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AR009662A1 - MAGNETIC PARTICLES, A SUBSTRATE THAT INCLUDES SUCH PARTICLES, A SECURITY DOCUMENT, SECURITY ARTICLE AND A METHOD FOR PARTICULAR DETECTARTALS - Google Patents

MAGNETIC PARTICLES, A SUBSTRATE THAT INCLUDES SUCH PARTICLES, A SECURITY DOCUMENT, SECURITY ARTICLE AND A METHOD FOR PARTICULAR DETECTARTALS

Info

Publication number
AR009662A1
AR009662A1 ARP970105815A ARP970105815A AR009662A1 AR 009662 A1 AR009662 A1 AR 009662A1 AR P970105815 A ARP970105815 A AR P970105815A AR P970105815 A ARP970105815 A AR P970105815A AR 009662 A1 AR009662 A1 AR 009662A1
Authority
AR
Argentina
Prior art keywords
particles
substrate
security
detectartals
magnetic particles
Prior art date
Application number
ARP970105815A
Other languages
Spanish (es)
Original Assignee
Arjo Wiggins Sa
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 Arjo Wiggins Sa filed Critical Arjo Wiggins Sa
Publication of AR009662A1 publication Critical patent/AR009662A1/en

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Paints Or Removers (AREA)
  • Cosmetics (AREA)

Abstract

Se refiere a un sustrato que comprende un material base y partículas alargadas en el interior de dicho material base, difiriendo las propiedadesmagnéticas de dichas partículas de las propiedades magnéticas correspondientes de dicho material base, teniendo las partículas una forma tan larga y delgadaque su factor de desmagnetizacion N es menor que 1/250, siendo su diámetro menor que 30 micrometros y su campo de saturacion magnética mayor que 100 A/m,preferentemente mayor que 300 A/m.Refers to a substrate comprising a base material and elongated particles inside said base material, the magnetic properties of said particles differing from the corresponding magnetic properties of said base material, the particles having a shape so long and thin that their demagnetization factor N is less than 1/250, its diameter being less than 30 micrometers and its magnetic saturation field greater than 100 A / m, preferably greater than 300 A / m.

ARP970105815A 1996-12-12 1997-12-11 MAGNETIC PARTICLES, A SUBSTRATE THAT INCLUDES SUCH PARTICLES, A SECURITY DOCUMENT, SECURITY ARTICLE AND A METHOD FOR PARTICULAR DETECTARTALS AR009662A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96402721A EP0848356A1 (en) 1996-12-12 1996-12-12 Substrate comprising magnetic particles, security document and method for detecting them

Publications (1)

Publication Number Publication Date
AR009662A1 true AR009662A1 (en) 2000-04-26

Family

ID=8225342

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP970105815A AR009662A1 (en) 1996-12-12 1997-12-11 MAGNETIC PARTICLES, A SUBSTRATE THAT INCLUDES SUCH PARTICLES, A SECURITY DOCUMENT, SECURITY ARTICLE AND A METHOD FOR PARTICULAR DETECTARTALS

Country Status (2)

Country Link
EP (1) EP0848356A1 (en)
AR (1) AR009662A1 (en)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR763681A (en) 1933-11-10 1934-05-04 Method of locating objects by modifying a magnetic field
US3313941A (en) 1963-11-12 1967-04-11 Mortimer M Marks Identifying apparatus employing fibers and polarized light
US3449585A (en) 1966-02-15 1969-06-10 Arnold Trehub Automatic recognition system using constant intensity image bearing light beam
US3631442A (en) 1968-03-22 1971-12-28 Robert E Fearon Anti-shoplifting system
IT1023835B (en) 1973-05-11 1978-05-30 Dasy Int Sa DOCUMENT MATERIAL
US3990065A (en) 1975-02-20 1976-11-02 The Magnavox Company Theft detection system
US4218674A (en) 1975-09-09 1980-08-19 Dasy Inter S.A. Method and a system for verifying authenticity safe against forgery
DE2635795B2 (en) * 1975-09-09 1980-08-21 Dasy Inter S.A., Genf (Schweiz) Method and device for checking the authenticity of identification cards and similar documents
FR2425937A1 (en) 1978-05-17 1979-12-14 Arjomari Prioux FIBROUS STRUCTURE CONTAINING METAL FIBERS, ITS PREPARATION PROCESS, AND ITS APPLICATION ESPECIALLY IN THE PAPER INDUSTRY
JPS5642217A (en) 1979-09-14 1981-04-20 Nippon Kogaku Kk <Nikon> Diaphragm device of lens that can make close-up flash photographing
DE3578228D1 (en) 1984-02-15 1990-07-19 Esselte Meto Eas Int Ab METHOD AND ARRANGEMENT FOR DETECTING A DISPLAY DEVICE.
NL8502567A (en) 1985-09-19 1987-04-16 Bekaert Sa Nv METHOD AND APPARATUS FOR VERIFYING ARTICLES FOR OBJECTS AND OBJECTS SUITABLE FOR THE USE OF THIS METHOD
ES2040343T3 (en) 1987-06-08 1993-10-16 Esselte Meto International Gmbh MAGNETIC DEVICES.
US5602381A (en) 1993-05-19 1997-02-11 Nhk Spring Co., Ltd. Objects to be checked for authenticity, and method and apparatus for checking whether or not objects are authentic
US5451759A (en) 1993-06-24 1995-09-19 Nhk Spring Co., Ltd. Using high-permeability magnetic elements randomly scattered in the objects
US5601931A (en) 1993-12-02 1997-02-11 Nhk Spring Company, Ltd. Object to be checked for authenticity and a method for manufacturing the same
US5672859A (en) 1994-03-04 1997-09-30 N.V. Bekaert S.A. Reproduction apparatus with microwave detection

Also Published As

Publication number Publication date
EP0848356A1 (en) 1998-06-17

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