JPS55125521A - Erasing head for magnetic tape of high magnetic force - Google Patents

Erasing head for magnetic tape of high magnetic force

Info

Publication number
JPS55125521A
JPS55125521A JP3359079A JP3359079A JPS55125521A JP S55125521 A JPS55125521 A JP S55125521A JP 3359079 A JP3359079 A JP 3359079A JP 3359079 A JP3359079 A JP 3359079A JP S55125521 A JPS55125521 A JP S55125521A
Authority
JP
Japan
Prior art keywords
type core
type
core
erasing head
ferrite
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
JP3359079A
Other languages
Japanese (ja)
Inventor
Norio Ishijima
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP3359079A priority Critical patent/JPS55125521A/en
Publication of JPS55125521A publication Critical patent/JPS55125521A/en
Pending legal-status Critical Current

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  • Magnetic Heads (AREA)

Abstract

PURPOSE: The captioned erasing head which is able to erase a recorded tape satisfactorily and efficiently, which is prepared by setting at the value more than specified, as to an angle made by the side of the i-type core of the c-i-c type core formed by ferrite of high saturated magnetic flux density, and the inner side of the tip part of the core type c, and also winding a coil to the i-type core.
CONSTITUTION: An erasing head for a magnetic tape of high mangetic force is prepared by forming a c-i-c type core of ferrite, carrying out butt seaming of c-type cores 2A and 2B to both the sides of the i-type core 1, and by winding a coil 3 to the i-type core 1. In this case, ferrite which is used as a core shall be of saturated magnetic flux density exceeding approximately 4,500cgs., working frequency of tens of kHz to hundreds of kHz, and specific magnetic permeability exceeding approx. 2,000, also the sectional area of the i-type core 1 which is wound by a coil 3 shall be set to approximately 4mm2 or more, and the angle θ which is made by the side of the i-type core 1 and the inner side of the tip part of the c-type cores 2A and 2B shall be set to approximately 60W90°.
COPYRIGHT: (C)1980,JPO&Japio
JP3359079A 1979-03-22 1979-03-22 Erasing head for magnetic tape of high magnetic force Pending JPS55125521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3359079A JPS55125521A (en) 1979-03-22 1979-03-22 Erasing head for magnetic tape of high magnetic force

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3359079A JPS55125521A (en) 1979-03-22 1979-03-22 Erasing head for magnetic tape of high magnetic force

Publications (1)

Publication Number Publication Date
JPS55125521A true JPS55125521A (en) 1980-09-27

Family

ID=12390710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3359079A Pending JPS55125521A (en) 1979-03-22 1979-03-22 Erasing head for magnetic tape of high magnetic force

Country Status (1)

Country Link
JP (1) JPS55125521A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805058A (en) * 1983-10-24 1989-02-14 Sony Corporation Magnetic erasing head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805058A (en) * 1983-10-24 1989-02-14 Sony Corporation Magnetic erasing head

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