GB1280127A - Method of manufacturing magnetic heads - Google Patents

Method of manufacturing magnetic heads

Info

Publication number
GB1280127A
GB1280127A GB2323271A GB2323271A GB1280127A GB 1280127 A GB1280127 A GB 1280127A GB 2323271 A GB2323271 A GB 2323271A GB 2323271 A GB2323271 A GB 2323271A GB 1280127 A GB1280127 A GB 1280127A
Authority
GB
United Kingdom
Prior art keywords
gap
heated
magnetic heads
flow temperature
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
GB2323271A
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.)
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 GB1280127A publication Critical patent/GB1280127A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
    • C04B37/005—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts consisting of glass or ceramic material
    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/526—Fibers characterised by the length of the fibers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562—Heating rate
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6565—Cooling rate
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/10—Glass interlayers, e.g. frit or flux
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/34—Oxidic
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/52—Pre-treatment of the joining surfaces, e.g. cleaning, machining
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/62—Forming laminates or joined articles comprising holes, channels or other types of openings
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/64—Forming laminates or joined articles comprising grooves or cuts
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/76—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Magnetic Heads (AREA)
GB2323271A 1970-03-10 1971-04-19 Method of manufacturing magnetic heads Expired GB1280127A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7003350A NL7003350A (enExample) 1970-03-10 1970-03-10

Publications (1)

Publication Number Publication Date
GB1280127A true GB1280127A (en) 1972-07-05

Family

ID=19809540

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2323271A Expired GB1280127A (en) 1970-03-10 1971-04-19 Method of manufacturing magnetic heads

Country Status (8)

Country Link
JP (1) JPS528691B1 (enExample)
AT (1) AT311078B (enExample)
BE (1) BE763957A (enExample)
CA (1) CA952696A (enExample)
DE (1) DE2109218C3 (enExample)
FR (1) FR2084429A5 (enExample)
GB (1) GB1280127A (enExample)
NL (1) NL7003350A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105460A3 (en) * 1982-10-06 1985-05-15 International Business Machines Corporation Method of bonding ceramic bodies together with glass

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1320971A (en) * 1970-06-16 1973-06-20 Int Computers Ltd Method of bonding ferrite components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0105460A3 (en) * 1982-10-06 1985-05-15 International Business Machines Corporation Method of bonding ceramic bodies together with glass

Also Published As

Publication number Publication date
AT311078B (de) 1973-10-25
JPS528691B1 (enExample) 1977-03-10
DE2109218C3 (de) 1978-04-06
FR2084429A5 (enExample) 1971-12-17
CA952696A (en) 1974-08-13
DE2109218B2 (de) 1977-08-04
NL7003350A (enExample) 1971-09-14
DE2109218A1 (de) 1972-07-20
BE763957A (fr) 1971-09-08

Similar Documents

Publication Publication Date Title
CA995093A (en) Production of magnetic fluids by peptization techniques
IT949427B (it) Metodo di fabbricazione di mate riale vetro ceramico
IT1059868B (it) Metodo per la fabbricazione di alfa galattosidasi mediante microorganismi
IT966309B (it) Procedimento per la produzione di ossido ferrico magnetico ad elevata coercivita
CA975382A (en) Process for the manufacture of acrylonitrile and methacrylonitrile
GB1317220A (en) Method of magnetizing a spring element
IT961412B (it) Vetroceramica e metodo per la sua produzione
IT973717B (it) Procedimento per la produzione di particelle di ferro aciculari stabili e magnetiche
IT941057B (it) Espansione polare magnetica di polvere metallica e suo metodo di fabbricazione
CA918249A (en) Thermomagnetic soldering tip assembly and method
GB1280127A (en) Method of manufacturing magnetic heads
GB975275A (en) Improvements relating to methods of manufacturing pole-piece units for magnetic heads
ES421661A1 (es) Procedimiento de fabricacion de un ladrillo de vidrio pro- visto de un manguito de ensambladura.
CA1015025A (en) Magnetically actuable element and method of making
GB1391400A (en) Method of fabricating laboratory glassware
IT967727B (it) Procedimento per la produzione di particelle sferiche di ossido me tallico o di carburo metallico
IT1046118B (it) Procedimento per la produzione di particelle sferiche di ossido metallico o di carburo metallico
ES370213A1 (es) Un dispositivo de cabeza magnetica.
ES421261A1 (es) Un cuerpo de nucleo para bobina o transformador.
IT986077B (it) Ossido di ferro ferrimagnetico aciculare e procedimento per produrlo
GB1097747A (en) Method of manufacturing a ceramic article
GB1027470A (en) Improvements in and relating to waveguide windows
GB1325239A (en) Magnetic head and method of manufacture thereof
CA959678A (en) Method of bonding together mouldings of sintered oxidic ferromagnetic material
CA869886A (en) Tubing valve and method of manufacture

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee