公开(公告)号：JPH08263937A

公开(公告)日：1996-10-11

申请号：JP3475896

申请日：1996-02-22

Applicant: IBM

Inventor： TEIMOSHII JIYOSEFU CHIEINAA ,  DEIIN EI HAAMAN JIYUNIA ,  SORU RONGERUBU ,  RUBOMIIRU TARASU ROMANKIU ,  EDOWAADO JIYON YARUMUCHIYAKU

IPC: G11B19/20 ,  G11B25/04 ,  G11B33/12 ,  H02K21/24

Abstract: PROBLEM TO BE SOLVED: To attain data write and read between a data storage magnetic disk and a stator having plural stator magnetic poles by including a data storage magnetic disk in which an integrated assembly between a data disk and a disk drive is supported rotatably. SOLUTION: A micro file 10 includes a magnetic storage disk 12 supported turnably and stores information in binary data bits. Each micro motor 14 is integrated with the disk 12, includes a rotor 16 integrated with the disk 12 as a one-piece assembly to drive the disk 12. The rotor 16 is extended radially outward and includes plural rotor magnetic poles 18 around the extended part of the rotor 16. Each micro motor 14 is provided with a stator 20 having plural stator magnetic poles 22 to be arranged on a circumference around the rotor 16 at an interval, to drive the rotor 16 in cooperation with each rotor pole 18 sequentially, to drive the disk 12 to allow an access head assembly 24 to write/read magnetically data.

公开(公告)号：JPH0628633A

公开(公告)日：1994-02-04

申请号：JP32763391

申请日：1991-12-11

Applicant: IBM

Inventor： ROBAATO EDOWAADO FUONTANA JIYU ,  RUBOMIIRU TARASU ROMANKIU ,  MEISON RAMAA UIRIAMUZU ZA SAAD

IPC: G11B5/31 ,  G11B5/39

Abstract: PURPOSE: To obtain an integrated thin film magnetic recording head which is provided with essentially independent read and write circuits and which can be designed highly efficiently. CONSTITUTION: The magnetic recording head is provided with an integrated, inductive writing, magnetoresistive(MR) reading thin film magnetic head provided with an open magnetic yoke 16 having outer legs and a center leg. The outer leg, with one ends superposed on each other, constitutes oppositely facing pole pieces having a conversion gap 28 between the pole pieces, while the center leg, with one end situated between the hole pieces, connects with the outer legs with the other end and constitutes the symmetric magnetic yoke 16. The center leg is provided with a hole opening, with an MR element 30 connected while crossing the hole opening. Each outer leg is equipped with a coil 18, 20; its direction is such that a magnetic flux generated by equal activation becomes equal and passes into opposite direction, while a net magnetic flux is not produced in the center leg. In the reading operation, magnetization rotates in the MR element through the reaction with a magnetic field read out by the conversion gap. In the writing operation, no magnetic flux flows in the center leg because of the symmetry of the magnetic yoke, thereby minimizing disturbance of the reading head due to write-in.

公开(公告)号：JPH08263978A

公开(公告)日：1996-10-11

申请号：JP3471696

申请日：1996-02-22

Applicant: IBM

Inventor： TEIMOSHII JIYOSEFU CHIEINAA ,  RUBOMIIRU TARASU ROMANKIU

IPC: G11B19/20 ,  G11B25/04 ,  G11B33/12 ,  H02K19/10 ,  H02K29/06 ,  H02K41/035

Abstract: PROBLEM TO BE SOLVED: To address data on a disk selectively by allowing an integrated micro file to have a magnetic disk supported rotatably to store data and a micro motor to drive the magnetic disk. SOLUTION: A micro motor 14 includes a rotor 16 integrated with a disk 12 as a one-piece assembly to drive the disk 12. The rotor 16 is extended radially outward and includes plural rotor magnetic poles 18 around the extended part of the rotor 16. Each micro motor 14 is provided with a stator 20 having plural stator magnetic poles 22 to be arranged on a circumference around the rotor 16 at an interval, to drive the rotor 16 in cooperation with each rotor pole 18 sequentially, to drive the disk 12 to allow a proper read/write head, that is, an access head 24 to write/read magnetically data.

公开(公告)号：JPH04228284A

公开(公告)日：1992-08-18

申请号：JP4218391

申请日：1991-02-15

Applicant: IBM

Inventor： ARUNABA GUPUTA ,  BERUGASEMU HABA ,  BURAIAN UOTSUSHIYUBOON HATSUSH ,  RUBOMIIRU TARASU ROMANKIU

IPC: B23K26/00 ,  B23K26/12 ,  B23K26/18 ,  B23K26/36 ,  C04B41/91 ,  C23F4/02 ,  G11B5/31 ,  G11B5/60 ,  H01L21/302

Abstract: PURPOSE: To accomplish laser etching of a substrate in a liquid by laser induced sonic cavitation at the substrate surface. CONSTITUTION: The preferred substrate 28 is laser energy absorbing and has a finite melting temp. The preferred liquid 12 is an organic or inorganic inert liquid which does not chemically react with a substrate at room temp. The laser 22 is preferably a copper vapor laser, but a chopped beam cw argon ion laser or a YAG laser adjusted to a low power output sufficient to avoid the formation of a recast layer can also be used. The laser parameters are adjusted for causing the growth and collapse of bubbles at the substrate surface. The laser etching has particular application in the fabrication of rails in magnetic head sliders and dicing of Al2 O3 -TiC, TiC, SiC, Si/SiO2 , and laser energy absorbing metals and metal oxides.