FR2558000B1 - MAGNETIC TRANSDUCER HEAD. - Google Patents

MAGNETIC TRANSDUCER HEAD.

Info

Publication number: FR2558000B1
Authority: FR; France
Prior art keywords: transducer head; magnetic transducer; magnetic; head; transducer
Prior art date: 1983-12-30
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

FR8420082A

Other languages

French (fr)

Other versions

FR2558000A1 (en

Inventor

Heikichi Sato Makoto Kubota Shoichi Kano Et Tatsuo Kumura Tomio Kobayashi

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.)

Sony Corp

Original Assignee

Sony 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.)

1983-12-30

Filing date

1984-12-28

Publication date

1994-02-25

1983-12-30 Priority claimed from JP58250988A external-priority patent/JPS60229210A/en

1984-04-18 Priority claimed from JP59078242A external-priority patent/JPS60223012A/en

1984-05-18 Priority claimed from JP9975184A external-priority patent/JPS60243810A/en

1984-12-28 Application filed by Sony Corp filed Critical Sony Corp

1985-07-12 Publication of FR2558000A1 publication Critical patent/FR2558000A1/en

1994-02-25 Application granted granted Critical

1994-02-25 Publication of FR2558000B1 publication Critical patent/FR2558000B1/en

2004-12-28 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic 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
- G11B5/1871—Shaping or contouring of the transducing or guiding surface
- 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
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- 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
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Magnetic Heads (AREA)

FR8420082A 1983-12-30 1984-12-28 MAGNETIC TRANSDUCER HEAD. Expired - Lifetime FR2558000B1 (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
JP58250988A JPS60229210A (en)	1983-12-30	1983-12-30	Magnetic head
JP59078242A JPS60223012A (en)	1984-04-18	1984-04-18	Magnetic head
JP9975184A JPS60243810A (en)	1984-05-18	1984-05-18	Magnetic head

Publications (2)

Publication Number	Publication Date
FR2558000A1 FR2558000A1 (en)	1985-07-12
FR2558000B1 true FR2558000B1 (en)	1994-02-25

Family

ID=27302650

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR8420082A Expired - Lifetime FR2558000B1 (en)	1983-12-30	1984-12-28	MAGNETIC TRANSDUCER HEAD.

Country Status (8)

Country	Link
AT (1)	AT393566B (en)
AU (1)	AU582736B2 (en)
CA (1)	CA1236212A (en)
DE (1)	DE3447700A1 (en)
FR (1)	FR2558000B1 (en)
GB (1)	GB2153581B (en)
IT (1)	IT1182707B (en)
NL (1)	NL194772C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0654527B2 (en) *	1984-11-26	1994-07-20	ソニー株式会社	Magnetic head
DE3634305A1 (en) *	1985-10-09	1987-04-16	Canon Kk	MAGNETIC HEAD
EP0223933B1 (en) *	1985-11-29	1992-12-02	GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG.	Process for producing magnetic heads
JPH0654528B2 (en) *	1986-04-23	1994-07-20	株式会社日立製作所	Magnetic head
JPS62266712A (en) *	1986-05-14	1987-11-19	Mitsubishi Electric Corp	Composite magnetic head
DE3769844D1 (en) *	1986-05-21	1991-06-13	Philips Nv	MAGNETIC HEAD WITH CLOTHED CORE SURFACES.
JPS6370912A (en) *	1986-09-12	1988-03-31	Hitachi Ltd	Glass for joining magnetic head gap
JPS63146202A (en) *	1986-12-09	1988-06-18	Canon Electronics Inc	Magnetic head and its production
JP2513205B2 (en) *	1987-02-04	1996-07-03	ソニー株式会社	Composite magnetic head
GB2268309B (en) *	1992-06-16	1996-09-11	Samsung Electro Mech	Composite magnetic head

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL263324A (en) *	1961-04-07
US4219855A (en) *	1978-12-21	1980-08-26	International Business Machines Corporation	Thin film magnetic head
JPS56124111A (en) *	1980-03-06	1981-09-29	Matsushita Electric Ind Co Ltd	Production of magnetic head
JPS56124112A (en) *	1980-03-06	1981-09-29	Matsushita Electric Ind Co Ltd	Magnetic head
JPS56169214A (en) *	1980-06-02	1981-12-25	Nippon Hoso Kyokai <Nhk>	Magnetic head
KR850001445B1 (en) *	1981-03-10	1985-10-05	이우에 가오루	Magnetic head
JPS58155513A (en) *	1982-03-10	1983-09-16	Hitachi Ltd	Composite magnetic head and its manufacture
JPS58175122A (en) *	1982-04-07	1983-10-14	Hitachi Ltd	Compound magnetic head and its production
JPS598120A (en) *	1982-07-05	1984-01-17	Sharp Corp	Production of magnetic head
JPS59207415A (en) *	1983-05-11	1984-11-24	Hitachi Ltd	Compound magnetic head and its preparation

1984
- 1984-12-18 CA CA000470379A patent/CA1236212A/en not_active Expired
- 1984-12-21 GB GB08432443A patent/GB2153581B/en not_active Expired
- 1984-12-21 AU AU37074/84A patent/AU582736B2/en not_active Expired
- 1984-12-27 IT IT49363/84A patent/IT1182707B/en active
- 1984-12-28 FR FR8420082A patent/FR2558000B1/en not_active Expired - Lifetime
- 1984-12-28 AT AT4127/84A patent/AT393566B/en not_active IP Right Cessation
- 1984-12-28 DE DE3447700A patent/DE3447700A1/en active Granted
- 1984-12-31 NL NL8403971A patent/NL194772C/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
DE3447700C2 (en)	1993-02-18
IT8449363A0 (en)	1984-12-27
NL8403971A (en)	1985-07-16
AT393566B (en)	1991-11-11
GB2153581A (en)	1985-08-21
DE3447700A1 (en)	1985-07-25
AU582736B2 (en)	1989-04-13
ATA412784A (en)	1991-04-15
NL194772C (en)	2003-02-04
AU3707484A (en)	1985-07-04
CA1236212A (en)	1988-05-03
IT8449363A1 (en)	1986-06-27
NL194772B (en)	2002-10-01
GB2153581B (en)	1988-05-25
GB8432443D0 (en)	1985-02-06
IT1182707B (en)	1987-10-05
FR2558000A1 (en)	1985-07-12

Publication	Publication Date	Title
DE3485393D1 (en)	1992-02-13	MAGNETIC HEAD.
FR2562304B1 (en)	1992-10-16	MAGNETIC TRANSDUCER HEAD
FR2535500B1 (en)	1988-02-19	MAGNETIC TRANSDUCER HEAD ASSEMBLY
DE3481247D1 (en)	1990-03-08	MAGNETIC ARRANGEMENT.
FR2539542B1 (en)	1994-04-29	MAGNETIC READING HEAD
FR2551610B3 (en)	1985-11-29	ELECTROMAGNETIC TRANSDUCER
FR2426954B1 (en)	1988-01-08	MAGNETIC TRANSDUCER HEAD
FI840212A (en)	1984-07-21	MAGNETIC STROEMNINGSMAETARE MED KAPACITIV KOPPLING.
FR2511535B1 (en)	1985-01-04	MAGNETIC TRANSDUCER HEAD
BR8207976A (en)	1983-10-04	SUSPENSION SET FOR MAGNETIC TRANSDUCER HEADS
FR2573902B1 (en)	1992-08-14	MAGNETIC TRANSDUCER HEAD
DE3586873D1 (en)	1993-01-14	MAGNETIC HEAD ARRANGEMENT.
FR2558000B1 (en)	1994-02-25	MAGNETIC TRANSDUCER HEAD.
DK524984D0 (en)	1984-11-02	TRANSDUCER
DE3482069D1 (en)	1990-05-31	MAGNETIC HEAD.
GB8418238D0 (en)	1984-08-22	Magnetic transducer head
FR2502824B1 (en)	1985-01-04	MAGNETIC TRANSDUCER HEAD
FR2554902B1 (en)	1986-02-21	IMPROVED TAP HEAD
DE3584607D1 (en)	1991-12-12	MAGNETIC HEAD.
DE3482222D1 (en)	1990-06-13	MAGNETIC HEAD.
FR2433802B1 (en)	1985-10-04	MAGNETIC TRANSDUCER HEAD
DE3575032D1 (en)	1990-02-01	MAGNETIC HEAD.
KR850009670U (en)	1985-12-05	Magnetic head
BR8400103A (en)	1984-08-14	TRANSDUCER
KR850009689U (en)	1985-12-05	Magnetic head device