLUTION: The center pad 53a of the slider 3a is made line symmetric widthwise. A typical example of the line symmetry is the shape of a center pad whose edge facing the inflow edge 10 is straight and almost parallel with it.
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公开(公告)号：JP2002100139A
公开(公告)日：2002-04-05
申请号：JP2000275184
申请日：2000-09-11
Applicant: IBM
Inventor： TOKIZONO AKIRA , KADOKAWA TOSHIHIKO , KANAMARU MASAYUKI , OTA SHUNICHIRO , KAGAMI NAOYUKI
Abstract: PROBLEM TO BE SOLVED: To remove contamination without the occurrence of fresh contamination by contact of a head and a disk. SOLUTION: Track following is performed in the outer peripheral part of the disk outside an effective recording region for a specified period after the head 3 is loaded onto the disk 1 from a ramp loading mechanism 17. The movement to the inner side of the disk and the movement to the outer side thereof are repeated in the outer peripheral part after the track following in the outer peripheral part of the disk. The velocity Vout of the outer side moving is set larger than the velocity Vin of the inner side moving, more preferably at about several times.
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Patent Agency Ranking3.发明专利
公开(公告)号：JP2003151229A
公开(公告)日：2003-05-23
申请号：JP2001343822
申请日：2001-11-08
Applicant: IBM
Inventor： TOKIZONO AKIRA , AONO SHIROO , OTA SHUNICHIRO , UNOKI TOSHIRO , HASHIMOTO MINORU
Abstract: PROBLEM TO BE SOLVED: To prevent undulation of a lubricating film on a magnetic disk and to decrease the writing defects occurring in this undulation. SOLUTION: The hard disk drive which reads out or writes data by a magnetic head 4 from the magnetic disk 2 rotating in accordance with a command from a host computer detects the moving quantity in the radial direction of the magnetic head 4 within a prescribed period and seeks the magnetic head 4 by the prescribed quantity when the detected moving quantity is small.
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公开(公告)号：JPH07262750A
公开(公告)日：1995-10-13
申请号：JP4669794
申请日：1994-03-17
Applicant: IBM
Inventor： OTA SHUNICHIRO , KANAMARU MASAYUKI , WATANUKI MASAAKI
Abstract: PURPOSE: To equaly and stably supply the suitable quantity of lubricant onto the surface of a magnetic disk for a long time by providing a clamp mechanism for fixing the disk to a spindle motor and a mechanism for fixing a lubricant containing member and a thin film while sandwiching them between the clamp mechanism and the magnetic disk. CONSTITUTION: This device has a lubricant containing member 14 for containing and holding certain quantity of lubricant suppliable onto a magnetic disk 10 for a long time, thin film 20 for supplying the prescribed quantity of lubricant onto the magnetic disk 10 while gradually making the lubricant permeable from this lubricant containing member 14, and clamp mechanism for fixing these lubricant containing member 14 and the thin film 20 together with the magnetic disk 10. The clamp mechanism has a clamp ring 16 and a screw mechanism 18, the thin film 20 is compressed by the screw mechanism 18, which is formed at the terminal part of the clamp mechanism, and fixed onto the magnetic disk 10 and corresponding to the quantity of this compression, the quantity of lubricant to be supplied onto the surface of the magnetic disk can be controlled.
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公开(公告)号：JP2002216328A
公开(公告)日：2002-08-02
申请号：JP2001001966
申请日：2001-01-09
Applicant: IBM
Inventor： BABA SACHIYO , KAWAMOTO YASUNORI , OTA SHUNICHIRO , KANAMARU MASAYUKI
Abstract: PROBLEM TO BE SOLVED: To provide a slider that can reduce read and write errors caused by particles and ensure the reliability. SOLUTION: This is a slider 3a facing the recording disk medium and supporting the data read-write head and has an air bearing surface formed between the inflow edge 10 and the outflow edge 11. It has a U shaped rail consisting of the side and cross rails 20-22 formed on the air bearing surface with its front edges positioned at the outflow edge 11 and landing pads 30a, 31a formed between the front edges of the side and cross rails 20-22 and the outflow edge 11. Of the landing pads 30a, 31a, the landing pad 31a facing close to the outer periphery of the disk is made to project at the side closer to the rail.
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公开(公告)号：JPH05307879A
公开(公告)日：1993-11-19
申请号：JP11157992
申请日：1992-04-30
Applicant: IBM
Inventor： KUROKI KENJI , HARADA YOSHINAO , OTA SHUNICHIRO
Abstract: PURPOSE: To execute a restriction and a mitigation, despite the change in relative temp. and relative humidity inside a hard disk drive by providing a wide surface area, in order to permit moisture absorption on the inner surface of a disk enclusure. CONSTITUTION: An anodically oxidized porous coat having porous surface structure is generated on the surface of an aluminum plate to be used in the disk enclosure, by the anodic oxidization method using oxalic acid. The hard disk drive is assembled by incorporating elements, such as a disk driving device 11 having a disk 11a and a head driving part 12, etc., having a head 12a inside the disk enclosure 10. Air volume inside the hard disk drive is 80ml, and the whole inner surface area of the enclosure 10 is about 3.2m . Thus, relative humidity inside the drive is lowered, when temp. is increased and absorption moisture on the inner surface of the enclusure 10 is vaporized. Conversely, vapor is absorbed on the surface inside the enclosure 10 when relative humidity is increased at the time of temp. lowering and temp. change is restricted.
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公开(公告)号：SG28215A1
公开(公告)日：1996-04-01
申请号：SG1995000093
申请日：1995-03-11
Applicant: IBM
Inventor： KANAMARU MASAYUKI , WATANUKI OSAAKI , OTA SHUNICHIRO
IPC: G11B25/04
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