NL182180C - Magnetisch schijfsubstraat voor registratie met grote opslagdichtheid. - Google Patents

Magnetisch schijfsubstraat voor registratie met grote opslagdichtheid.

Info

Publication number
NL182180C
NL182180C NLAANVRAGE7512229,A NL7512229A NL182180C NL 182180 C NL182180 C NL 182180C NL 7512229 A NL7512229 A NL 7512229A NL 182180 C NL182180 C NL 182180C
Authority
NL
Netherlands
Prior art keywords
registration
magnetic disk
disk substrate
storage density
great storage
Prior art date
Application number
NLAANVRAGE7512229,A
Other languages
English (en)
Dutch (nl)
Other versions
NL7512229A (nl
Original Assignee
Nippon Telegraph & Telephone
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 Nippon Telegraph & Telephone filed Critical Nippon Telegraph & Telephone
Publication of NL7512229A publication Critical patent/NL7512229A/xx
Application granted granted Critical
Publication of NL182180C publication Critical patent/NL182180C/xx

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
    • G11B5/74—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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73913—Composites or coated substrates
    • 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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G11B5/73919—Aluminium or titanium elemental or alloy substrates

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
NLAANVRAGE7512229,A 1974-10-24 1975-10-17 Magnetisch schijfsubstraat voor registratie met grote opslagdichtheid. NL182180C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12194874A JPS5337203B2 (enrdf_load_html_response) 1974-10-24 1974-10-24

Publications (2)

Publication Number Publication Date
NL7512229A NL7512229A (nl) 1976-04-27
NL182180C true NL182180C (nl) 1988-01-18

Family

ID=14823871

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7512229,A NL182180C (nl) 1974-10-24 1975-10-17 Magnetisch schijfsubstraat voor registratie met grote opslagdichtheid.

Country Status (5)

Country Link
JP (1) JPS5337203B2 (enrdf_load_html_response)
DE (1) DE2547408A1 (enrdf_load_html_response)
FR (1) FR2289022A1 (enrdf_load_html_response)
GB (1) GB1493160A (enrdf_load_html_response)
NL (1) NL182180C (enrdf_load_html_response)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5168207A (ja) * 1974-12-10 1976-06-12 Fujitsu Ltd Jikideisukuyokibanno seizohoho
JPS5760957Y2 (enrdf_load_html_response) * 1978-09-14 1982-12-25
DE3014718A1 (de) * 1980-04-17 1981-10-22 Ibm Deutschland Gmbh, 7000 Stuttgart Mehrschichtige magnetische duennfilmplatte mit kunstharzschicht sowie verfahren zur herstellung derselben
JPS59180832A (ja) * 1983-03-31 1984-10-15 Nippon Light Metal Co Ltd 磁気記録材用アルマイト基板
JPS6022733A (ja) * 1983-07-19 1985-02-05 Hitachi Metals Ltd 磁気デイスク基板
US4552820A (en) * 1984-04-25 1985-11-12 Lin Data Corporation Disc media
GB2191511A (en) * 1986-06-10 1987-12-16 Komatsu Mfg Co Ltd Fabricating an electro-photographic photosensor

Also Published As

Publication number Publication date
JPS5148303A (enrdf_load_html_response) 1976-04-26
NL7512229A (nl) 1976-04-27
FR2289022A1 (fr) 1976-05-21
DE2547408A1 (de) 1976-04-29
FR2289022B1 (enrdf_load_html_response) 1980-01-04
GB1493160A (en) 1977-11-23
JPS5337203B2 (enrdf_load_html_response) 1978-10-07

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Legal Events

Date Code Title Description
BC A request for examination has been filed
A85 Still pending on 85-01-01
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

V4 Lapsed because of reaching the maximum lifetime of a patent

Free format text: 951017