JPS5680803A - Photomagnetic recorder/reproducer - Google Patents

Photomagnetic recorder/reproducer

Info

Publication number
JPS5680803A
JPS5680803A JP15777279A JP15777279A JPS5680803A JP S5680803 A JPS5680803 A JP S5680803A JP 15777279 A JP15777279 A JP 15777279A JP 15777279 A JP15777279 A JP 15777279A JP S5680803 A JPS5680803 A JP S5680803A
Authority
JP
Japan
Prior art keywords
tape
recording
head
laser beam
magnetic head
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
JP15777279A
Other languages
Japanese (ja)
Other versions
JPH026139B2 (en
Inventor
Shinya Sano
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15777279A priority Critical patent/JPS5680803A/en
Publication of JPS5680803A publication Critical patent/JPS5680803A/en
Publication of JPH026139B2 publication Critical patent/JPH026139B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4907—Details for scanning

Abstract

PURPOSE:To realize a high-density recording and reproduction, by giving a laser beam scanning along the gap slit of a magnetic head to a magnetic tape along the magnetic head. CONSTITUTION:The scanning of the laser beam 11 given from the laser beam source 3 is carried out along the magnetic head 2 by the rotary mirror 12 while the tape 1 is made to travel. Then the record signal is put into the head 2, and thus the tape 1 is magnetized to ensure a photomagentic recording. When reproducing, the beam 11 is irradiated in the same way to the tape 1 travelling. As a result, the residual magnetization of the minute region where the beam 11 is irradiated is decreased qucikly. And this variation is detected by the head 2 to read out the recorded information. The recording density can be increased up to the limit which is decided by the spot diameter of the beam 11. Thus a high-density recording and reproduction becomes possible.
JP15777279A 1979-12-04 1979-12-04 Photomagnetic recorder/reproducer Granted JPS5680803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15777279A JPS5680803A (en) 1979-12-04 1979-12-04 Photomagnetic recorder/reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15777279A JPS5680803A (en) 1979-12-04 1979-12-04 Photomagnetic recorder/reproducer

Publications (2)

Publication Number Publication Date
JPS5680803A true JPS5680803A (en) 1981-07-02
JPH026139B2 JPH026139B2 (en) 1990-02-07

Family

ID=15656956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15777279A Granted JPS5680803A (en) 1979-12-04 1979-12-04 Photomagnetic recorder/reproducer

Country Status (1)

Country Link
JP (1) JPS5680803A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06210399A (en) * 1993-01-13 1994-08-02 Sumitomo Metal Mining Co Ltd Manufacture of metallic cast product

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5068118A (en) * 1973-10-18 1975-06-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5068118A (en) * 1973-10-18 1975-06-07

Also Published As

Publication number Publication date
JPH026139B2 (en) 1990-02-07

Similar Documents

Publication Publication Date Title
EP0171266A3 (en) Recording digital information signals
GB1448380A (en) Video recording and reproducing
JPH0415521B2 (en)
EP0030301A3 (en) Magnetic-recording method and apparatus; magnetic record medium produced by such method and method of using such record medium
JPS5792446A (en) Recording, reproduction and erasure system for information using photomagnetic recording medium
US5193082A (en) Optical/magnetic composite head having magnetic and optical heads in one integrated unit
EP0650157A4 (en) Magnetic recording medium, its recording/reproducing method and information processor which uses the medium and method.
DE68918791T2 (en) PHOTOMAGNETIC RECORDING PROCEDURE.
JPS5680803A (en) Photomagnetic recorder/reproducer
CA2026632A1 (en) Information data recording/reproducing apparatus
EP0471527A3 (en) Magnetic recording medium and information recording-reproduction method using the same
JPS5589928A (en) Vertical magnetic recorder and its reproduction system
GB1329787A (en) Apparatus for magnetically recording and or reproducing a video signal on a magnetic tape
JPS57186248A (en) Vertically thermomagnetic recording and reproducing system
JPS55153142A (en) Magnetic recording and reproducing device
JPS5654676A (en) Digital magnetic record/reproduction system
SU1679546A1 (en) Method of determining magnetic tape recording track parameters
JPS5483415A (en) Narrow track magnetic head
JPS576477A (en) Recording confirmation system of magnetic tape device
JPS5755550A (en) Magnetic recorder and reproducer
KR880014512A (en) Recorder with track guide
JPS5476217A (en) Narrow track magnetic head
JPS5794949A (en) Magnetic recorder and reproducer
JPS55163627A (en) Information recorder/reproducer
JPS5690454A (en) Tape-like recording medium and reproducing device