[go: up one dir, main page]

FR1351464A - Narrow track recording magnetic head - wide track playback - Google Patents

Narrow track recording magnetic head - wide track playback

Info

Publication number
FR1351464A
FR1351464A FR915962A FR915962A FR1351464A FR 1351464 A FR1351464 A FR 1351464A FR 915962 A FR915962 A FR 915962A FR 915962 A FR915962 A FR 915962A FR 1351464 A FR1351464 A FR 1351464A
Authority
FR
France
Prior art keywords
magnetic head
track
recording magnetic
playback
wide
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
FR915962A
Other languages
French (fr)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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
Priority claimed from US154794A external-priority patent/US3155949A/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to FR915962A priority Critical patent/FR1351464A/en
Application granted granted Critical
Publication of FR1351464A publication Critical patent/FR1351464A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • 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
    • 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
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
FR915962A 1961-11-24 1962-11-20 Narrow track recording magnetic head - wide track playback Expired FR1351464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR915962A FR1351464A (en) 1961-11-24 1962-11-20 Narrow track recording magnetic head - wide track playback

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US154794A US3155949A (en) 1961-11-24 1961-11-24 Tunnel erase magnetic transducer
FR915962A FR1351464A (en) 1961-11-24 1962-11-20 Narrow track recording magnetic head - wide track playback

Publications (1)

Publication Number Publication Date
FR1351464A true FR1351464A (en) 1964-02-07

Family

ID=26198478

Family Applications (1)

Application Number Title Priority Date Filing Date
FR915962A Expired FR1351464A (en) 1961-11-24 1962-11-20 Narrow track recording magnetic head - wide track playback

Country Status (1)

Country Link
FR (1) FR1351464A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2208158A1 (en) * 1972-11-30 1974-06-21 Bertin & Cie
FR2401482A1 (en) * 1977-07-21 1979-03-23 Ibm MAGNETIC READ / WRITE AND ERASING HEAD WITH TUNNEL EFFECT
FR2431745A1 (en) * 1978-07-20 1980-02-15 Sony Corp MAGNETIC CARD RECORDING AND / OR REPRODUCING APPARATUS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2208158A1 (en) * 1972-11-30 1974-06-21 Bertin & Cie
FR2401482A1 (en) * 1977-07-21 1979-03-23 Ibm MAGNETIC READ / WRITE AND ERASING HEAD WITH TUNNEL EFFECT
FR2431745A1 (en) * 1978-07-20 1980-02-15 Sony Corp MAGNETIC CARD RECORDING AND / OR REPRODUCING APPARATUS

Similar Documents

Publication Publication Date Title
CH416746A (en) Magnetizable recording medium
FR1412758A (en) Soft magnetic recording disc
CH414188A (en) Cassette device with tape-shaped recording medium
CH430253A (en) Multi-track magnetic tape recorder
CH402439A (en) Cassette for tape-shaped recording media
DK109056C (en) Magnetic recording and reproducing apparatus.
CH415097A (en) Magnetic sound recording and / or reproducing device with cassette
FR1351464A (en) Narrow track recording magnetic head - wide track playback
FR1521038A (en) Magnetic recording on narrow tracks
CH446749A (en) Magnetic recording and playback device
FR1383599A (en) Magnetic recording head
FR1375115A (en) magnetic recording equipment
FR1500672A (en) Improvements to magnetic tape recording devices
BE592423A (en) Magnetic recording read head
FR1327549A (en) Magnetic head with wide track recording and narrow track playback
BE612559A (en) Magnetic recording material
CH419237A (en) Magnetic recording medium
FR1206391A (en) Device for the continuous reading of magnetic tapes, recorded on double tracks, by alternating and permanent unwinding
AT236671B (en) Recording or reproducing device with a tape-shaped recording medium
FR1301903A (en) Universal magnetic head for tape recorder
FR1261777A (en) Magnetic recording read head
FR1241491A (en) Magnetic recording read head
CH474808A (en) Magnetic tape recording and / or reproducing equipment
FR1261763A (en) Magnetic recording read head
CH410058A (en) Magnetic recording device