JPS56163535A - Magnetic pickup and information signal carrier reproducer using said pickup - Google Patents

Magnetic pickup and information signal carrier reproducer using said pickup

Info

Publication number
JPS56163535A
JPS56163535A JP6684280A JP6684280A JPS56163535A JP S56163535 A JPS56163535 A JP S56163535A JP 6684280 A JP6684280 A JP 6684280A JP 6684280 A JP6684280 A JP 6684280A JP S56163535 A JPS56163535 A JP S56163535A
Authority
JP
Japan
Prior art keywords
magnetic
signal detecting
pickup
cantilever
magnetic substance
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
JP6684280A
Other languages
Japanese (ja)
Inventor
Senhiko Yamada
Toshiji Fujita
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.)
Toppan Inc
Original Assignee
Toppan Printing 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 Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP6684280A priority Critical patent/JPS56163535A/en
Publication of JPS56163535A publication Critical patent/JPS56163535A/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

Landscapes

  • Magnetic Record Carriers (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To obtain a small-size and light-weight pickup containing no permanent magnet or the like, by fixing a signal detecting part made of a magnetic substance and having a bottom surface functioning as an opposite surface to a recording carrier at the tip of a cantilever made of a magnetic substance and then winding a signal detecting coil around the signal detecting part. CONSTITUTION:A signal detecting part 55 made of a magnetic substance is fixed at the tip of a cantilever 53 made of a magnetic substance. For the bottom surface of the part 55, a magnetic part 4 and a nonmagnetic part 5 are provided alternately to use the bottom surface for an opposite surface to a recording carrier 57 on which the information signal is recorded. In addition, a signal detecting coil 55 is wound around a part of the part 55 to induce a current in accordance with the change of the magnetic flux. At the same time, the size of the above-mentioned opposite surface is set equal to or smaller than the length of the part 5 of the carrier 57. For instance, a holder 126 of the part 55 which is made of diamond or the like is fixed to a cantilever 121, and Cr or the like is vapor-deposited or adhered to the side surface of the holder 126 to form a signal detecting part 122. Then a magnetic field generating part 51 is provided within a magnetic circuit including a turntable 54 to detect the difference of magnetic resistance in the form of a variation of current.
JP6684280A 1980-05-20 1980-05-20 Magnetic pickup and information signal carrier reproducer using said pickup Pending JPS56163535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6684280A JPS56163535A (en) 1980-05-20 1980-05-20 Magnetic pickup and information signal carrier reproducer using said pickup

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6684280A JPS56163535A (en) 1980-05-20 1980-05-20 Magnetic pickup and information signal carrier reproducer using said pickup

Publications (1)

Publication Number Publication Date
JPS56163535A true JPS56163535A (en) 1981-12-16

Family

ID=13327500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6684280A Pending JPS56163535A (en) 1980-05-20 1980-05-20 Magnetic pickup and information signal carrier reproducer using said pickup

Country Status (1)

Country Link
JP (1) JPS56163535A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181467A (en) * 1990-01-26 1993-01-26 Fuji Photo Film Co., Ltd. Automatic dampening water replenisher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181467A (en) * 1990-01-26 1993-01-26 Fuji Photo Film Co., Ltd. Automatic dampening water replenisher

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