DE3679657D1 - Magnetkopf. - Google Patents

Magnetkopf.

Info

Publication number: DE3679657D1
Authority: DE; Germany
Prior art keywords: magnetic head; magnetic; head
Prior art date: 1986-01-10
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 - Lifetime

Application number

DE8686118175T

Other languages

English (en)

Inventor

Noriyuki Kumasaka

Shigekazu Otomo

Takeo Yamashita

Hideo Zama

Juichi Morikawa

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.)

Hitachi Ltd

Original Assignee

Hitachi 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.)

1986-01-10

Filing date

1986-12-31

Publication date

1991-07-11

1986-12-31 Application filed by Hitachi Ltd filed Critical Hitachi Ltd

1991-07-11 Application granted granted Critical

1991-07-11 Publication of DE3679657D1 publication Critical patent/DE3679657D1/de

2007-01-01 Anticipated expiration legal-status Critical

Status Expired - Lifetime 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
- G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets
- 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
- G11B5/21—Structure 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 of ferrous sheet metal or other magnetic layers
- 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
- G11B5/187—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)

DE8686118175T 1986-01-10 1986-12-31 Magnetkopf. Expired - Lifetime DE3679657D1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP61002008A JPH0758527B2 (ja)	1986-01-10	1986-01-10	磁気ヘツド

Publications (1)

Publication Number	Publication Date
DE3679657D1 true DE3679657D1 (de)	1991-07-11

Family

ID=11517357

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8686118175T Expired - Lifetime DE3679657D1 (de)	1986-01-10	1986-12-31	Magnetkopf.

Country Status (5)

Country	Link
US (1)	US4803338A (de)
EP (1)	EP0235395B1 (de)
JP (1)	JPH0758527B2 (de)
KR (1)	KR900004310B1 (de)
DE (1)	DE3679657D1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS62114108A (ja) *	1985-11-14	1987-05-25	Mitsubishi Electric Corp	電磁変換素子
JPH01128213A (ja) *	1987-11-13	1989-05-19	Hitachi Ltd	金属薄膜磁気ヘッド
JPH01260615A (ja) *	1988-04-12	1989-10-17	Nec Kansai Ltd	磁気ヘッド
DE3820502A1 (de) *	1988-06-16	1989-12-21	Bosch Gmbh Robert	Verfahren zur herstellung von magnetkoepfen
JPH0258714A (ja) *	1988-08-23	1990-02-27	Nippon Mining Co Ltd	磁気ヘッド
JPH0762890B2 (ja) *	1988-10-04	1995-07-05	富士写真フイルム株式会社	薄膜磁気ヘッド
DE3934284C2 (de) *	1988-10-13	1994-06-16	Canon Denshi Kk	Magnetkopf
JPH04245005A (ja) *	1991-01-30	1992-09-01	Matsushita Electric Ind Co Ltd	磁気ヘッド及びその製造方法
US5687045A (en) *	1991-09-20	1997-11-11	Hitachi, Ltd.	Thin film magnetic head and production method thereof and magnetic disk drive equipped with this thin film magnetic head
KR0130192B1 (ko) *	1992-01-16	1998-04-17	가다오까 마사다까	자기헤드 및 그 제조방법
JPH0644516A (ja) *	1992-07-24	1994-02-18	Matsushita Electric Ind Co Ltd	磁気ヘッド
JP2762885B2 (ja) *	1993-01-11	1998-06-04	株式会社日立製作所	磁気ヘッド
DE69614759T2 (de) *	1995-05-18	2002-06-27	Matsushita Electric Ind Co Ltd	Magnetkopf, Herstellungsverfahren dafür, und diesen verwendendes Magnetaufzeichnungs-/-wiedergabegerät
KR100245035B1 (ko) *	1997-05-30	2000-02-15	전주범	미그형 자기 유도 헤드 제조방법
US6877213B2 (en) *	2002-01-07	2005-04-12	International Business Machines Corporation	Feature size reduction in thin film magnetic head using low temperature deposition coating of photolithographically-defined trenches
US6770209B2 (en)	2002-01-09	2004-08-03	International Business Machines Corporation	Isotropic deposition for trench narrowing of features to be created by reactive ion etch processing

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3354540A (en) *	1961-04-07	1967-11-28	Philips Corp	Method of manufacturing reliable magnetic heads having accurately predetermined dimensions
JPS55117723A (en) *	1979-02-28	1980-09-10	Sony Corp	Magnetic head
JPS5625220A (en) *	1979-08-07	1981-03-11	Fujitsu Ltd	Manufacture of thih-film magnetic head
JPS56124112A (en) *	1980-03-06	1981-09-29	Matsushita Electric Ind Co Ltd	Magnetic head
NL8202059A (nl) *	1982-05-19	1983-12-16	Philips Nv	Glas gekitte magneetkop en werkwijze voor zijn vervaardiging.
JPS59142716A (ja) *	1983-02-04	1984-08-16	Hitachi Ltd	磁気ヘツドおよびその製造方法
JPS60125909A (ja) *	1983-12-12	1985-07-05	Victor Co Of Japan Ltd	磁気ヘツド
JPS60182507A (ja) *	1984-02-29	1985-09-18	Sony Corp	磁気ヘツド
JPS60195709A (ja) *	1984-03-16	1985-10-04	Sony Corp	磁気ヘツド
US4819113A (en) *	1984-03-29	1989-04-04	Sony Corporation	Magnetic transducer head with inclined magnetic gap
JPS60205808A (ja) *	1984-03-29	1985-10-17	Sony Corp	磁気ヘツド
JPS60261006A (ja) *	1984-06-07	1985-12-24	Matsushita Electric Ind Co Ltd	磁気ヘツドの製造方法
JPS61126614A (ja) *	1984-11-21	1986-06-14	Victor Co Of Japan Ltd	磁気ヘツド及びその製造方法
JPS61145712A (ja) *	1984-12-19	1986-07-03	Hitachi Maxell Ltd	磁気ヘツド
JPS61260407A (ja) *	1985-05-14	1986-11-18	Nec Kansai Ltd	磁気ヘツドの製造方法

1986
- 1986-01-10 JP JP61002008A patent/JPH0758527B2/ja not_active Expired - Lifetime
- 1986-12-24 KR KR1019860011172A patent/KR900004310B1/ko not_active IP Right Cessation
- 1986-12-31 EP EP86118175A patent/EP0235395B1/de not_active Expired - Lifetime
- 1986-12-31 DE DE8686118175T patent/DE3679657D1/de not_active Expired - Lifetime
1987
- 1987-01-06 US US07/000,777 patent/US4803338A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
KR870007478A (ko)	1987-08-19
EP0235395B1 (de)	1991-06-05
JPS62162206A (ja)	1987-07-18
JPH0758527B2 (ja)	1995-06-21
EP0235395A1 (de)	1987-09-09
KR900004310B1 (ko)	1990-06-20
US4803338A (en)	1989-02-07

Legal Events

Date	Code	Title	Description
1992-07-02	8364	No opposition during term of opposition
2000-02-10	8339	Ceased/non-payment of the annual fee

Publication	Publication Date	Title
DE3485393D1 (de)	1992-02-13	Magnetkopf.
NL192424B (nl)	1997-04-01	Magnetisch bevestigingsorgaan.
DE3879305D1 (de)	1993-04-22	Magnetkopf.
DE3770546D1 (de)	1991-07-11	Kopfkissen.
DE3586827D1 (de)	1992-12-17	Senkrechter magnetkopf.
DE3672530D1 (de)	1990-08-16	Verbindungskopf.
DE3685230D1 (de)	1992-06-17	Magnetkopf.
DE3886569D1 (de)	1994-02-10	Magnetkopf.
DE3679657D1 (de)	1991-07-11	Magnetkopf.
DE3582949D1 (de)	1991-07-04	Magnetkopf-positioniergeraet.
DE3879799D1 (de)	1993-05-06	Magnetkopf.
DE3888287D1 (de)	1994-04-14	Film-Magnetkopf.
DE3684348D1 (de)	1992-04-23	Magnetkopf.
DE3586873D1 (de)	1993-01-14	Magnetkopfanordnung.
DE68910615D1 (de)	1993-12-16	Magnetkopf.
DE3482069D1 (de)	1990-05-31	Magnetkopf.
DE3679415D1 (de)	1991-07-04	Magnetkopf.
DE3586990D1 (de)	1993-02-25	Kombinierter magnetkopf.
DE3680010D1 (de)	1991-08-08	Magnetkopf.
DE3681806D1 (de)	1991-11-14	Magnetkopf.
DE3584607D1 (de)	1991-12-12	Magnetkopf.
DE68924994D1 (de)	1996-01-18	Magnetkopf.
DE3769750D1 (de)	1991-06-06	Positionierungskopf.
DE3575032D1 (de)	1990-02-01	Magnetkopf.
DE3786479D1 (de)	1993-08-19	Magnetkopf.