JPS567222A - Magnetic head unit - Google Patents

Magnetic head unit

Info

Publication number
JPS567222A
JPS567222A JP8322879A JP8322879A JPS567222A JP S567222 A JPS567222 A JP S567222A JP 8322879 A JP8322879 A JP 8322879A JP 8322879 A JP8322879 A JP 8322879A JP S567222 A JPS567222 A JP S567222A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic path
recording
head
switching means
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.)
Pending
Application number
JP8322879A
Other languages
Japanese (ja)
Inventor
Tetsuo Sekiya
Yutaka Hayata
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.)
Sony Corp
Original Assignee
Sony 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
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP8322879A priority Critical patent/JPS567222A/en
Publication of JPS567222A publication Critical patent/JPS567222A/en
Pending legal-status Critical Current

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
    • G11B5/127—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
    • G11B5/245—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 controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
    • 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
    • G11B15/125—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 conditioned by the operating function of the apparatus
    • 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
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To obtain a magnetic head unit which is provided with the magnetic material which forms a prescribed-form magnetic path through the gap, a coil, a magnetosensing element, and a magnetic path switching means and can become a recording head by closing the magnetic path for recording and can become a reproducing head by opening the magnetic path for reproducing. CONSTITUTION:A magnetic head unit is constituted by providing magnetic material 3 which forms a prescribed-form magnetic path through prescribed gap 5, coil 4 wound around this magnetic material 3, magnetosensing element 7 arranged in gap 5, and magnetic path switching means 12 which opens and closes selectively the magnetic path. As a result, this unit becomes a recording head for recording by not only closing the magnetic path by magnetic switching means 12 but also supplying the recording input to coil 4 and becomes a reproducing head, which takes out the reproduced output by magnetosensing element 7, by opening the magnetic path by magnetic switching means 12. Thus, recording and reproducing can be performed by the same magnetic head.
JP8322879A 1979-06-29 1979-06-29 Magnetic head unit Pending JPS567222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8322879A JPS567222A (en) 1979-06-29 1979-06-29 Magnetic head unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8322879A JPS567222A (en) 1979-06-29 1979-06-29 Magnetic head unit

Publications (1)

Publication Number Publication Date
JPS567222A true JPS567222A (en) 1981-01-24

Family

ID=13796453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8322879A Pending JPS567222A (en) 1979-06-29 1979-06-29 Magnetic head unit

Country Status (1)

Country Link
JP (1) JPS567222A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053655A2 (en) * 1980-12-08 1982-06-16 International Business Machines Corporation Velocity indication apparatus and magnetic recording apparatus including same
JPS58166510A (en) * 1982-03-29 1983-10-01 Toshiba Corp Magnetic reproducing device
JPS592204A (en) * 1982-06-25 1984-01-07 Toshiba Corp Magnetic reproducer
JPS593706A (en) * 1982-06-30 1984-01-10 Toshiba Corp Magnetic recording and reproducing device
EP0549876A1 (en) * 1991-12-16 1993-07-07 Read-Rite Corporation Read-write magnetic head with flux sensing read element

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053655A2 (en) * 1980-12-08 1982-06-16 International Business Machines Corporation Velocity indication apparatus and magnetic recording apparatus including same
JPS58166510A (en) * 1982-03-29 1983-10-01 Toshiba Corp Magnetic reproducing device
JPH0370843B2 (en) * 1982-03-29 1991-11-11 Tokyo Shibaura Electric Co
JPS592204A (en) * 1982-06-25 1984-01-07 Toshiba Corp Magnetic reproducer
JPH0373042B2 (en) * 1982-06-25 1991-11-20 Tokyo Shibaura Electric Co
JPS593706A (en) * 1982-06-30 1984-01-10 Toshiba Corp Magnetic recording and reproducing device
JPH0370845B2 (en) * 1982-06-30 1991-11-11 Tokyo Shibaura Electric Co
EP0549876A1 (en) * 1991-12-16 1993-07-07 Read-Rite Corporation Read-write magnetic head with flux sensing read element

Similar Documents

Publication Publication Date Title
JPS51119204A (en) Magnetically recording element
JPS567222A (en) Magnetic head unit
JPS53116809A (en) Magnetic head core
JPS5211921A (en) Magnetic head
JPS57205810A (en) Vertical magnetization type magnetic head
JPS5397409A (en) Magnetic head core and its production
JPS5674809A (en) Vertical recording/reproducing magnetic head
JPS53116810A (en) Magnetic head core
JPS5315811A (en) Magnetically recording and reproducing system
JPS5499611A (en) Magnetic head core
JPS5736423A (en) Magnetic head device
JPS5532285A (en) Multi-channel erasing head unit
JPS5758221A (en) Magnetic head device
JPS5651019A (en) Composite type magnetic head
JPS5264910A (en) Multi-element magnetic head
JPS57172523A (en) Magnetic head device
JPS5593523A (en) Multi-channel magnetic head
JPS57103116A (en) Magnetic head
JPS5512520A (en) Magnetic recording and reproducing unit using cassette for mobile mounting
JPS6462809A (en) Horizontal magnetic head
JPS5330309A (en) Sound-recording magnetic head
JPS5624A (en) Magnetic head
JPS57198525A (en) Magnetic head
JPS52141617A (en) Magnetic head device
JPS5736426A (en) Magnetic head