KR910009025B1 - 복합형 자기 헤드용 코어의 제조법 - Google Patents

복합형 자기 헤드용 코어의 제조법 Download PDF

Info

Publication number
KR910009025B1
KR910009025B1 KR1019850000091A KR850000091A KR910009025B1 KR 910009025 B1 KR910009025 B1 KR 910009025B1 KR 1019850000091 A KR1019850000091 A KR 1019850000091A KR 850000091 A KR850000091 A KR 850000091A KR 910009025 B1 KR910009025 B1 KR 910009025B1
Authority
KR
South Korea
Prior art keywords
ferrite
core
magnetic
glass
structures
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.)
Expired
Application number
KR1019850000091A
Other languages
English (en)
Korean (ko)
Other versions
KR850005671A (ko
Inventor
소이찌로 마쓰자와
Original Assignee
닛뽄 가이시 가부시끼가이샤
다께미 쥰이찌
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 닛뽄 가이시 가부시끼가이샤, 다께미 쥰이찌 filed Critical 닛뽄 가이시 가부시끼가이샤
Publication of KR850005671A publication Critical patent/KR850005671A/ko
Application granted granted Critical
Publication of KR910009025B1 publication Critical patent/KR910009025B1/ko
Expired legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/187Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/23Gap features
    • G11B5/232Manufacture of gap
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/133Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/187Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/193Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being ferrite or other magnetic particles

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
KR1019850000091A 1984-01-14 1985-01-09 복합형 자기 헤드용 코어의 제조법 Expired KR910009025B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP59-5204 1984-01-14
JP59005204A JPS60150215A (ja) 1984-01-14 1984-01-14 複合型磁気ヘツド用コアの製造法
JP5204 1984-01-14

Publications (2)

Publication Number Publication Date
KR850005671A KR850005671A (ko) 1985-08-28
KR910009025B1 true KR910009025B1 (ko) 1991-10-28

Family

ID=11604662

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019850000091A Expired KR910009025B1 (ko) 1984-01-14 1985-01-09 복합형 자기 헤드용 코어의 제조법

Country Status (2)

Country Link
JP (1) JPS60150215A (https=)
KR (1) KR910009025B1 (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3583619D1 (de) * 1984-01-14 1991-09-05 Ngk Insulators Ltd Magnetkopfkern und herstellungsverfahren.
JPS62241116A (ja) * 1986-04-14 1987-10-21 Mitsubishi Electric Corp 磁気ヘツドの製造方法
JPS637504A (ja) * 1986-06-27 1988-01-13 Nec Kansai Ltd 磁気ヘツドコアの接合方法
JPS63200308A (ja) * 1987-02-13 1988-08-18 Nippon Chemicon Corp 磁気ヘツド用コアおよびそのコアピ−ス並びにこれらの加工方法
JPH0638003U (ja) * 1992-10-01 1994-05-20 ティアック株式会社 磁気ヘッド
JPH06231419A (ja) * 1993-01-29 1994-08-19 Victor Co Of Japan Ltd 磁気ヘッド

Also Published As

Publication number Publication date
JPH0247002B2 (https=) 1990-10-18
KR850005671A (ko) 1985-08-28
JPS60150215A (ja) 1985-08-07

Similar Documents

Publication Publication Date Title
US4839763A (en) Composite magnetic head core
KR910009025B1 (ko) 복합형 자기 헤드용 코어의 제조법
US5161300A (en) Method for manufacture of magnetic head
KR910009024B1 (ko) 자기헤드용 코어
JP2693431B2 (ja) コンビネーシヨン磁気ヘツドおよびその製造方法
US4831481A (en) Composite magnetic head and method of manufacturing the same
JP2507686B2 (ja) 複合型磁気ヘッド用コアおよびその製造方法
JP2645868B2 (ja) 浮動磁気ヘッドの製造方法
JPH0311002B2 (https=)
JP2627322B2 (ja) 浮動型磁気ヘッドの製造方法
KR0142115B1 (ko) 자기헤드의 제조방법
KR900000627B1 (ko) 복합형 자기헤드 및 그 제조방법
JPH0664698B2 (ja) 磁気ヘツド用コア及びその製造方法
JP2563246B2 (ja) 磁気ヘツドの製造方法
JPS61216106A (ja) 複合型磁気ヘツドおよびその製造方法
JPS6222214A (ja) 複合型磁気ヘツドの製造方法
JPS62287406A (ja) 複合磁気ヘツドおよびその製造方法
JPH0580727B2 (https=)
JPS62157312A (ja) 磁気ヘツド用コアの製造方法
JPS6222213A (ja) 複合型磁気ヘツドおよびその製造方法
JPS6222212A (ja) 複合型磁気ヘツドおよびその製造方法
JPS63304412A (ja) 複合型磁気ヘッドの製造方法
JPH0366009A (ja) 磁気ヘッドの製造方法
JPS6258408A (ja) 複合型磁気ヘツド
JPS62252506A (ja) 磁気ヘッドコア及びその製造方法

Legal Events

Date Code Title Description
PA0109 Patent application

St.27 status event code: A-0-1-A10-A12-nap-PA0109

R17-X000 Change to representative recorded

St.27 status event code: A-3-3-R10-R17-oth-X000

P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

A201 Request for examination
PA0201 Request for examination

St.27 status event code: A-1-2-D10-D11-exm-PA0201

G160 Decision to publish patent application
PG1605 Publication of application before grant of patent

St.27 status event code: A-2-2-Q10-Q13-nap-PG1605

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

St.27 status event code: A-1-2-D10-D22-exm-PE0701

GRNT Written decision to grant
PR0701 Registration of establishment

St.27 status event code: A-2-4-F10-F11-exm-PR0701

PR1002 Payment of registration fee

St.27 status event code: A-2-2-U10-U11-oth-PR1002

Fee payment year number: 1

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 4

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 7

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 8

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R13-asn-PN2301

St.27 status event code: A-5-5-R10-R11-asn-PN2301

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 9

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 10

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 11

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 12

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 13

FPAY Annual fee payment

Payment date: 20040913

Year of fee payment: 14

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 14

EXPY Expiration of term
PC1801 Expiration of term

St.27 status event code: N-4-6-H10-H14-oth-PC1801

Not in force date: 20050110

Ip right cessation event data comment text: Termination Category : EXPIRATION_OF_DURATION

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000

P22-X000 Classification modified

St.27 status event code: A-4-4-P10-P22-nap-X000

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R13-asn-PN2301

St.27 status event code: A-5-5-R10-R11-asn-PN2301