ES275904A1 - Método de fabricación de cabezales de grabación y reproducción - Google Patents

Método de fabricación de cabezales de grabación y reproducción

Info

Publication number: ES275904A1
Authority: ES; Spain
Prior art keywords: air gap; translation; head; legally binding; google translate
Prior art date: 1961-03-30
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

Application number

ES275904A

Other languages

English (en)

Spanish (es)

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.)

Koninklijke Philips NV

Original Assignee

Philips Gloeilampenfabrieken 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

1962-03-28

Publication date

1963-01-01

1962-03-28 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1963-01-01 Publication of ES275904A1 publication Critical patent/ES275904A1/es

Status Expired legal-status Critical Current

Links

238000004519 manufacturing process Methods 0.000 title abstract 2
238000000034 method Methods 0.000 title 1
238000002844 melting Methods 0.000 abstract 2
230000008018 melting Effects 0.000 abstract 2
239000011521 glass Substances 0.000 abstract 1
239000000463 material Substances 0.000 abstract 1
238000000465 moulding Methods 0.000 abstract 1
238000005498 polishing Methods 0.000 abstract 1
239000012779 reinforcing material Substances 0.000 abstract 1

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)

ES275904A 1961-03-30 1962-03-28 Método de fabricación de cabezales de grabación y reproducción Expired ES275904A1 (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number	Publication Date
ES275904A1 true ES275904A1 (es)	1963-01-01

Family

ID=19752954

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ES275904A Expired ES275904A1 (es)	1961-03-30	1962-03-28	Método de fabricación de cabezales de grabación y reproducción

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
US3094772A (en) *	1956-07-26	1963-06-25	Philips Corp	Method of producing magnetic heads with accurately predetermined gap heights
GB852533A (en) *	1956-07-26	1960-10-26	Philips Electrical Ind Ltd	Improvements relating to magnetic recording and reproducing heads
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 CH CH362462A patent/CH415091A/de unknown
- 1962-03-27 GB GB11655/62A patent/GB996957A/en not_active Expired
- 1962-03-27 AT AT248762A patent/AT242389B/de active
- 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
DK104577C (da)	1966-06-06
GB996957A (en)	1965-06-30
US3233308A (en)	1966-02-08
SE323818C (sv)	1972-05-23
NL263099A (da)
CH415091A (de)	1966-06-15
AT242389B (de)	1965-09-10

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