DK104577C - Fremgangsmåde til fremstilling af et magnetisk tonehoved til optagelse og gengivelse med lille spaltebredde. - Google Patents

Fremgangsmåde til fremstilling af et magnetisk tonehoved til optagelse og gengivelse med lille spaltebredde.

Info

Publication number: DK104577C
Authority: DK; Denmark
Prior art keywords: reproducing; recording; producing; slit width; small slit
Prior art date: 1961-03-30

Application number

DK138462AA

Other languages

English (en)

Original Assignee

Philips Nv

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.)

1961-03-30

Filing date

1962-03-27

Publication date

1966-06-06

1962-03-27 Application filed by Philips Nv filed Critical Philips Nv

1966-06-06 Application granted granted Critical

1966-06-06 Publication of DK104577C publication Critical patent/DK104577C/da

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
- G11B5/187—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
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic

Landscapes

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

DK138462AA 1961-03-30 1962-03-27 Fremgangsmåde til fremstilling af et magnetisk tonehoved til optagelse og gengivelse med lille spaltebredde. DK104577C (da)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL263099		1961-03-30

Publications (1)

Publication Number	Publication Date
DK104577C true DK104577C (da)	1966-06-06

Family

ID=19752954

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK138462AA DK104577C (da)	1961-03-30	1962-03-27	Fremgangsmåde til fremstilling af et magnetisk tonehoved til optagelse og gengivelse med lille spaltebredde.

Country Status (8)

Country	Link
US (1)	US3233308A (da)
AT (1)	AT242389B (da)
CH (1)	CH415091A (da)
DK (1)	DK104577C (da)
ES (1)	ES275904A1 (da)
GB (1)	GB996957A (da)
NL (1)	NL263099A (da)
SE (1)	SE323818C (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL289671A (da) *	1963-03-01
NL8200531A (nl) *	1982-02-12	1983-09-01	Philips Nv	Magneetkop met gedeeltelijk uitgeetste wikkelopening.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2933565A (en) *	1953-04-15	1960-04-19	Siemens Ag	Magnetic transducers
US2915812A (en) *	1953-04-21	1959-12-08	Rca Corp	Method of constructing magnetic heads
DE1031020B (de) *	1953-09-07	1958-05-29	Telefunken Gmbh	Magnetisierungskopf fuer Magnettongeraete
GB852533A (en) *	1956-07-26	1960-10-26	Philips Electrical Ind Ltd	Improvements relating to magnetic recording and reproducing heads
US3094772A (en) *	1956-07-26	1963-06-25	Philips Corp	Method of producing magnetic heads with accurately predetermined gap heights
GB827335A (en) *	1957-07-26	1960-02-03	British Broadcasting Corp	Improvements in magnetic recording and reproducing heads
US3104455A (en) *	1959-08-10	1963-09-24	Clevite Corp	Method of manufacturing magnetic transducer head
US3079470A (en) *	1959-12-21	1963-02-26	Armour Res Found	Magnetic transducer head

0
- NL NL263099D patent/NL263099A/xx unknown
1962
- 1962-02-26 US US175536A patent/US3233308A/en not_active Expired - Lifetime
- 1962-03-27 GB GB11655/62A patent/GB996957A/en not_active Expired
- 1962-03-27 AT AT248762A patent/AT242389B/de active
- 1962-03-27 CH CH362462A patent/CH415091A/de unknown
- 1962-03-27 DK DK138462AA patent/DK104577C/da active
- 1962-03-28 ES ES275904A patent/ES275904A1/es not_active Expired
- 1962-03-28 SE SE347762A patent/SE323818C/xx unknown

Also Published As

Publication number	Publication date
SE323818B (sv)	1970-05-11
US3233308A (en)	1966-02-08
ES275904A1 (es)	1963-01-01
CH415091A (de)	1966-06-15
AT242389B (de)	1965-09-10
NL263099A (da)
GB996957A (en)	1965-06-30
SE323818C (sv)	1972-05-23

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