IT939108B - Composizione magnetica per mezzo di registrazione e mezzo di registra zione cosi ottenuto - Google Patents

Composizione magnetica per mezzo di registrazione e mezzo di registra zione cosi ottenuto

Info

Publication number
IT939108B
IT939108B IT30296/71A IT3029671A IT939108B IT 939108 B IT939108 B IT 939108B IT 30296/71 A IT30296/71 A IT 30296/71A IT 3029671 A IT3029671 A IT 3029671A IT 939108 B IT939108 B IT 939108B
Authority
IT
Italy
Prior art keywords
registration
magnetic composition
magnetic
composition
Prior art date
Application number
IT30296/71A
Other languages
English (en)
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of IT939108B publication Critical patent/IT939108B/it

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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/71—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the lubricant
    • 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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/714—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the dimension of the magnetic particles
    • 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
    • H01F1/032—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 hard-magnetic materials
    • H01F1/04—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 hard-magnetic materials metals or alloys
    • H01F1/06—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 hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/24413—Metal or metal compound
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
IT30296/71A 1970-12-28 1971-10-26 Composizione magnetica per mezzo di registrazione e mezzo di registra zione cosi ottenuto IT939108B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10212770A 1970-12-28 1970-12-28

Publications (1)

Publication Number Publication Date
IT939108B true IT939108B (it) 1973-02-10

Family

ID=22288250

Family Applications (1)

Application Number Title Priority Date Filing Date
IT30296/71A IT939108B (it) 1970-12-28 1971-10-26 Composizione magnetica per mezzo di registrazione e mezzo di registra zione cosi ottenuto

Country Status (6)

Country Link
US (1) US3790407A (it)
JP (1) JPS5030444B1 (it)
DE (1) DE2148785C3 (it)
FR (1) FR2120694A5 (it)
GB (1) GB1300019A (it)
IT (1) IT939108B (it)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5630609B2 (it) * 1973-11-02 1981-07-16
JPS5816248B2 (ja) * 1975-11-05 1983-03-30 富士写真フイルム株式会社 シンキナジキキロクタイ
US4097620A (en) * 1977-05-02 1978-06-27 Xerox Corporation Magnetic toner particle coating process
US4192902A (en) * 1977-05-02 1980-03-11 Xerox Corporation In situ coating then spray drying of magnetic toner
US4171274A (en) * 1977-07-07 1979-10-16 Xerox Corporation Alteration of tesselated magnetic particles by fracture
GB2008307B (en) * 1977-11-16 1982-05-19 Hitachi Maxell Magnetic recording medium
JPS582414B2 (ja) * 1978-04-24 1983-01-17 日本ビクター株式会社 磁気記録媒体
US4290808A (en) * 1979-03-23 1981-09-22 Allied Chemical Corporation Metallic glass powders from glassy alloys
JPS5629841A (en) * 1979-08-12 1981-03-25 Tdk Corp Magnetic recording medium
US4305993A (en) * 1979-10-09 1981-12-15 Hitachi Maxell, Ltd. Magnetic recording medium
JPS58102504A (ja) * 1981-12-14 1983-06-18 Fuji Photo Film Co Ltd 強磁性微粉末の表面処理方法
JPS58130435A (ja) * 1982-01-29 1983-08-03 Fuji Photo Film Co Ltd 磁気記録媒体
GB2128104A (en) * 1982-10-09 1984-04-26 Stratabord Limited Educational aids games and playthings
JPS5982633A (ja) * 1982-11-02 1984-05-12 Sumitomo Chem Co Ltd 親油性表面を有する磁気記録用研磨剤
US4473619A (en) * 1983-01-24 1984-09-25 Porco Daniel A Magnetic audio recording tape and method of preparation thereof
US4687705A (en) * 1984-05-08 1987-08-18 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPS62221199A (ja) * 1986-03-24 1987-09-29 株式会社　リケン 磁気シ−ルド材
US5164263A (en) * 1986-09-04 1992-11-17 E. I. Du Pont De Nemours & Co. Aluminum nitride flakes and spheres
JPH04195717A (ja) * 1990-11-26 1992-07-15 Hitachi Ltd 磁気記録媒体、その製造方法及び磁気記録装置
US5869148A (en) * 1991-04-23 1999-02-09 Webcraft Technologies Inc. Process for the in-line, high speed manufacturing of magnetic products
US5458948A (en) * 1992-12-18 1995-10-17 Konica Corporation Magnetic recording medium
US6251475B1 (en) * 1998-10-26 2001-06-26 Agfa-Gevaert Preparation of a magnetic layer
US7517578B2 (en) * 2002-07-15 2009-04-14 Jds Uniphase Corporation Method and apparatus for orienting magnetic flakes
US7047883B2 (en) * 2002-07-15 2006-05-23 Jds Uniphase Corporation Method and apparatus for orienting magnetic flakes
US7604855B2 (en) * 2002-07-15 2009-10-20 Jds Uniphase Corporation Kinematic images formed by orienting alignable flakes
US7667895B2 (en) * 1999-07-08 2010-02-23 Jds Uniphase Corporation Patterned structures with optically variable effects
US20070195392A1 (en) * 1999-07-08 2007-08-23 Jds Uniphase Corporation Adhesive Chromagram And Method Of Forming Thereof
AU2001211949B2 (en) * 2000-01-21 2005-08-18 Viavi Solutions Inc. Optically variable security devices
US11768321B2 (en) 2000-01-21 2023-09-26 Viavi Solutions Inc. Optically variable security devices
EP1399446B1 (en) * 2001-06-27 2005-08-03 Cyclacel Limited 2,6,9-substituted purine derivatives and their use in the treatment of proliferative disorders
US6902807B1 (en) * 2002-09-13 2005-06-07 Flex Products, Inc. Alignable diffractive pigment flakes
US7625632B2 (en) * 2002-07-15 2009-12-01 Jds Uniphase Corporation Alignable diffractive pigment flakes and method and apparatus for alignment and images formed therefrom
US7258900B2 (en) * 2002-07-15 2007-08-21 Jds Uniphase Corporation Magnetic planarization of pigment flakes
US11230127B2 (en) 2002-07-15 2022-01-25 Viavi Solutions Inc. Method and apparatus for orienting magnetic flakes
US7934451B2 (en) * 2002-07-15 2011-05-03 Jds Uniphase Corporation Apparatus for orienting magnetic flakes
US20100208351A1 (en) * 2002-07-15 2010-08-19 Nofi Michael R Selective and oriented assembly of platelet materials and functional additives
US7241489B2 (en) * 2002-09-13 2007-07-10 Jds Uniphase Corporation Opaque flake for covert security applications
US7258915B2 (en) * 2003-08-14 2007-08-21 Jds Uniphase Corporation Flake for covert security applications
US7645510B2 (en) 2002-09-13 2010-01-12 Jds Uniphase Corporation Provision of frames or borders around opaque flakes for covert security applications
US9458324B2 (en) 2002-09-13 2016-10-04 Viava Solutions Inc. Flakes with undulate borders and method of forming thereof
US7674501B2 (en) * 2002-09-13 2010-03-09 Jds Uniphase Corporation Two-step method of coating an article for security printing by application of electric or magnetic field
US8025952B2 (en) * 2002-09-13 2011-09-27 Jds Uniphase Corporation Printed magnetic ink overt security image
US9164575B2 (en) * 2002-09-13 2015-10-20 Jds Uniphase Corporation Provision of frames or borders around pigment flakes for covert security applications
GB2400371B (en) * 2003-04-04 2007-08-01 Silberline Ltd Metal pigment composition
US7550197B2 (en) * 2003-08-14 2009-06-23 Jds Uniphase Corporation Non-toxic flakes for authentication of pharmaceutical articles
US20080096009A1 (en) * 2004-06-24 2008-04-24 University Of Delaware High Frequency Soft Magnetic Materials With Laminated Submicron Magnetic Layers And The Methods To Make Them
TWI402106B (zh) 2005-04-06 2013-07-21 Jds Uniphase Corp 印記於含有可印記菲涅耳結構之成型磁場中之動態外觀變化光學裝置（ｄａｃｏｄ）
CA2564764C (en) * 2005-10-25 2014-05-13 Jds Uniphase Corporation Patterned optical structures with enhanced security feature
CA2570965A1 (en) * 2005-12-15 2007-06-15 Jds Uniphase Corporation Security device with metameric features using diffractive pigment flakes
US10343436B2 (en) 2006-02-27 2019-07-09 Viavi Solutions Inc. Security device formed by printing with special effect inks
TWI437059B (zh) * 2006-07-12 2014-05-11 Jds Uniphase Corp 壓印一經硬化及場配向之特效薄片之塗層及藉此形成之圖像
JP2009193069A (ja) 2008-02-13 2009-08-27 Jds Uniphase Corp 光学的な特殊効果フレークを含むレーザ印刷用の媒体
CA3123564C (en) 2012-01-12 2023-12-19 Vladimir P. Raksha Article with a dynamic frame formed with aligned pigment flakes
WO2019099011A1 (en) * 2017-11-16 2019-05-23 Georgia Tech Research Corporation Substrate-compatible inductors with magnetic layers

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1912887A (en) * 1929-12-18 1933-06-06 Andrew Le Roy Chipman Method of making records for reproducing sounds
US2106882A (en) * 1936-12-12 1938-02-01 Magnaflux Corp Paste of paramagnetic particles for use in the examination of paramagnetic materials for flaws by the magnetic method
US2418479A (en) * 1944-02-16 1947-04-08 Du Pont Process for orienting ferromagnetic flakes in paint films
US2954552A (en) * 1946-02-01 1960-09-27 Halpern Otto Reflecting surface and microwave absorptive layer
US2570856A (en) * 1947-03-25 1951-10-09 Du Pont Process for obtaining pigmented films
US3047428A (en) * 1958-01-27 1962-07-31 Fuji Photo Film Co Ltd Magnetic recording material
US3015627A (en) * 1960-07-06 1962-01-02 C K Williams & Co Gamma ferric oxide for magnetic impulse record members
US3139354A (en) * 1961-03-31 1964-06-30 Rca Corp Magnetic recording element containing magnetic particles treated with werner-type complex compound and method of manufacture thereof
US3245826A (en) * 1963-06-12 1966-04-12 Clevite Corp Magnetic recording medium and method of manufacture
DE1232206B (de) * 1964-10-16 1967-01-12 Ampex Magnetischer Aufzeichnungstraeger
US3389105A (en) * 1965-03-05 1968-06-18 Alcan Metal Powders Inc Flake metal powders coated with fluorocarbon resin
GB1153316A (en) * 1966-08-30 1969-05-29 Agfa Gevaert Nv Improved Magnetic Recording Material
US3503882A (en) * 1966-09-06 1970-03-31 Turco Paint & Varnish Co Paint composition
US3592687A (en) * 1968-01-05 1971-07-13 Basf Ag Production of magnetic recording media
US3574685A (en) * 1969-01-14 1971-04-13 Ibm Manufacture of magnetic particles by reacting iron,cobalt,or nickel salts with oxalic acid salts in dialkyl sulfoxide

Also Published As

Publication number Publication date
US3790407A (en) 1974-02-05
FR2120694A5 (it) 1972-08-18
JPS5030444B1 (it) 1975-10-01
DE2148785B2 (de) 1980-09-25
DE2148785C3 (de) 1981-10-29
DE2148785A1 (de) 1972-09-21
GB1300019A (en) 1972-12-20

Similar Documents

Publication Publication Date Title
IT939108B (it) Composizione magnetica per mezzo di registrazione e mezzo di registra zione cosi ottenuto
IT940450B (it) Complesso di valvola elettroma gnetica
IT953134B (it) Striscia di chiusura separabile
BE782905A (fr) Plaque pour thermographie
SE389576B (sv) Magnetiskt registreringsmedium
CH512076A (de) Magnetfeldsonde
IT941666B (it) Preparazione di 3 3 5 5 tetraiso propil 4 4 idrossidifenile
IT1006622B (it) Mezzo di distribuzione
IT956074B (it) Mezzo magnetico di registrazione
BE766834A (fr) Composition de matiere colorante
IT956330B (it) Amplificazioni di immagini fotografiche
AT314675B (de) Magnetische Lagenanzeigevorrichtung
SE389612B (sv) Evaporator av plattyp
BE767137A (fr) Soupape magnetique
AT336157B (de) Plattenkuhler
BE763844A (fr) Melangeur regler par thermostats
DE2049127B2 (de) Bildverstaerker
IT964413B (it) Mezzo per registrazione magnetica
CH498326A (de) Magnetventil
BE764598A (fr) Commutateur magnetique
AT315529B (de) Luftspaltmagnetsystem
BE770780A (fr) Procede de preparation d'epsilon-caprolactone
BG20361A3 (bg) Метод за получаване на заместени n-хидрокси- алкил-2-ариламино-имидазолини-(2)
CH530523A (de) Wandplatte
BE766904A (nl) Magnetisch registreermateriaal