公开(公告)号：WO02056305A3

公开(公告)日：2002-12-05

申请号：PCT/GB0105775

申请日：2001-12-24

Applicant: IBM ,  IBM UK ,  BABA SACHIYO ,  KAWAMOTO YASUNORI ,  OHTA SHUNICHIROH

Inventor： BABA SACHIYO ,  KAWAMOTO YASUNORI ,  OHTA SHUNICHIROH

IPC: G11B5/60 ,  G11B21/21

CPC classification number: G11B5/6005 ,  G11B21/21

Abstract: To enable servo information to be written in a high performance HDD having fast rotation speed and high recording density properties, as well as assure the reliability of the HDD for reading/writing data. A center pad (53a) of a slider (3a) is formed as a line-symmetrical shape in the width direction. The shape of the center pad is a typical example of such the line-symmetry; a side of the center pad, which faces a leading edge (10), is formed linearly almost in parallel to the leading edge (10).

Abstract translation: 为了能够将伺服信息写入具有快速旋转速度和高记录密度特性的高性能HDD中，并确保HDD读取/写入数据的可靠性。 滑块（3a）的中心垫（53a）在宽度方向上形成为线对称形状。 中心垫的形状是这种线对称的典型例子; 中心垫的面向前缘（10）的一侧几乎与前缘（10）平行地线性形成。

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

IPC: G11B5/60 ,  G11B21/21

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.

公开(公告)号：JP2001229637A

公开(公告)日：2001-08-24

申请号：JP2000031948

申请日：2000-02-09

Applicant: IBM

Inventor： FUKUSHIMA YUKIO ,  UEDA TETSUO ,  BABA SACHIYO ,  TANAKA HIDETSUGU

IPC: G11B21/03 ,  G11B5/02 ,  G11B5/60 ,  G11B21/21

Abstract: PROBLEM TO BE SOLVED: To provide a method for detecting the abnormality of the floating amount of a magnetic head by simple method, a data write method using the detection method and an HDD device for realizing the methods. SOLUTION: When a write operation is started, the gain of servo signals is decided on the basis of the head part (preamble) of the servo signals reproduced by an AGC 31, and the servo signals of a following part are amplified. Then, the gain of the AGC 31 held in the register of a channel control part 36 is compared with a reference value to detect abnormality of the floating amount of the magnetic head 12.

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

IPC: G11B5/60 ,  G11B21/21

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.

公开(公告)号：JP2000137967A

公开(公告)日：2000-05-16

申请号：JP30890598

申请日：1998-10-29

Applicant: IBM

Inventor： TSUCHIDA HIROYASU ,  TSUDA SHINGO ,  BABA SACHIYO ,  SATO KIYOSHI

IPC: G11B21/21 ,  G11B5/48

Abstract: PROBLEM TO BE SOLVED: To reduce resonance caused by an air flow in a driving device by providing an opening portion having a specified aperture in a rib erected in the longitudinal direction of an arm section having a head slider attached to its tip. SOLUTION: A head suspension assembly(HSA) is provided with an arm section 3a having a head slider 2 attached to its tip, and the head slider 2 is loaded on a disk side by a spring, for example by a 2g load. Ribs 3b are formed on both sides of the longitudinal direction of the arm section 3a to maintain rigidity. In this case, plural opening portions 3c are formed in each of the ribs 3b to reduce a projection area. When the arm section 3a is formed by stainless steel machining, since the opening portion 3c is formed by etching, the dimension of the opening portion 3c is set larger than the plate thickness of the stainless steel, e.g. about 60 μm. By setting the aperture of the opening portion 3c with respect to the rib 3b equal to 10% or more, Karman's vortex generated in the downstream side of the rib 3b is reduced.