GB1366925A - Magnetic transducer core fabrication technique - Google Patents

Magnetic transducer core fabrication technique

Info

Publication number
GB1366925A
GB1366925A GB5234671A GB5234671A GB1366925A GB 1366925 A GB1366925 A GB 1366925A GB 5234671 A GB5234671 A GB 5234671A GB 5234671 A GB5234671 A GB 5234671A GB 1366925 A GB1366925 A GB 1366925A
Authority
GB
United Kingdom
Prior art keywords
members
glass
magnetic
recesses
transducers
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
GB5234671A
Other languages
English (en)
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.)
RCA Corp
Original Assignee
RCA 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.)
Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Publication of GB1366925A publication Critical patent/GB1366925A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • 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
    • Y10T29/49036—Fabricating head structure or component thereof including measuring or testing
    • Y10T29/49039—Fabricating head structure or component thereof including measuring or testing with dual gap materials
    • 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
    • Y10T29/49057—Using glass bonding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Magnetic Heads (AREA)
GB5234671A 1970-11-19 1971-11-11 Magnetic transducer core fabrication technique Expired GB1366925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9093470A 1970-11-19 1970-11-19

Publications (1)

Publication Number Publication Date
GB1366925A true GB1366925A (en) 1974-09-18

Family

ID=22225015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5234671A Expired GB1366925A (en) 1970-11-19 1971-11-11 Magnetic transducer core fabrication technique

Country Status (5)

Country Link
US (1) US3706132A (de)
JP (1) JPS5139102B1 (de)
CA (1) CA939807A (de)
DE (1) DE2157338A1 (de)
GB (1) GB1366925A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750274A (en) * 1971-05-28 1973-08-07 Texas Instruments Inc Method of making glass bonded recording heads
US3824685A (en) * 1972-02-14 1974-07-23 Bell & Howell Co Method of making a ferrite head
US3851375A (en) * 1972-05-08 1974-12-03 Philips Corp Method of bonding together mouldings of sintered oxidic ferromagnetic material
US4697217A (en) * 1982-10-13 1987-09-29 Sanyo Electric Co., Ltd. Magnetic head having a main core of sheet amorphous magnetic material
AU6032494A (en) * 1993-02-12 1994-08-29 Data Card Corporation Magnetic stripe read/write head

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094772A (en) * 1956-07-26 1963-06-25 Philips Corp Method of producing magnetic heads with accurately predetermined gap heights
US3104455A (en) * 1959-08-10 1963-09-24 Clevite Corp Method of manufacturing magnetic transducer head
US3187411A (en) * 1960-09-27 1965-06-08 Philips Corp Method of manufacturing pole-piece units for magnetic heads
US3229355A (en) * 1962-01-02 1966-01-18 Ibm Method of making a magnetic transducer head
NL288321A (de) * 1962-05-08
US3369292A (en) * 1962-11-23 1968-02-20 North American Phillips Compan Method of forming glass bonded heads
US3479738A (en) * 1967-05-23 1969-11-25 Rca Corp Magnetic heads
US3605259A (en) * 1968-03-06 1971-09-20 Matsushita Electric Ind Co Ltd Method of manufacturing a pair of pole pieces for a magnetic head
US3579214A (en) * 1968-06-17 1971-05-18 Ibm Multichannel magnetic head with common leg

Also Published As

Publication number Publication date
US3706132A (en) 1972-12-19
DE2157338A1 (de) 1972-05-31
CA939807A (en) 1974-01-08
JPS5139102B1 (de) 1976-10-26

Similar Documents

Publication Publication Date Title
ES321648A1 (es) Metodo de fabricaciën de una unidad de pieza polar para un cabezal magnetico destinado a grabar, reproducir y/o borrar grabaciones magneticas
GB1226598A (de)
US3495325A (en) Method of manufacturing multiple magnetic heads for recording
GB1339415A (en) Magnetic head and method of manufacture thereof
GB1366925A (en) Magnetic transducer core fabrication technique
US3624897A (en) Method of making a ferrite head
GB1360448A (en) Electromagnetic transducer assembly and method of making such an assembly
GB1358084A (en) Multi-gap magnetic transducers and methods of making them
US3228092A (en) Magnetic heads with bonding gap spacers
GB1376522A (en) Manufacture of magnetic transducing heads
GB1292945A (en) Magnetic head assembly and method of making the same
JPS5441122A (en) Magnetic head core block
JPS5641520A (en) Magnetic head
GB986543A (en) A method of manufacturing a magnetic head assembly
GB1325239A (en) Magnetic head and method of manufacture thereof
GB1352979A (en) Process in the manufacture of magnetic heads
NO164686C (no) Magnetisk transduktoranordning og fremgangsmaate for dens tilvirkning.
GB1083359A (en) Improved magnetic head assembly and method for manufacturing such an assembly
JPS5431721A (en) Magnetic head and production of the smae
JPS57130224A (en) Magnetic head device
JPS5750315A (en) Production of magnetic head
JPS55135324A (en) Manufacture of thin-film magnetic head
JPS5479610A (en) Production of composite type magnetic head core
GB1512717A (en) Method of manufacturing a magnetic head having a relatively large air-gap and a good resistance to mechanical wear
JPS5258516A (en) Manufacturing process of magnetic head core

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees