FR1242146A - Transducteur magnétique - Google Patents

Transducteur magnétique

Info

Publication number
FR1242146A
FR1242146A FR812296A FR812296A FR1242146A FR 1242146 A FR1242146 A FR 1242146A FR 812296 A FR812296 A FR 812296A FR 812296 A FR812296 A FR 812296A FR 1242146 A FR1242146 A FR 1242146A
Authority
FR
France
Prior art keywords
magnetic transducer
transducer
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
FR812296A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR1242146A publication Critical patent/FR1242146A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • 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
    • 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
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
FR812296A 1958-12-08 1959-12-07 Transducteur magnétique Expired FR1242146A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US778866A US3120001A (en) 1958-12-08 1958-12-08 Magnetic transducer

Publications (1)

Publication Number Publication Date
FR1242146A true FR1242146A (fr) 1960-12-30

Family

ID=27119517

Family Applications (1)

Application Number Title Priority Date Filing Date
FR812296A Expired FR1242146A (fr) 1958-12-08 1959-12-07 Transducteur magnétique

Country Status (5)

Country Link
US (1) US3120001A (fr)
CH (1) CH377881A (fr)
FR (1) FR1242146A (fr)
GB (1) GB884261A (fr)
NL (1) NL245779A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344237A (en) * 1967-09-26 Desposited film transducing apparatus and method op producing the apparatus
US3224074A (en) * 1960-06-24 1965-12-21 Sylvania Electric Prod Method of making a magnetic recording head structure
NL297787A (fr) * 1962-09-24
US3315242A (en) * 1963-04-24 1967-04-18 Ibm Modulation and transfer of information achieved by speed differential
US3341854A (en) * 1963-04-24 1967-09-12 Ibm Modulating magnetic record transfer means
JPS6022406B2 (ja) 1979-12-13 1985-06-01 富士通株式会社 垂直磁気記録再生用ヘッド
US4748525A (en) * 1986-02-14 1988-05-31 Magnetic Peripherals Inc. Probe head for vertical recording

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749609A (en) * 1950-02-14 1956-06-12 Carnegie Illinois Steel Corp Method of forming hollow metal articles
DE844674C (de) * 1950-10-19 1952-07-24 Lois Leitner Magnetkopf fuer Magnettongeraete
US2804506A (en) * 1951-10-31 1957-08-27 Edward C Schurch Dynamagnetic pick-up system
US2674659A (en) * 1951-11-02 1954-04-06 Bell Telephone Labor Inc Magnetic head and method of making same
US2796359A (en) * 1952-07-05 1957-06-18 Audio Devices Inc Production of magnetic sound recording tape
US2891236A (en) * 1953-05-25 1959-06-16 Burroughs Corp Electromagnetic transducer
NL179879B (nl) * 1953-07-15 Voest Alpine Ag Zeef voor het uit een suspensie afscheiden van vaste stoffen.
US2941045A (en) * 1954-01-29 1960-06-14 Lawrence H Connell Magnetic recording
US2947592A (en) * 1955-08-25 1960-08-02 Sperry Rand Corp High frequency magnetic transducers
US2881518A (en) * 1956-11-23 1959-04-14 Ohio Commw Eng Co Continuous gas plated metal article

Also Published As

Publication number Publication date
US3120001A (en) 1964-01-28
GB884261A (en) 1961-12-13
CH377881A (de) 1964-05-31
NL245779A (fr)

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