JPS55122217A - Erasing head - Google Patents

Erasing head

Info

Publication number
JPS55122217A
JPS55122217A JP2611079A JP2611079A JPS55122217A JP S55122217 A JPS55122217 A JP S55122217A JP 2611079 A JP2611079 A JP 2611079A JP 2611079 A JP2611079 A JP 2611079A JP S55122217 A JPS55122217 A JP S55122217A
Authority
JP
Japan
Prior art keywords
thin plate
composition
alloy thin
constitution
atom
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
JP2611079A
Other languages
Japanese (ja)
Inventor
Senji Shimanuki
Koichiro Inomata
Teruo Oshima
Nobuyuki Otake
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2611079A priority Critical patent/JPS55122217A/en
Publication of JPS55122217A publication Critical patent/JPS55122217A/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

Landscapes

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

Abstract

PURPOSE:To make it possible to demagnetize a high-coercive force metallic magnetic tape with a small erasing current by constituting the core part by an amorphous alloy thin plate of a prescribed composition. CONSTITUTION:Core part 1 of an erasing head is formed by the amorphous alloy thin plate of the composition expressed by expression (T1-aMa)1-zXz (however, T=one or more kinds of Co and Fe, M=one or more kinds of Cr, Nb, Ta, Mo and W, X=B or the alloy system of B+Si and Si is 25 atom % or less, a and z are 0.02- 0.06 and 0.2-0.27 respectively). It is desirable that T in the composition of the alloy above is substituted by Ni of 10 atom % or less to increase permeability and reduce the erasing current. By this constitution, an alloy thin plate of saturated magnetization 10000G or more and effective permeability 4000 or more for 100kHz can be obtained, so that even a high-coercive force metallic magnetic tape can be erased sufficiently.
JP2611079A 1979-03-08 1979-03-08 Erasing head Pending JPS55122217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2611079A JPS55122217A (en) 1979-03-08 1979-03-08 Erasing head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2611079A JPS55122217A (en) 1979-03-08 1979-03-08 Erasing head

Publications (1)

Publication Number Publication Date
JPS55122217A true JPS55122217A (en) 1980-09-19

Family

ID=12184442

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2611079A Pending JPS55122217A (en) 1979-03-08 1979-03-08 Erasing head

Country Status (1)

Country Link
JP (1) JPS55122217A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS582721U (en) * 1981-06-29 1983-01-08 ティーディーケイ株式会社 erase head
JPS5862433U (en) * 1981-10-21 1983-04-27 ティーディーケイ株式会社 magnetic recording device
GB2557564A (en) * 2016-06-22 2018-06-27 Insurgo Media Services Ltd Magnetic head

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS582721U (en) * 1981-06-29 1983-01-08 ティーディーケイ株式会社 erase head
JPS5862433U (en) * 1981-10-21 1983-04-27 ティーディーケイ株式会社 magnetic recording device
GB2557564A (en) * 2016-06-22 2018-06-27 Insurgo Media Services Ltd Magnetic head
US10475472B2 (en) 2016-06-22 2019-11-12 Insurgo Media Services Ltd Magnetic head
GB2557564B (en) * 2016-06-22 2020-10-28 Insurgo Media Services Ltd Magnetic head

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