JPS55113120A - Erasing magnetic head - Google Patents

Erasing magnetic head

Info

Publication number
JPS55113120A
JPS55113120A JP1920779A JP1920779A JPS55113120A JP S55113120 A JPS55113120 A JP S55113120A JP 1920779 A JP1920779 A JP 1920779A JP 1920779 A JP1920779 A JP 1920779A JP S55113120 A JPS55113120 A JP S55113120A
Authority
JP
Japan
Prior art keywords
front surface
contact
pad
gap
magnetic head
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
JP1920779A
Other languages
Japanese (ja)
Inventor
Seiichi Miyamoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1920779A priority Critical patent/JPS55113120A/en
Publication of JPS55113120A publication Critical patent/JPS55113120A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To secure erasure neither by using any pad nor by increasing tension of a magnetic tape, by slanting the front surface of an erasing magnetic head formed in an arc shape from a gap circumference toward its outside by a certain angle to the center tangent of the front surface.
CONSTITUTION: A region where magnetic tape 4 running as shown by arrow A comes in contact with contact surface 1a of magnetic head 1 is expressed by L. Its front surface is formed being slanted from a point constant interval (e) away from gap 2 toward is outside by angle θ to center tangent (m) of front surface 1a of head 1. The figure shows the relation among distance (l) between gaps 2 and 3, contact surface L of contact surface 1a and contact pressure P1, and great contact pressure can be obtained. Contact pressure to the front surface on the gap-3 side is similarly increased. Thus, a device with restriction on the arrangement of a pad, etc., in terms of the erasing head of a cassette tape recorder, etc., brings stable erasure to effect without using any pad.
COPYRIGHT: (C)1980,JPO&Japio
JP1920779A 1979-02-20 1979-02-20 Erasing magnetic head Pending JPS55113120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1920779A JPS55113120A (en) 1979-02-20 1979-02-20 Erasing magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1920779A JPS55113120A (en) 1979-02-20 1979-02-20 Erasing magnetic head

Publications (1)

Publication Number Publication Date
JPS55113120A true JPS55113120A (en) 1980-09-01

Family

ID=11992914

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1920779A Pending JPS55113120A (en) 1979-02-20 1979-02-20 Erasing magnetic head

Country Status (1)

Country Link
JP (1) JPS55113120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58153220A (en) * 1982-03-08 1983-09-12 Hitachi Ltd Magnetic head and its manufacture

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52100218A (en) * 1976-02-19 1977-08-23 Alps Electric Co Ltd Method of producing magnetic head
JPS5377514A (en) * 1976-12-20 1978-07-10 Sanyo Electric Co Ltd Manfacture of magnetic head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52100218A (en) * 1976-02-19 1977-08-23 Alps Electric Co Ltd Method of producing magnetic head
JPS5377514A (en) * 1976-12-20 1978-07-10 Sanyo Electric Co Ltd Manfacture of magnetic head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58153220A (en) * 1982-03-08 1983-09-12 Hitachi Ltd Magnetic head and its manufacture

Similar Documents

Publication Publication Date Title
JPS5423517A (en) Floating head slider
JPS57189325A (en) Composite magnetic head
JPS57113466A (en) Magnetic sheet jacket
JPS54136810A (en) Recorder-reproducer
JPS55113120A (en) Erasing magnetic head
JPS5258903A (en) Magnetic record/reproduction unit
JPS55150126A (en) Rotary magnetic head
JPS55129960A (en) Rotary drum unit of magnetic recording and reproducing device
JPS5317317A (en) Floating type magnetic head
JPS5317708A (en) Tape guide
JPS522420A (en) Floating type thin film magnetic head
GB1209130A (en) A guide drum for a video tape recorder
JPS55150101A (en) Signal reproducing device
JPS5353302A (en) Endless tape running device
JPS5238230A (en) Magnetic brush development device
JPS573218A (en) Erasing head device
JPS55132559A (en) Magnetic recording and reproduction unit
JPS5530956A (en) Recording head and recorder using the same
JPS5545105A (en) Positioning unit for floppy disk
JPS5380203A (en) Tape guide
JPS57205864A (en) Acoustic album recorder
JPS5367411A (en) Rotary head type magnetic tape device
JPS57210461A (en) Scanning stylus and its manufacture
JPS5373124A (en) Card reader
JPS5541231A (en) Recording system