WO1988006334A1 - Couche de surface pour tete magnetique - Google Patents

Couche de surface pour tete magnetique Download PDF

Info

Publication number
WO1988006334A1
WO1988006334A1 PCT/US1988/000438 US8800438W WO8806334A1 WO 1988006334 A1 WO1988006334 A1 WO 1988006334A1 US 8800438 W US8800438 W US 8800438W WO 8806334 A1 WO8806334 A1 WO 8806334A1
Authority
WO
WIPO (PCT)
Prior art keywords
head
layer
disk
carbon
recording element
Prior art date
Application number
PCT/US1988/000438
Other languages
English (en)
Inventor
John C. Scott
Original Assignee
Akashic Memories Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Akashic Memories Corporation filed Critical Akashic Memories Corporation
Publication of WO1988006334A1 publication Critical patent/WO1988006334A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/255—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for protection against wear

Definitions

  • FIG. 1 Shown in Figure 1 , is a side view of a slider 11 having a base portion 13 bonded to a flexure 15 for attaching the slider to a return arm (not shown) in a typical disk drive.
  • a magnetic transducer hereinafter called read/write head 17, which is typically constructed of a ferrite or other suitable magnetic material as is well known in the art for reading from, and writing to, a magnetic disk.
  • the head 17 has a gap 20 between its magnetic pole pieces as is also traditional.
  • the slider has two rails 24 which have air bearing surfaces IS where the slider would normally contact the disk when the disk is not moving. Power for the head 17 is provided by electrical leads 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

Une couche anti-usure est vaporisée sur une tête d'enregistrement magnétique du genre se sustentant sur un coussin d'air au-dessus d'une surface de disque en rotation. Le fait de mettre une couche d'usure sur la surface portée par le coussin d'air réduit la friction entre la tête et le disque, prolongeant ainsi la vie du disque et de la tête. Dans le mode de réalisation préféré, une couche de chrome d'une épaisseur de 50 A (19) est vaporisée directement sur la surface portée par le coussin d'air et une couche de carbone d'une épaisseur de 200 A (21) est vaporisée sur la couche de chrome. Des tests ont démontré que la durée de vie d'un disque augmente de 50% grâce à l'utilisation d'une tête avec une telle couche anti-usure.
PCT/US1988/000438 1987-02-13 1988-02-12 Couche de surface pour tete magnetique WO1988006334A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1493287A 1987-02-13 1987-02-13
US014,932 1987-02-13

Publications (1)

Publication Number Publication Date
WO1988006334A1 true WO1988006334A1 (fr) 1988-08-25

Family

ID=21768632

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1988/000438 WO1988006334A1 (fr) 1987-02-13 1988-02-12 Couche de surface pour tete magnetique

Country Status (1)

Country Link
WO (1) WO1988006334A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350412A1 (fr) * 1988-07-05 1990-01-10 Thomson-Csf Dispositif en matériau magnétique à couche anti-usure et applications à une tête d'enregistrement-lecture et à un disque d'enregistrement
EP0493902A2 (fr) * 1990-12-27 1992-07-08 International Business Machines Corporation Glisseur pour tête magnétique et procédé de fabrication
US5271802A (en) * 1990-12-27 1993-12-21 International Business Machines Corporation Method for making a thin film magnetic head having a protective coating
EP0617407A2 (fr) * 1993-03-25 1994-09-28 International Business Machines Corporation Mémoire à disque d'enregistrement par contact et assemblage de tête pour utilisation dans celle-ci
ES2112169A1 (es) * 1994-07-13 1998-03-16 Sansung Electronics Co Ltd Metodo de fabricacion de un cabezal magnetico.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411963A (en) * 1976-10-29 1983-10-25 Aine Harry E Thin film recording and method of making
US4583145A (en) * 1983-02-05 1986-04-15 International Business Machines Corporation Apparatus comprising a lubricant-coated magnetic disc and a magnetic head, and method of making said apparatus
US4647494A (en) * 1985-10-31 1987-03-03 International Business Machines Corporation Silicon/carbon protection of metallic magnetic structures

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411963A (en) * 1976-10-29 1983-10-25 Aine Harry E Thin film recording and method of making
US4583145A (en) * 1983-02-05 1986-04-15 International Business Machines Corporation Apparatus comprising a lubricant-coated magnetic disc and a magnetic head, and method of making said apparatus
US4647494A (en) * 1985-10-31 1987-03-03 International Business Machines Corporation Silicon/carbon protection of metallic magnetic structures

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350412A1 (fr) * 1988-07-05 1990-01-10 Thomson-Csf Dispositif en matériau magnétique à couche anti-usure et applications à une tête d'enregistrement-lecture et à un disque d'enregistrement
FR2634051A1 (fr) * 1988-07-05 1990-01-12 Thomson Csf Dispositif en materiau magnetique a couche anti-usure et applications a une tete d'enregistrement-lecture et a un disque d'enregistrement
WO1990000793A1 (fr) * 1988-07-05 1990-01-25 Thomson-Csf Dispositif en materiau magnetique a couche anti-usure et applications a une tete d'enregistrement-lecture et a un disque d'enregistrement
EP0493902A2 (fr) * 1990-12-27 1992-07-08 International Business Machines Corporation Glisseur pour tête magnétique et procédé de fabrication
EP0493902A3 (en) * 1990-12-27 1992-12-23 International Business Machines Corporation Magnetic head slider and method for making same
US5271802A (en) * 1990-12-27 1993-12-21 International Business Machines Corporation Method for making a thin film magnetic head having a protective coating
EP0617407A2 (fr) * 1993-03-25 1994-09-28 International Business Machines Corporation Mémoire à disque d'enregistrement par contact et assemblage de tête pour utilisation dans celle-ci
EP0617407A3 (fr) * 1993-03-25 1995-11-29 Ibm Mémoire à disque d'enregistrement par contact et assemblage de tête pour utilisation dans celle-ci.
US5734519A (en) * 1993-03-25 1998-03-31 International Business Machines Corporation Contact magnetic recording disk file with improved head assembly
CN1039854C (zh) * 1993-03-25 1998-09-16 国际商业机器公司 带有改进性能的磁头组件的接触式磁盘驱动器
ES2112169A1 (es) * 1994-07-13 1998-03-16 Sansung Electronics Co Ltd Metodo de fabricacion de un cabezal magnetico.

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