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AT253248B - Method for manufacturing one or more pole piece units for magnetic heads for A recording, reproducing and / or erasing magnetic recordings - Google Patents

Method for manufacturing one or more pole piece units for magnetic heads for A recording, reproducing and / or erasing magnetic recordings

Info

Publication number
AT253248B
AT253248B AT859765A AT859765A AT253248B AT 253248 B AT253248 B AT 253248B AT 859765 A AT859765 A AT 859765A AT 859765 A AT859765 A AT 859765A AT 253248 B AT253248 B AT 253248B
Authority
AT
Austria
Prior art keywords
reproducing
recording
manufacturing
pole piece
magnetic
Prior art date
Application number
AT859765A
Other languages
German (de)
Original Assignee
Philips 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.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of AT253248B publication Critical patent/AT253248B/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • 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
    • 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
    • G11B5/232—Manufacture of gap
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
AT859765A 1964-09-22 1965-09-21 Method for manufacturing one or more pole piece units for magnetic heads for A recording, reproducing and / or erasing magnetic recordings AT253248B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39825664A 1964-09-22 1964-09-22

Publications (1)

Publication Number Publication Date
AT253248B true AT253248B (en) 1967-03-28

Family

ID=23574654

Family Applications (1)

Application Number Title Priority Date Filing Date
AT859765A AT253248B (en) 1964-09-22 1965-09-21 Method for manufacturing one or more pole piece units for magnetic heads for A recording, reproducing and / or erasing magnetic recordings

Country Status (5)

Country Link
AT (1) AT253248B (en)
BE (1) BE669991A (en)
DE (1) DE1472027A1 (en)
GB (1) GB1113292A (en)
NL (1) NL6512107A (en)

Also Published As

Publication number Publication date
DE1472027A1 (en) 1968-12-05
NL6512107A (en) 1966-03-23
BE669991A (en)
GB1113292A (en) 1968-05-08

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