MY113928A - Magnetic disc and data writing/reading-out method - Google Patents

Magnetic disc and data writing/reading-out method

Info

Publication number
MY113928A
MY113928A MYPI96004430A MYPI19964430A MY113928A MY 113928 A MY113928 A MY 113928A MY PI96004430 A MYPI96004430 A MY PI96004430A MY PI19964430 A MYPI19964430 A MY PI19964430A MY 113928 A MY113928 A MY 113928A
Authority
MY
Malaysia
Prior art keywords
zone
magnetic head
height
projections
css
Prior art date
Application number
MYPI96004430A
Inventor
Arita Yoji
Seo Yuzo
Original Assignee
Showa Denko Kk
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 Showa Denko Kk filed Critical Showa Denko Kk
Publication of MY113928A publication Critical patent/MY113928A/en

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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8408—Processes or apparatus specially adapted for manufacturing record carriers protecting the magnetic layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Record Carriers (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

THE MAGNETIC HEAD CAN CONDUCT A STABLE CSS OPERATION WHILE SEEKING BY USING A DISC DRIVE HAVING A MAGNETIC HEAD FOR WRITING/READING-OUT DATA FROM/TO A MAGNETIC DISC, WHILE FLYING THE MAGNETIC HEAD AT A PREDETERMINED FLYING HEIGHT, WHICH THE MAGNETIC DISC COMPRISING A CONTACT START AND STOP (CSS) ZONE COMPRISING A TAKING-OFF/LANDING REGION AND A STOPPING REGION, FOR A CONTACT START AND STOP OPERATION OF THE MAGNETIC HEAD AND A DATE ZONE FOR WRITING/READING-OUT DATA, WHEREIN A PLURALITY OF PROJECTIONS ARE PRESENT IN THE CSS ZONE, THE HEIGHT OF THE PROJECTIONS IN THE TAKING-OFF/LANDING REGION DECREASES FROM INNER TO OUTER IN A RADIAL DIRECTION OF THE DISC, AN AVERAGE GRADIENT FOR THE HEIGHT OF THE PROJECTIONS IN THE TAKING-OFF/LANDING REGION IS 1 X 10-6 TO 5 X 10-5, THE MAXIMUM HEIGHT OF THE PROJECTIONS IN THE CSS ZONE IS HIGHER THAN A FLYING HEIGHT OF A MAGNETIC HEAD IN THE DATA ZONE, AND THE MINIMUM HEIGHT OF THE PROJECTIONS IN THE CSS ZONE IS LOWER THAN THE FLYING HEIGHT OF THE MAGNETIC HEAD IN THE DATA ZONE.FIGURE 1
MYPI96004430A 1995-10-25 1996-10-24 Magnetic disc and data writing/reading-out method MY113928A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30053795 1995-10-25

Publications (1)

Publication Number Publication Date
MY113928A true MY113928A (en) 2002-06-29

Family

ID=17886025

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI96004430A MY113928A (en) 1995-10-25 1996-10-24 Magnetic disc and data writing/reading-out method

Country Status (3)

Country Link
DE (1) DE19644484A1 (en)
MY (1) MY113928A (en)
SG (1) SG42444A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263512B1 (en) * 1986-10-09 1994-06-01 Asahi Glass Company Ltd. Glass substrate for a magnetic disc and process for its production
JPH077508B2 (en) * 1988-11-16 1995-01-30 株式会社東芝 Magnetic disk manufacturing method
US5656349A (en) * 1990-07-04 1997-08-12 Hitachi, Ltd. Magnetic disk, method of manufacturing the same and magnetic disk apparatus including the magnetic disk
JPH0512648A (en) * 1991-05-01 1993-01-22 Hitachi Maxell Ltd Magnetic disk
US5166006A (en) * 1991-06-03 1992-11-24 Hmt Technology Corporation Textured thin-film substrate and method
JP3018762B2 (en) * 1992-08-06 2000-03-13 富士電機株式会社 Magnetic recording medium and method of manufacturing the same
JPH06318381A (en) * 1992-08-19 1994-11-15 Komag Inc Hard disk drive device, magnetic disc and read light head
US5534321A (en) * 1993-05-20 1996-07-09 Corning Incorporated Disk substrate for magnetic memory devices

Also Published As

Publication number Publication date
DE19644484A1 (en) 1997-04-30
SG42444A1 (en) 1997-08-15

Similar Documents

Publication Publication Date Title
GB2345377A (en) Constant density servo information in a disc drive
EP0110006B1 (en) Apparatus and method for releasing the magnetic head in a magnetic disk file
DE68928689D1 (en) System and method for formatting recording media with high storage density
EP2157574A3 (en) Optical disk and a method for reproducing data from such an optical disk
HK54995A (en) Method of producing head core slider for rigid magnetic disk drive utilizing laser-induced etching.
EP0321941A3 (en) Process for identifying disks and automatically configuring a disk drive system
AU6184590A (en) Optical recording medium, method for recording information and method for reproducing information
EP0911825A3 (en) Recording apparatus, recording method, playback apparatus, playback method, recording/playback apparatus, recording/playback method, presentation medium and recording medium
EP0215133A4 (en) Method and apparatus of constructing and recording list of recorded data in postscript-type optical disk.
EP0829853A3 (en) Multi-track servo recording system
EP0255188A3 (en) Method of recording, reproducing and erasing information on an optical disk
EP0400927A3 (en) Recording and reproducing apparatus using opto-magneto media
EP0423661A3 (en) Dual magnetic head and method for writing on very high track density and conventional track density floppy disk
EP0784313A3 (en) Control information recording method and apparatus, information recording method and apparatus, and information record medium
CA2030183A1 (en) Self-synchronizing servo control system and servo data code for high density disk drives
WO2001016943B1 (en) Slider for disc storage system
MY104214A (en) A thin film magnetic read/write head and method of forming the same.
MY113928A (en) Magnetic disc and data writing/reading-out method
EP0356763A3 (en) Apparatus and method of accessing a medium with low power consumption
EP0285452A3 (en) Magnetic disk apparatus using both servo-surface servo and data-surface servo
AU644611B2 (en) Tracking control circuit and method
EP0402912A3 (en) Disk memory system
JPS5534303A (en) Head positioning servo system in magnetic disc device
EP0339672A3 (en) Sampled servo type optical recording medium and optical recording apparatus using the same
JPS6433752A (en) Optical disk device