JPS5443009A - Magnetic erasing circuit - Google Patents

Magnetic erasing circuit

Info

Publication number
JPS5443009A
JPS5443009A JP10962377A JP10962377A JPS5443009A JP S5443009 A JPS5443009 A JP S5443009A JP 10962377 A JP10962377 A JP 10962377A JP 10962377 A JP10962377 A JP 10962377A JP S5443009 A JPS5443009 A JP S5443009A
Authority
JP
Japan
Prior art keywords
magnetic erasing
erasing circuit
magnetic
waveform
outputting
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
JP10962377A
Other languages
Japanese (ja)
Inventor
Fumio Asano
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP10962377A priority Critical patent/JPS5443009A/en
Publication of JPS5443009A publication Critical patent/JPS5443009A/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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/024—Erasing

Landscapes

  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE:To make possible a.c. magnetic erasing by using the d.c. power source alone by outputting d.c. attenuation waveform and its inversion waveform alternately through an analog switch and using these for magnetic erasing.
JP10962377A 1977-09-12 1977-09-12 Magnetic erasing circuit Pending JPS5443009A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10962377A JPS5443009A (en) 1977-09-12 1977-09-12 Magnetic erasing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10962377A JPS5443009A (en) 1977-09-12 1977-09-12 Magnetic erasing circuit

Publications (1)

Publication Number Publication Date
JPS5443009A true JPS5443009A (en) 1979-04-05

Family

ID=14514973

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10962377A Pending JPS5443009A (en) 1977-09-12 1977-09-12 Magnetic erasing circuit

Country Status (1)

Country Link
JP (1) JPS5443009A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581661A (en) * 1982-12-15 1986-04-08 Canon Kabushiki Kaisha Erasing apparatus employing multiple magnetically premeable members

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581661A (en) * 1982-12-15 1986-04-08 Canon Kabushiki Kaisha Erasing apparatus employing multiple magnetically premeable members

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