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CA939807A - Magnetic transducer fabrication technique - Google Patents

Magnetic transducer fabrication technique

Info

Publication number
CA939807A
CA939807A CA125,814A CA125814A CA939807A CA 939807 A CA939807 A CA 939807A CA 125814 A CA125814 A CA 125814A CA 939807 A CA939807 A CA 939807A
Authority
CA
Canada
Prior art keywords
magnetic transducer
fabrication technique
transducer fabrication
technique
magnetic
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
CA125,814A
Other versions
CA125814S (en
Inventor
Harry Z. Weaver
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
Application granted granted Critical
Publication of CA939807A publication Critical patent/CA939807A/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)
CA125,814A 1970-11-19 1971-10-21 Magnetic transducer fabrication technique Expired CA939807A (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
CA939807A true CA939807A (en) 1974-01-08

Family

ID=22225015

Family Applications (1)

Application Number Title Priority Date Filing Date
CA125,814A Expired CA939807A (en) 1970-11-19 1971-10-21 Magnetic transducer fabrication technique

Country Status (5)

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

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
WO1994018671A1 (en) * 1993-02-12 1994-08-18 Datacard 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
NL278197A (en) * 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
GB1366925A (en) 1974-09-18
JPS5139102B1 (en) 1976-10-26
US3706132A (en) 1972-12-19
DE2157338A1 (en) 1972-05-31

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