JPS56156921A - Production of combination head - Google Patents

Production of combination head

Info

Publication number
JPS56156921A
JPS56156921A JP5789880A JP5789880A JPS56156921A JP S56156921 A JPS56156921 A JP S56156921A JP 5789880 A JP5789880 A JP 5789880A JP 5789880 A JP5789880 A JP 5789880A JP S56156921 A JPS56156921 A JP S56156921A
Authority
JP
Japan
Prior art keywords
head
record
magnetic core
reproduction
core material
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
JP5789880A
Other languages
Japanese (ja)
Inventor
Shinichi Nagahara
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP5789880A priority Critical patent/JPS56156921A/en
Publication of JPS56156921A publication Critical patent/JPS56156921A/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
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
    • G11B5/2651—Manufacture

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

PURPOSE:To simplify the structure and increase the record/reproduction property of a combination head, by giving a level difference to the inner side of one side of a magnetic core material to obtain a combination head of a record head having a wide gap and a reproduction head having a narrow gap and then fixing the head. CONSTITUTION:The plural sections of a level difference 1a having a convex part 1a1 and a concave part 1a2 are formed on the surface of a magnetic core component material 1 by means of a special cutter having plural trapezoid blades. Then the removing part 1b is cut and then the part 1a1 is polished. After this, the parts 1a1 and 1a2 are cut with every difference 1a. A magnetic core material 1' having a dividing groove 1'a at the center and the part 1b at the right and left sides each with the opposite surfaces to the parts 1a1 and 1a2 of the core material 1 formed flat evenly is made opposite to the material 1. Then dividing cuts 1c1-1c3 plus 1'c1- 1'c3 are formed, and the tape sliding surface is bent and polished. Thus the narrow gaps 2a and 2'a to be used for the reproduction heads 2 and 2' are obtained along with the gaps 3a and 3'a to be used for the record heads 3 and 3'. As a result, a combination head having 4 channels and 4 tracks can be obtained.
JP5789880A 1980-05-02 1980-05-02 Production of combination head Pending JPS56156921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5789880A JPS56156921A (en) 1980-05-02 1980-05-02 Production of combination head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5789880A JPS56156921A (en) 1980-05-02 1980-05-02 Production of combination head

Publications (1)

Publication Number Publication Date
JPS56156921A true JPS56156921A (en) 1981-12-03

Family

ID=13068800

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5789880A Pending JPS56156921A (en) 1980-05-02 1980-05-02 Production of combination head

Country Status (1)

Country Link
JP (1) JPS56156921A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5309306A (en) * 1991-06-10 1994-05-03 Mitsubishi Denki Kabushiki Kaisha Complex magnetic head

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5441122A (en) * 1977-09-07 1979-04-02 Hitachi Ltd Magnetic head core block

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5441122A (en) * 1977-09-07 1979-04-02 Hitachi Ltd Magnetic head core block

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5309306A (en) * 1991-06-10 1994-05-03 Mitsubishi Denki Kabushiki Kaisha Complex magnetic head

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