JPS505923B1 - - Google Patents

Info

Publication number
JPS505923B1
JPS505923B1 JP45069648A JP6964870A JPS505923B1 JP S505923 B1 JPS505923 B1 JP S505923B1 JP 45069648 A JP45069648 A JP 45069648A JP 6964870 A JP6964870 A JP 6964870A JP S505923 B1 JPS505923 B1 JP S505923B1
Authority
JP
Japan
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.)
Pending
Application number
JP45069648A
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 filed Critical
Publication of JPS505923B1 publication Critical patent/JPS505923B1/ja
Pending legal-status Critical Current

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
    • 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
    • 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
    • G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
    • G11B5/2452—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track where the dimensions of the effective gap are controlled

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
JP45069648A 1969-08-08 1970-08-08 Pending JPS505923B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84855969A 1969-08-08 1969-08-08

Publications (1)

Publication Number Publication Date
JPS505923B1 true JPS505923B1 (ja) 1975-03-08

Family

ID=25303627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP45069648A Pending JPS505923B1 (ja) 1969-08-08 1970-08-08

Country Status (2)

Country Link
US (1) US3686467A (ja)
JP (1) JPS505923B1 (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7210323A (ja) * 1972-07-26 1974-01-29
NL7210322A (ja) * 1972-07-26 1974-01-29
US4346417A (en) * 1980-03-24 1982-08-24 Spin Physics, Inc. Selectively actuable magnetic head
US4520409A (en) * 1981-07-10 1985-05-28 Fuji Xerox Corporation, Limited Thermal and magnetic recording head
US4398229A (en) * 1981-08-03 1983-08-09 Eastman Kodak Company Magnetic head with versatile gap
US4628374A (en) * 1981-08-18 1986-12-09 Iit Research Institute Magnetic recording system and method
US4646184A (en) * 1983-09-21 1987-02-24 Ye Data Inc. Magnetic head for recording and reproduction
DE3587634T2 (de) * 1984-08-16 1994-02-17 Ampex Magnetwandler mit elektromagnetisch gesteuertem Abtasten.
NL8701666A (nl) * 1987-07-15 1989-02-01 Philips Nv Magneetkop met een kern met een niet-magnetische spleet.
FR2630852B1 (fr) * 1988-04-27 1994-06-17 Thomson Csf Tete d'enregistrement thermomagnetique
FR2648607B1 (fr) * 1989-06-16 1995-12-15 Thomson Csf Tete magnetique integree d'enregistrement
US5339061A (en) * 1993-06-01 1994-08-16 Michael Ebert Iron-free transformer
US6865057B2 (en) * 1999-10-05 2005-03-08 Seagate Technology Llc Gapless longitudinal magnetic recording head with flux cavity
US6865056B1 (en) 1999-10-05 2005-03-08 Seagate Technology Llc Longitudinal magnetic recording heads with variable-length gaps

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975241A (en) * 1956-12-12 1961-03-14 Armour Res Found Means for counteracting shunt reluctance of a transducer head gap
US2961645A (en) * 1957-09-10 1960-11-22 Ibm Magnetic transducer
US3391254A (en) * 1964-10-15 1968-07-02 William M. Honig Magnetic head with means for producing a shiftable high permeability region in a magnetic permeable material
US3467789A (en) * 1965-09-27 1969-09-16 United Control Corp Magnetic recording head with bias applied to the gap spacer
US3518646A (en) * 1966-02-11 1970-06-30 United Control Corp Transducer with conductive gap material
US3485962A (en) * 1966-11-09 1969-12-23 Gen Electric Magnetic transducer head with remanent flux shunt gap spacer
US3519763A (en) * 1968-02-12 1970-07-07 Rosemount Eng Co Ltd Magnetic recording and reproducing head with gap spacers of low and intermediate permeability material

Also Published As

Publication number Publication date
US3686467A (en) 1972-08-22

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