GB996957A - Improvements in or relating to methods of manufacturing magnetic recording and playback heads having narrow gaps - Google Patents

Improvements in or relating to methods of manufacturing magnetic recording and playback heads having narrow gaps

Info

Publication number
GB996957A
GB996957A GB11655/62A GB1165562A GB996957A GB 996957 A GB996957 A GB 996957A GB 11655/62 A GB11655/62 A GB 11655/62A GB 1165562 A GB1165562 A GB 1165562A GB 996957 A GB996957 A GB 996957A
Authority
GB
United Kingdom
Prior art keywords
magnetic recording
relating
methods
narrow gaps
manufacturing 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
GB11655/62A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB996957A publication Critical patent/GB996957A/en
Expired 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
    • 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
    • G11B5/1871—Shaping or contouring of the transducing or guiding surface
    • 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
    • Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

996,957. Making magnetic recording &c. heads. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. March 27, 1962 [March 30, 1961], No. 11655/62. Headings B3A and B3V. [Also in Division G5] To produce a head-core with a gap 9 not deeper than 25 Á, while maintaining the strength of one with a depth of 150 Á, a recess 5 with a curved end is formed in one ferrite core member 7, filled with glass or the like 6, ground and polished along the line 9 and assembled to a second ferrite core-member 8 with a low melting point enamel of similar coefficient of expansion to the ferrite and forming the transducing gap of some 1 to 2 in length. The assembly is finished to the line 3 and at an earlier or later stage the region 4 is ground out in known manner.
GB11655/62A 1961-03-30 1962-03-27 Improvements in or relating to methods of manufacturing magnetic recording and playback heads having narrow gaps Expired GB996957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL263099 1961-03-30

Publications (1)

Publication Number Publication Date
GB996957A true GB996957A (en) 1965-06-30

Family

ID=19752954

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11655/62A Expired GB996957A (en) 1961-03-30 1962-03-27 Improvements in or relating to methods of manufacturing magnetic recording and playback heads having narrow gaps

Country Status (8)

Country Link
US (1) US3233308A (en)
AT (1) AT242389B (en)
CH (1) CH415091A (en)
DK (1) DK104577C (en)
ES (1) ES275904A1 (en)
GB (1) GB996957A (en)
NL (1) NL263099A (en)
SE (1) SE323818C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL289671A (en) * 1963-03-01
NL8200531A (en) * 1982-02-12 1983-09-01 Philips Nv MAGNETIC HEAD WITH PARTIALLY CREATED WRAP OPENING.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2933565A (en) * 1953-04-15 1960-04-19 Siemens Ag Magnetic transducers
US2915812A (en) * 1953-04-21 1959-12-08 Rca Corp Method of constructing magnetic heads
DE1031020B (en) * 1953-09-07 1958-05-29 Telefunken Gmbh Magnetizing head for magnetic recorders
GB852533A (en) * 1956-07-26 1960-10-26 Philips Electrical Ind Ltd Improvements relating to magnetic recording and reproducing heads
US3094772A (en) * 1956-07-26 1963-06-25 Philips Corp Method of producing magnetic heads with accurately predetermined gap heights
GB827335A (en) * 1957-07-26 1960-02-03 British Broadcasting Corp Improvements in magnetic recording and reproducing heads
US3104455A (en) * 1959-08-10 1963-09-24 Clevite Corp Method of manufacturing magnetic transducer head
US3079470A (en) * 1959-12-21 1963-02-26 Armour Res Found Magnetic transducer head

Also Published As

Publication number Publication date
AT242389B (en) 1965-09-10
US3233308A (en) 1966-02-08
SE323818C (en) 1972-05-23
NL263099A (en)
ES275904A1 (en) 1963-01-01
CH415091A (en) 1966-06-15
DK104577C (en) 1966-06-06
SE323818B (en) 1970-05-11

Similar Documents

Publication Publication Date Title
GB1300824A (en) Method for manufacturing magnetic heads
GB1086233A (en) Improvements in or relating to methods of manufacturing pole-piece units for magnetic heads
ATE41256T1 (en) MAGNETIC HEAD.
GB1227061A (en)
GB975275A (en) Improvements relating to methods of manufacturing pole-piece units for magnetic heads
GB1000710A (en) Improvements relating to magnetic heads
GB1139737A (en) Making multitrack magnetic transducer
GB996957A (en) Improvements in or relating to methods of manufacturing magnetic recording and playback heads having narrow gaps
GB1037086A (en) Improvements in or relating to methods of manufacturing multi-track magnetic heads
GB996145A (en) Improvements in or relating to methods of manufacturing magnetic recording and playback heads
GB1009320A (en) Improvements in or relating to methods of manufacturing parts of magnetic heads
JPS54158210A (en) Production of magnetic head
GB1273056A (en) Magnetic transducer assembly
JPS5715217A (en) Magnetic head and its manufacture
JPS6488911A (en) Thin film magnetic head
JPS6442008A (en) Manufacture of magnetic head
JPS539109A (en) Production of magnetic head
GB1376652A (en) Magnetic transducers and to methods of manufacture thereof
JPH0223017B2 (en)
JPS54151427A (en) Production of magnetic head
JPS6450217A (en) Composite type magnetic head
JPS57172523A (en) Magnetic head device
JPS547914A (en) Production of magnetic head core of dual gap type
JPS56163513A (en) Magnetic head
JPS57138025A (en) Manufacture for magnetic head