JPS587224U - erase head - Google Patents

erase head

Info

Publication number
JPS587224U
JPS587224U JP9905981U JP9905981U JPS587224U JP S587224 U JPS587224 U JP S587224U JP 9905981 U JP9905981 U JP 9905981U JP 9905981 U JP9905981 U JP 9905981U JP S587224 U JPS587224 U JP S587224U
Authority
JP
Japan
Prior art keywords
erase head
graph showing
head
gap
harmonics
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
JP9905981U
Other languages
Japanese (ja)
Other versions
JPH0142814Y2 (en
Inventor
吉明 加藤
Original Assignee
アルプス電気株式会社
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 アルプス電気株式会社 filed Critical アルプス電気株式会社
Priority to JP9905981U priority Critical patent/JPS587224U/en
Publication of JPS587224U publication Critical patent/JPS587224U/en
Application granted granted Critical
Publication of JPH0142814Y2 publication Critical patent/JPH0142814Y2/ja
Granted legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の接合型タイプの消去ヘッドを示す断面図
、第２図は消去へラドコア内部の磁束密度の波形を示す
グラフ、第３図はギヤツブ部磁気抵抗Ｒｍが０．３７よ
り小さい消去ヘッドの高調波量を示すグラフ、第４図は
ギヤツブ部磁気抵抗Ｒｍが０．３７以上の消去ヘッドの
高調波量を示すグラフ、第５図は消去ヘッドのギヤツブ
部磁気抵抗Ｒ０と高調波（９次、１１次）の出力レベル
との関係を示すグラフである。 １・・・シールドケースζ２・・・バックコア、３・・
・樹脂、４−・・フロントコア、５・・・コイル、Ｇ・
・・ギャップ幅、Ｌ・・・ギャップ深さ。Fig. 1 is a sectional view showing a conventional junction type erase head, Fig. 2 is a graph showing the waveform of magnetic flux density inside the eraser rad core, and Fig. 3 is an eraser in which gear part magnetic resistance Rm is less than 0.37. A graph showing the amount of harmonics of the head. Fig. 4 is a graph showing the amount of harmonics of an erasing head with gear part magnetic resistance Rm of 0.37 or more. Fig. 5 shows a graph showing the amount of harmonics ( 9 is a graph showing the relationship with output levels (9th order, 11th order). 1... Shield case ζ 2... Back core, 3...
・Resin, 4-...Front core, 5...Coil, G.
...Gap width, L...Gap depth.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ギャップ幅がＧＰｍ、ギャップ深さがＬμｍから成る消
去ヘッドにおいて、ＧＩＬ≧０．３７としたことを特徴
とする消去ヘッド。An erasing head having a gap width of GPm and a gap depth of Lμm, characterized in that GIL≧0.37.
JP9905981U 1981-07-02 1981-07-02 erase head Granted JPS587224U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9905981U JPS587224U (en) 1981-07-02 1981-07-02 erase head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9905981U JPS587224U (en) 1981-07-02 1981-07-02 erase head

Publications (2)

Publication Number Publication Date
JPS587224U true JPS587224U (en) 1983-01-18
JPH0142814Y2 JPH0142814Y2 (en) 1989-12-13

Family

ID=29893805

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9905981U Granted JPS587224U (en) 1981-07-02 1981-07-02 erase head

Country Status (1)

Country Link
JP (1) JPS587224U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5366720A (en) * 1976-11-27 1978-06-14 Canon Inc Magnetic head

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5366720A (en) * 1976-11-27 1978-06-14 Canon Inc Magnetic head

Also Published As

Publication number Publication date
JPH0142814Y2 (en) 1989-12-13

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