FR2033015A5 - - Google Patents

Info

Publication number
FR2033015A5
FR2033015A5 FR7006586A FR7006586A FR2033015A5 FR 2033015 A5 FR2033015 A5 FR 2033015A5 FR 7006586 A FR7006586 A FR 7006586A FR 7006586 A FR7006586 A FR 7006586A FR 2033015 A5 FR2033015 A5 FR 2033015A5
Authority
FR
France
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
FR7006586A
Other languages
French (fr)
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of FR2033015A5 publication Critical patent/FR2033015A5/fr
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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion
    • G11B5/845—Coating a support with a liquid magnetic dispersion in a magnetic field

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
FR7006586A 1969-02-24 1970-02-24 Expired FR2033015A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80140969A 1969-02-24 1969-02-24

Publications (1)

Publication Number Publication Date
FR2033015A5 true FR2033015A5 (de) 1970-11-27

Family

ID=25181013

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7006586A Expired FR2033015A5 (de) 1969-02-24 1970-02-24

Country Status (5)

Country Link
US (1) US3627580A (de)
BE (1) BE746382A (de)
DE (1) DE2008325B2 (de)
FR (1) FR2033015A5 (de)
GB (1) GB1291366A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476362A1 (fr) * 1980-02-19 1981-08-21 Sony Corp Procede pour fabriquer un moyen d'enregistrement magnetique
FR2476891A1 (fr) * 1980-02-22 1981-08-28 Sony Corp Procede de fabrication d'un support d'enregistrement magnetique

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5242363B2 (de) * 1973-03-20 1977-10-24
US4281043A (en) * 1973-10-31 1981-07-28 Graham Magnetics, Inc. Polymodal magnetic recording media and compositions useful therein
US4208447A (en) * 1978-06-05 1980-06-17 International Business Machines Corporation Method for disorienting magnetic particles
EP0043882A1 (de) * 1980-07-16 1982-01-20 Kodak-Pathe Magnetisches Aufzeichnungselement, Verfahren zu seiner Herstellung und seine Verwendung beim Aufzeichnen
JPS5999471A (ja) * 1982-11-29 1984-06-08 Fuji Xerox Co Ltd 磁気記録媒体の製造方法
JPS59124039A (ja) * 1982-12-29 1984-07-18 Fuji Photo Film Co Ltd 磁気記録媒体の製法
DE3308052A1 (de) * 1983-03-08 1984-09-13 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren zur herstellung eines magnetischen aufzeichnungsmaterials mit senkrechtausrichtung
DE3736024C1 (en) * 1987-10-24 1989-03-23 Agfa Gevaert Ag Demagnetising device
JP2514828B2 (ja) * 1988-01-18 1996-07-10 富士写真フイルム株式会社 磁気記録媒体の製造方法
US5420742A (en) * 1993-07-30 1995-05-30 Minnesota Mining And Manufacturing Degausser for tape with plural recorded segments
US7667895B2 (en) 1999-07-08 2010-02-23 Jds Uniphase Corporation Patterned structures with optically variable effects
US7517578B2 (en) * 2002-07-15 2009-04-14 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
US7047883B2 (en) 2002-07-15 2006-05-23 Jds Uniphase Corporation Method and apparatus for orienting magnetic flakes
US11768321B2 (en) 2000-01-21 2023-09-26 Viavi Solutions Inc. Optically variable security devices
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
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
US7241489B2 (en) * 2002-09-13 2007-07-10 Jds Uniphase Corporation Opaque flake for covert security applications
US9164575B2 (en) 2002-09-13 2015-10-20 Jds Uniphase Corporation Provision of frames or borders around pigment flakes for covert security applications
US8025952B2 (en) 2002-09-13 2011-09-27 Jds Uniphase Corporation Printed magnetic ink overt security image
US9458324B2 (en) 2002-09-13 2016-10-04 Viava Solutions Inc. Flakes with undulate borders and method of forming thereof
US7645510B2 (en) 2002-09-13 2010-01-12 Jds Uniphase Corporation Provision of frames or borders around opaque flakes for covert security applications
US7258915B2 (en) * 2003-08-14 2007-08-21 Jds Uniphase Corporation Flake for covert security applications
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
US7550197B2 (en) 2003-08-14 2009-06-23 Jds Uniphase Corporation Non-toxic flakes for authentication of pharmaceutical articles
CA2541568C (en) 2005-04-06 2014-05-13 Jds Uniphase Corporation Dynamic appearance-changing optical devices (dacod) printed in a shaped magnetic field including printable fresnel structures
CA2564764C (en) 2005-10-25 2014-05-13 Jds Uniphase Corporation Patterned optical structures with enhanced security feature
AU2006249295A1 (en) 2005-12-15 2007-07-05 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
CA2592667C (en) 2006-07-12 2014-05-13 Jds Uniphase Corporation Stamping a coating of cured field aligned special effect flakes and image formed thereby
JP4684263B2 (ja) * 2007-06-18 2011-05-18 日立マクセル株式会社 磁気記録媒体の消磁装置及び消磁方法と磁気記録媒体の製造方法
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
CN106925493B (zh) 2012-01-12 2021-06-11 唯亚威通讯技术有限公司 带有由经排列的颜料片形成的动态框架的物品

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2784259A (en) * 1952-12-17 1957-03-05 Armour Res Found Recording and erase head for magnetic recorders
GB933762A (en) * 1958-12-04 1963-08-14 Emi Ltd Improvements in or relating to magnetic recording media
NL277788A (de) * 1961-04-28 1900-01-01
US3256112A (en) * 1962-07-23 1966-06-14 Iit Res Inst Method and apparatus for orienting magnetic particles of a recording medium and magnetic recording medium
GB1116011A (en) * 1965-07-23 1968-06-06 Lew William Karalus Recording tape
US3416949A (en) * 1965-08-02 1968-12-17 Iit Res Inst Low noise record medium and method for producing the same
US3413141A (en) * 1965-09-02 1968-11-26 Ibm Method and apparatus for making oriented magnetic recording media
US3490945A (en) * 1966-11-15 1970-01-20 Rca Corp Magnetic recording element and method for preparing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476362A1 (fr) * 1980-02-19 1981-08-21 Sony Corp Procede pour fabriquer un moyen d'enregistrement magnetique
FR2476891A1 (fr) * 1980-02-22 1981-08-28 Sony Corp Procede de fabrication d'un support d'enregistrement magnetique

Also Published As

Publication number Publication date
DE2008325A1 (de) 1970-11-12
US3627580A (en) 1971-12-14
BE746382A (fr) 1970-07-31
GB1291366A (en) 1972-10-04
DE2008325B2 (de) 1973-07-05

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Legal Events

Date Code Title Description
ST Notification of lapse