IT514346A - - Google Patents

Info

Publication number
IT514346A
IT514346A IT514346DA IT514346A IT 514346 A IT514346 A IT 514346A IT 514346D A IT514346D A IT 514346DA IT 514346 A IT514346 A IT 514346A
Authority
IT
Italy
Application number
Other languages
Italian (it)
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.)
Publication of IT514346A publication Critical patent/IT514346A/it

Links

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
    • G11B5/23—Gap features
    • G11B5/235—Selection of material for gap filler
    • 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
    • G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
    • 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
    • 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
    • G11B5/193—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being ferrite or other magnetic particles
    • 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
    • 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
    • Y10T29/4906—Providing winding

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
IT514346D 1953-03-20 IT514346A (en])

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES32694A DE1029585B (de) 1953-03-20 1953-03-20 Verfahren zur Herstellung eines Magnettonkopfes mit einem Kern aus ferromagnetischemMaterial keramischer Natur, sog. Ferrit

Publications (1)

Publication Number Publication Date
IT514346A true IT514346A (en])

Family

ID=7480928

Family Applications (1)

Application Number Title Priority Date Filing Date
IT514346D IT514346A (en]) 1953-03-20

Country Status (4)

Country Link
US (1) US2919312A (en])
DE (1) DE1029585B (en])
FR (1) FR1104790A (en])
IT (1) IT514346A (en])

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3145453A (en) * 1955-10-04 1964-08-25 Philips Corp Method of producing magnetic heads with bonding glass gap spacers
US3145452A (en) * 1958-03-24 1964-08-25 Iit Res Inst Method of making a magnetic head
US3079470A (en) * 1959-12-21 1963-02-26 Armour Res Found Magnetic transducer head
US3228092A (en) * 1960-09-27 1966-01-11 Philips Corp Magnetic heads with bonding gap spacers
US3187411A (en) * 1960-09-27 1965-06-08 Philips Corp Method of manufacturing pole-piece units for magnetic heads
NL263324A (en]) * 1961-04-07
NL277285A (en]) * 1961-04-17
US3246384A (en) * 1961-04-25 1966-04-19 Gen Instrument Corp Method of making a transducer
US3217305A (en) * 1962-07-19 1965-11-09 James S Hanson Glass bonded ferrite magnetic head
US3494026A (en) * 1962-08-13 1970-02-10 Matsushita Electric Ind Co Ltd Methods for manufacturing magnetic heads
US3417465A (en) * 1964-05-19 1968-12-24 Minnesota Mining & Mfg Method of making laminated magnetic head
US3750274A (en) * 1971-05-28 1973-08-07 Texas Instruments Inc Method of making glass bonded recording heads

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612681A (en) * 1945-11-29 1952-10-07 Armour Res Found Method of making magnetic recording heads
US2456767A (en) * 1945-11-29 1948-12-21 Armour Res Found Combination of magnetic transducing and erasing heads
US2585932A (en) * 1948-07-29 1952-02-19 Magnetic Equipment Inc Device for reducing noise in magnetic recording systems
DE807725C (de) * 1948-12-23 1951-07-02 Blaupunkt Werke G M B H Zweign Magnetkopf mit Polschuhen
US2628286A (en) * 1950-03-24 1953-02-10 Rca Corp Magnetic head construction
US2715659A (en) * 1950-10-14 1955-08-16 Ibuka Masaru Magnetic heads for magnetic recording and reproducing apparatus
US2632816A (en) * 1951-03-26 1953-03-24 Stromberg Carlson Co Magnetic recording and reproducing head
US2676392A (en) * 1951-12-22 1954-04-27 Bell Telephone Labor Inc Method of making filamentary electromagnetic transducers
US2658114A (en) * 1952-08-26 1953-11-03 Bell Telephone Labor Inc Magnetic recording-reproducing device
US2711945A (en) * 1953-03-04 1955-06-28 Clevite Corp Magnetic transducer head for high frequency signals

Also Published As

Publication number Publication date
FR1104790A (fr) 1955-11-24
US2919312A (en) 1959-12-29
DE1029585B (de) 1958-05-08

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