公开(公告)号：DE68912486D1

公开(公告)日：1994-03-03

申请号：DE68912486

申请日：1989-09-20

Applicant: IBM

Inventor： DESOUCHES ALAIN MICHEL ,  PAL GEORGE STEPHEN ,  SALO MICHAEL PAUL ,  ULLAH MUHAMMAD INAYET ,  CHURCH MARK ANTHONY ,  DESHPANDE ANNAYYA PRALHADRAO

IPC: B24B49/10 ,  B23Q17/22 ,  B24B37/04 ,  G11B5/39 ,  G11B5/127 ,  G11B5/187 ,  G11B5/245 ,  G11B5/31

Abstract: Each of a row of thin film magnetic transducers (12) formed on a substrate, comprises a magnetoresistive (MR) element, and the row is supported on a holder (18) which has an elongate H-shaped slot near one edge to form a beam member upon which the row is mounted. The beam member is capable of being deflected in a substantially quadratic curvature when subjected to pressure from a pressure transducer (22) at the middle of the beam member. The resistance of each of the MR elements is measured (by 28, 30) during lapping, and control signals are generated (by controller 32) to control the pressure transducers to control lapping with proper BALANCE and BOW and to terminate lapping when the desired MR element height is reached.

公开(公告)号：DE68912486T2

公开(公告)日：1994-06-23

申请号：DE68912486

申请日：1989-09-20

Applicant: IBM

Inventor： DESOUCHES ALAIN MICHEL ,  PAL GEORGE STEPHEN ,  SALO MICHAEL PAUL ,  ULLAH MUHAMMAD INAYET ,  CHURCH MARK ANTHONY ,  DESHPANDE ANNAYYA PRALHADRAO

IPC: B24B49/10 ,  B23Q17/22 ,  B24B37/04 ,  G11B5/39 ,  G11B5/127 ,  G11B5/187 ,  G11B5/245 ,  G11B5/31

Abstract: Each of a row of thin film magnetic transducers (12) formed on a substrate, comprises a magnetoresistive (MR) element, and the row is supported on a holder (18) which has an elongate H-shaped slot near one edge to form a beam member upon which the row is mounted. The beam member is capable of being deflected in a substantially quadratic curvature when subjected to pressure from a pressure transducer (22) at the middle of the beam member. The resistance of each of the MR elements is measured (by 28, 30) during lapping, and control signals are generated (by controller 32) to control the pressure transducers to control lapping with proper BALANCE and BOW and to terminate lapping when the desired MR element height is reached.

公开(公告)号：DE3482517D1

公开(公告)日：1990-07-19

申请号：DE3482517

申请日：1984-02-08

Applicant: IBM

Inventor： PAL GEORGE STEPHEN ,  SNYDER CHARLES GEORGE

IPC: G11B21/21 ,  G11B5/48 ,  G11B5/54

公开(公告)号：HK139894A

公开(公告)日：1994-12-16

申请号：HK139894

申请日：1994-12-08

Applicant: IBM

Inventor： PAL GEORGE STEPHEN ,  SNYDER CHARLES GEORGE

IPC: G11B21/21 ,  G11B5/48 ,  G11B5/54