FR2522857B1 - DEVICE FOR WRITING AND / OR READING INFORMATION ON A MAGNETIC MEDIUM, WITH REDUCED FRICTION AGAINST THIS MEDIUM - Google Patents

DEVICE FOR WRITING AND / OR READING INFORMATION ON A MAGNETIC MEDIUM, WITH REDUCED FRICTION AGAINST THIS MEDIUM

Info

Publication number
FR2522857B1
FR2522857B1 FR8203548A FR8203548A FR2522857B1 FR 2522857 B1 FR2522857 B1 FR 2522857B1 FR 8203548 A FR8203548 A FR 8203548A FR 8203548 A FR8203548 A FR 8203548A FR 2522857 B1 FR2522857 B1 FR 2522857B1
Authority
FR
France
Prior art keywords
medium
writing
reading information
friction against
reduced friction
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.)
Expired
Application number
FR8203548A
Other languages
French (fr)
Other versions
FR2522857A1 (en
Inventor
Bernard Badet
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.)
CII HONEYWELL BULL
Original Assignee
CII HONEYWELL BULL
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 CII HONEYWELL BULL filed Critical CII HONEYWELL BULL
Priority to FR8203548A priority Critical patent/FR2522857B1/en
Publication of FR2522857A1 publication Critical patent/FR2522857A1/en
Application granted granted Critical
Publication of FR2522857B1 publication Critical patent/FR2522857B1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
FR8203548A 1982-03-03 1982-03-03 DEVICE FOR WRITING AND / OR READING INFORMATION ON A MAGNETIC MEDIUM, WITH REDUCED FRICTION AGAINST THIS MEDIUM Expired FR2522857B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8203548A FR2522857B1 (en) 1982-03-03 1982-03-03 DEVICE FOR WRITING AND / OR READING INFORMATION ON A MAGNETIC MEDIUM, WITH REDUCED FRICTION AGAINST THIS MEDIUM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8203548A FR2522857B1 (en) 1982-03-03 1982-03-03 DEVICE FOR WRITING AND / OR READING INFORMATION ON A MAGNETIC MEDIUM, WITH REDUCED FRICTION AGAINST THIS MEDIUM

Publications (2)

Publication Number Publication Date
FR2522857A1 FR2522857A1 (en) 1983-09-09
FR2522857B1 true FR2522857B1 (en) 1988-01-22

Family

ID=9271557

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8203548A Expired FR2522857B1 (en) 1982-03-03 1982-03-03 DEVICE FOR WRITING AND / OR READING INFORMATION ON A MAGNETIC MEDIUM, WITH REDUCED FRICTION AGAINST THIS MEDIUM

Country Status (1)

Country Link
FR (1) FR2522857B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633724B1 (en) * 1988-06-29 1990-08-10 Bull Sa METHOD FOR MAGNETICALLY CHARACTERIZING THE RECORDING LAYER OF A MAGNETIC INFORMATION MEDIUM AND DEVICE FOR CARRYING OUT SAID METHOD

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE342842C (en) *
GB458255A (en) * 1935-05-15 1936-12-15 Marconi Wireless Telegraph Co Improvements in or relating to telegraphones and like magnetic recording or pick-up apparatus
US2585932A (en) * 1948-07-29 1952-02-19 Magnetic Equipment Inc Device for reducing noise in magnetic recording systems
US2758905A (en) * 1951-01-29 1956-08-14 Univ California Magnetic recording apparatus
DE865219C (en) * 1951-04-21 1953-02-02 Siemens Ag Magnetic head for magnetic recorders
DE1025640B (en) * 1953-04-24 1958-03-06 Daniel Tefi Apparatebau Magnetic sound device with combined magnetic head
FR1085866A (en) * 1953-05-28 1955-02-08 Acec Holder for magnetic recorder heads
US2802905A (en) * 1953-07-30 1957-08-13 Bell Telephone Labor Inc Electromagnetic transducer mounting
GB776348A (en) * 1954-02-08 1957-06-05 British Thomson Houston Co Ltd Improvements in and relating to recording or reproducing magnetic head
GB819349A (en) * 1955-06-28 1959-09-02 Int Computers & Tabulators Ltd Improvements in or relating to magnetic recording and/or reproducing apparatus
US3313889A (en) * 1961-06-12 1967-04-11 Machinski Edward Magnetic head with thin edge pole pieces
US3414895A (en) * 1966-01-14 1968-12-03 Honeywell Inc Magnetic head with means for assuring firm tape-head contact
DE2429453A1 (en) * 1974-06-19 1976-01-08 Dual Gebrueder Steidinger Pressure arrangement on magnetic head in tape recorder - presses magnetic tape against head using elastic leaf spring
FR2298850A1 (en) * 1975-01-23 1976-08-20 Honeywell Bull Soc Ind DEVICE FOR RECORDING INFORMATION ON A MAGNETIC MEDIA
US4138702A (en) * 1975-01-23 1979-02-06 Compagnie Honeywell Bull Head arrangement for perpendicular recording information on a magnetic record carrier

Also Published As

Publication number Publication date
FR2522857A1 (en) 1983-09-09

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