FR2402921A1 - Element d'enregistrement magnetique et son procede de fabrication - Google Patents

Element d'enregistrement magnetique et son procede de fabrication

Info

Publication number
FR2402921A1
FR2402921A1 FR7727073A FR7727073A FR2402921A1 FR 2402921 A1 FR2402921 A1 FR 2402921A1 FR 7727073 A FR7727073 A FR 7727073A FR 7727073 A FR7727073 A FR 7727073A FR 2402921 A1 FR2402921 A1 FR 2402921A1
Authority
FR
France
Prior art keywords
recording element
magnetic
magnetic recording
manufacturing process
layer
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7727073A
Other languages
English (en)
Other versions
FR2402921B1 (fr
Inventor
Henri Morizot
Andre Lucan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bull SA
Original Assignee
Bull SA
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 Bull SA filed Critical Bull SA
Priority to FR7727073A priority Critical patent/FR2402921A1/fr
Priority to US05/934,849 priority patent/US4205120A/en
Priority to IT27157/78A priority patent/IT1174373B/it
Priority to GB7835682A priority patent/GB2006677B/en
Priority to JP10920678A priority patent/JPS5454048A/ja
Priority to DE19782839046 priority patent/DE2839046A1/de
Publication of FR2402921A1 publication Critical patent/FR2402921A1/fr
Application granted granted Critical
Publication of FR2402921B1 publication Critical patent/FR2402921B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G19/00—Processes using magnetic patterns; Apparatus therefor, i.e. magnetography
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/928—Magnetic property
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12903—Cu-base component
    • Y10T428/12917—Next to Fe-base component

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

L'invention concerne un élément d'enregistrement magnétique qui permet d'obtenir des domaines de magnétisation parfaitement délimités. Cet élément d'enregistrement magnétique 10 est constitué d'un support 11 en matériau à haute perméabilité magnétique, revêtu dune couche 12 de matériau amagnétique, elle-même recouverte d'une couche 13 de matériau magnétique. Cet élément d'enregistrement trouve son application dans la réalisation des machines à imprimer magnétiques.
FR7727073A 1977-09-07 1977-09-07 Element d'enregistrement magnetique et son procede de fabrication Granted FR2402921A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7727073A FR2402921A1 (fr) 1977-09-07 1977-09-07 Element d'enregistrement magnetique et son procede de fabrication
US05/934,849 US4205120A (en) 1977-09-07 1978-08-18 Magnetic recording element
IT27157/78A IT1174373B (it) 1977-09-07 1978-08-30 Elemento di registrazione magnetica e relativo metodo di fabbricazione
GB7835682A GB2006677B (en) 1977-09-07 1978-09-05 Magnetic recording element and a methdo of manufacturing it
JP10920678A JPS5454048A (en) 1977-09-07 1978-09-07 Magnetic recording element and production thereof
DE19782839046 DE2839046A1 (de) 1977-09-07 1978-09-07 Magnetisches speicherelement und verfahren zu seiner herstellung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7727073A FR2402921A1 (fr) 1977-09-07 1977-09-07 Element d'enregistrement magnetique et son procede de fabrication

Publications (2)

Publication Number Publication Date
FR2402921A1 true FR2402921A1 (fr) 1979-04-06
FR2402921B1 FR2402921B1 (fr) 1980-04-18

Family

ID=9195124

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7727073A Granted FR2402921A1 (fr) 1977-09-07 1977-09-07 Element d'enregistrement magnetique et son procede de fabrication

Country Status (6)

Country Link
US (1) US4205120A (fr)
JP (1) JPS5454048A (fr)
DE (1) DE2839046A1 (fr)
FR (1) FR2402921A1 (fr)
GB (1) GB2006677B (fr)
IT (1) IT1174373B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2490847A1 (fr) * 1980-09-22 1982-03-26 Cii Honeywell Bull Element d'enregistrement magnetique
JPS5828356B2 (ja) 1980-12-29 1983-06-15 新日本製鐵株式会社 溶接性にすぐれたクロムめっき鋼板
JPS589176A (ja) * 1981-07-10 1983-01-19 Fuji Xerox Co Ltd 磁気潜像形成装置
FR2541011A1 (fr) * 1983-02-11 1984-08-17 Cii Honeywell Bull Dispositif pour convertir des signaux electriques representatifs de donnees en un ensemble de points saillants constituant l'image de ces donnees
CA1234891A (fr) * 1983-10-20 1988-04-05 746278 Ontario Limited D/B/A I.D. Systems Canada Vignette pour systeme de securite
US5764429A (en) * 1996-04-29 1998-06-09 Eastman Kodak Company Magnetic writing of repetitive information on magnetic wheel and magnization head for media

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE565082A (fr) * 1957-02-27
DE1596612A1 (de) * 1965-10-27 1971-03-18 Ppg Industries Inc Verfahren und Vorrichtung zum Biegen von Glasscheiben mittels Biegepressen
US3459517A (en) * 1966-04-13 1969-08-05 Siemens Ag Memory element with stacked magnetic layers
US3471272A (en) * 1966-09-20 1969-10-07 Thin Film Inc Magnetic storage medium
US3702239A (en) * 1969-03-17 1972-11-07 Sperry Rand Corp Magnetic storage medium
US3715793A (en) * 1970-05-04 1973-02-13 Honeywell Inc Plated super-coat and electrolyte
US3886052A (en) * 1970-07-20 1975-05-27 Digital Equipment Corp Method of making a magnetic recording disc
US3756788A (en) * 1970-10-12 1973-09-04 C Whetstone Laminated magnetic material
US3866192A (en) * 1973-03-01 1975-02-11 Honeywell Inc Plated wire memory element
US3853717A (en) * 1973-06-29 1974-12-10 Sperry Rand Corp Plated wire memory
FR2298850A1 (fr) * 1975-01-23 1976-08-20 Honeywell Bull Soc Ind Dispositif d'enregistrement d'informations sur un support magnetique

Also Published As

Publication number Publication date
FR2402921B1 (fr) 1980-04-18
IT7827157A0 (it) 1978-08-30
JPS5454048A (en) 1979-04-27
GB2006677B (en) 1982-01-20
IT1174373B (it) 1987-07-01
GB2006677A (en) 1979-05-10
DE2839046A1 (de) 1979-03-15
JPH0141990B2 (fr) 1989-09-08
DE2839046C2 (fr) 1989-06-15
US4205120A (en) 1980-05-27

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Legal Events

Date Code Title Description
ST Notification of lapse
ST Notification of lapse