KR900000627B1 - 복합형 자기헤드 및 그 제조방법 - Google Patents

복합형 자기헤드 및 그 제조방법 Download PDF

Info

Publication number
KR900000627B1
KR900000627B1 KR1019850007893A KR850007893A KR900000627B1 KR 900000627 B1 KR900000627 B1 KR 900000627B1 KR 1019850007893 A KR1019850007893 A KR 1019850007893A KR 850007893 A KR850007893 A KR 850007893A KR 900000627 B1 KR900000627 B1 KR 900000627B1
Authority
KR
South Korea
Prior art keywords
recording
magnetic
block
erasing
reproducing
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
KR1019850007893A
Other languages
English (en)
Korean (ko)
Other versions
KR860007631A (ko
Inventor
아쓰시 이바라끼
데쓰야 이와다
Original Assignee
알프스 덴기 가부시기가이샤
가다오까 가쓰다로오
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
Priority claimed from JP60057746A external-priority patent/JPS61216106A/ja
Priority claimed from JP60060332A external-priority patent/JPS61217919A/ja
Priority claimed from JP60061172A external-priority patent/JPS61220110A/ja
Priority claimed from JP60077928A external-priority patent/JPS61237213A/ja
Application filed by 알프스 덴기 가부시기가이샤, 가다오까 가쓰다로오 filed Critical 알프스 덴기 가부시기가이샤
Publication of KR860007631A publication Critical patent/KR860007631A/ko
Application granted granted Critical
Publication of KR900000627B1 publication Critical patent/KR900000627B1/ko
Expired legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
KR1019850007893A 1985-03-22 1985-10-25 복합형 자기헤드 및 그 제조방법 Expired KR900000627B1 (ko)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP60057746A JPS61216106A (ja) 1985-03-22 1985-03-22 複合型磁気ヘツドおよびその製造方法
JP57746 1985-03-22
JP60332 1985-03-25
JP60060332A JPS61217919A (ja) 1985-03-25 1985-03-25 複合型磁気ヘツドのバツクバ−接合構造
JP61172 1985-03-26
JP60061172A JPS61220110A (ja) 1985-03-26 1985-03-26 複合型磁気ヘツドの接合構造
JP60077928A JPS61237213A (ja) 1985-04-12 1985-04-12 複合型磁気ヘツド
JP77928 1985-04-12

Publications (2)

Publication Number Publication Date
KR860007631A KR860007631A (ko) 1986-10-15
KR900000627B1 true KR900000627B1 (ko) 1990-02-01

Family

ID=27463552

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019850007893A Expired KR900000627B1 (ko) 1985-03-22 1985-10-25 복합형 자기헤드 및 그 제조방법

Country Status (3)

Country Link
KR (1) KR900000627B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3609694A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2173937B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1325239A (en) * 1970-08-28 1973-08-01 Ampex Magnetic head and method of manufacture thereof
GB1376652A (en) * 1972-01-04 1974-12-11 Int Computers Ltd Magnetic transducers and to methods of manufacture thereof
US4110804A (en) * 1977-07-21 1978-08-29 International Business Machines Corporation Read/write and tunnel erase magnetic head assembly
US4611259A (en) * 1983-02-08 1986-09-09 Ampex Corporation Magnetic transducer structure having reduced track width and a method of manufacturing thereof
EP0149509B1 (en) * 1984-01-14 1991-07-31 Ngk Insulators, Ltd. Magnectic head core and process of manufacturing the same
GB2154359A (en) * 1984-02-17 1985-09-04 Hitachi Metals Ltd Magnetic head

Also Published As

Publication number Publication date
DE3609694A1 (de) 1986-09-25
KR860007631A (ko) 1986-10-15
GB8606924D0 (en) 1986-04-23
GB2173937A (en) 1986-10-22
GB2173937B (en) 1989-06-28
DE3609694C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-08-01

Similar Documents

Publication Publication Date Title
KR910007872B1 (ko) 복합형 자기헤드 및 그 제조방법
EP0443460B1 (en) Method for manufacture of magnetic head
US4811146A (en) Composite magnetic head
KR900000627B1 (ko) 복합형 자기헤드 및 그 제조방법
JPS6331851B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP2603945B2 (ja) 複合型磁気ヘッドの製造方法
US4831481A (en) Composite magnetic head and method of manufacturing the same
JPS61216106A (ja) 複合型磁気ヘツドおよびその製造方法
US5864451A (en) Magnetic tape head having longitudinal track width restriction grooves
KR930006583B1 (ko) 자기헤드의 제조방법
JPS61237213A (ja) 複合型磁気ヘツド
JPS6222214A (ja) 複合型磁気ヘツドの製造方法
JPS6251014A (ja) 磁気ヘツドおよびその製造方法
JPS6258407A (ja) 複合型磁気ヘツドおよびその製造方法
JPH0338645B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JPS6258409A (ja) 複合型磁気ヘツドおよびその製造方法
JPH0338644B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR100211110B1 (ko) 자기헤드 제조방법
JPS6111911A (ja) 磁気ヘツド装置
JP2507686B2 (ja) 複合型磁気ヘッド用コアおよびその製造方法
JPS6258408A (ja) 複合型磁気ヘツド
JPS6222212A (ja) 複合型磁気ヘツドおよびその製造方法
JP2563246B2 (ja) 磁気ヘツドの製造方法
KR0142115B1 (ko) 자기헤드의 제조방법
JPS628318A (ja) 複合型磁気ヘツド

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

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

PA0201 Request for examination

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

R17-X000 Change to representative recorded

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

PG1501 Laying open of application

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

E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

St.27 status event code: A-1-2-D10-D21-exm-PE0902

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

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: 5

FPAY Annual fee payment

Payment date: 19941228

Year of fee payment: 6

PR1001 Payment of annual fee

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

Fee payment year number: 6

LAPS Lapse due to unpaid annual fee
PC1903 Unpaid annual fee

St.27 status event code: A-4-4-U10-U13-oth-PC1903

Not in force date: 19960202

Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

PC1903 Unpaid annual fee

St.27 status event code: N-4-6-H10-H13-oth-PC1903

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

Not in force date: 19960202

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

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