JPS56111140A - Scanning type magnetic recording reading head - Google Patents

Scanning type magnetic recording reading head

Info

Publication number
JPS56111140A
JPS56111140A JP1133780A JP1133780A JPS56111140A JP S56111140 A JPS56111140 A JP S56111140A JP 1133780 A JP1133780 A JP 1133780A JP 1133780 A JP1133780 A JP 1133780A JP S56111140 A JPS56111140 A JP S56111140A
Authority
JP
Japan
Prior art keywords
thin film
emission end
film
waveguide path
magnetic recording
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
JP1133780A
Other languages
Japanese (ja)
Inventor
Kazuya Matsumoto
Isoo Yamaguchi
Takao Tsuji
Hideaki Sato
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP1133780A priority Critical patent/JPS56111140A/en
Priority to US06/228,744 priority patent/US4425023A/en
Priority to DE3102972A priority patent/DE3102972C2/en
Priority to GB8102790A priority patent/GB2070314B/en
Publication of JPS56111140A publication Critical patent/JPS56111140A/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
    • 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
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G11B11/10547—Heads for reproducing using optical beam of radiation interacting with the magnetisation of an intermediate transfer element, e.g. magnetic film, included in the head
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • G11B7/124—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate the integrated head arrangements including waveguides
    • G11B7/1245—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate the integrated head arrangements including waveguides the waveguides including means for electro-optical or acousto-optical deflection

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

PURPOSE: To enable optical high speed scanning and to make compact the head, by the constitution that magnetic transferring film is provided on the emission end of waveguide path incorporatedly and the photodeflector and the condenser lenses are provided on the same base.
CONSTITUTION: The light from a laser 3 in parallel light flux 5 with a thin film lens 4 is diffracted and deflected with an ultrasonic surface acoustic waves 7 excited with comb-shaped electrodes 6 provided at a part of waveguide path 2, and this deflected light flux 8 is collected with a thin film lens 9 to form a spot 14 at the emission end of a thin film waveguide path 2 or its vicinity. The emission end of the path 2 is set to a circular arc almost in coincidence with the locus of the light condensing point and the magnetic transferring film 10 and the protective film 12 are formed on the end, allowing the formed spot to be scanned on the magnetic transferring film 10 or its vicinity.
COPYRIGHT: (C)1981,JPO&Japio
JP1133780A 1980-01-31 1980-02-01 Scanning type magnetic recording reading head Pending JPS56111140A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1133780A JPS56111140A (en) 1980-02-01 1980-02-01 Scanning type magnetic recording reading head
US06/228,744 US4425023A (en) 1980-01-31 1981-01-27 Beam spot scanning device
DE3102972A DE3102972C2 (en) 1980-01-31 1981-01-29 Device for continuous scanning by means of a light spot
GB8102790A GB2070314B (en) 1980-02-01 1981-01-30 Device for reproducing the information on a recorded medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1133780A JPS56111140A (en) 1980-02-01 1980-02-01 Scanning type magnetic recording reading head

Publications (1)

Publication Number Publication Date
JPS56111140A true JPS56111140A (en) 1981-09-02

Family

ID=11775211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1133780A Pending JPS56111140A (en) 1980-01-31 1980-02-01 Scanning type magnetic recording reading head

Country Status (2)

Country Link
JP (1) JPS56111140A (en)
GB (1) GB2070314B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594699A (en) * 1983-06-20 1986-06-10 Datatape Incorporated Faraday-effect magneto-optic transducer apparatus of a rotary form
JPS60501629A (en) * 1983-06-20 1985-09-26 デ−タテ−プ・インコ−ポレ−テツド Magnetic reader of recorded information
US4733065A (en) * 1984-06-27 1988-03-22 Canon Kabushiki Kaisha Optical head device with diffraction grating for separating a light beam incident on an optical recording medium from a light beam reflected therefrom
DE3586076D1 (en) * 1984-09-03 1992-06-25 Omron Tateisi Electronics Co DEVICE FOR PROCESSING OPTICAL DATA.
US4737946A (en) * 1984-09-03 1988-04-12 Omron Tateisi Electronics Co. Device for processing optical data with improved optical allignment means
US4707814A (en) * 1985-03-14 1987-11-17 Laser Dynamics, Inc. Extended cavity laser recording method and apparatus

Also Published As

Publication number Publication date
GB2070314A (en) 1981-09-03
GB2070314B (en) 1983-11-23

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