AR009662A1 - Particulas magneticas, un sustrato que comprende tales particulas, un documento de seguridad, articulo de seguridad y un metodo para detectartales particulas - Google Patents

Particulas magneticas, un sustrato que comprende tales particulas, un documento de seguridad, articulo de seguridad y un metodo para detectartales particulas

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
English (en)
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/es

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)
  • Paints Or Removers (AREA)
  • Cosmetics (AREA)
  • Burglar Alarm Systems (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.
ARP970105815A 1996-12-12 1997-12-11 Particulas magneticas, un sustrato que comprende tales particulas, un documento de seguridad, articulo de seguridad y un metodo para detectartales particulas AR009662A1 (es)

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 (es) 2000-04-26

Family

ID=8225342

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP970105815A AR009662A1 (es) 1996-12-12 1997-12-11 Particulas magneticas, un sustrato que comprende tales particulas, un documento de seguridad, articulo de seguridad y un metodo para detectartales particulas

Country Status (2)

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

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR763681A (fr) 1933-11-10 1934-05-04 Procédé de repérage des objets par modification d'un champ magnétique
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
NL7406230A (es) 1973-05-11 1974-11-13
US3990065A (en) 1975-02-20 1976-11-02 The Magnavox Company Theft detection system
DE2635795B2 (de) * 1975-09-09 1980-08-21 Dasy Inter S.A., Genf (Schweiz) Verfahren und Vorrichtung zur EchtheitskontroHe von Identifuierungskarten u.dgl. Dokumenten
US4218674A (en) 1975-09-09 1980-08-19 Dasy Inter S.A. Method and a system for verifying authenticity safe against forgery
FR2425937A1 (fr) 1978-05-17 1979-12-14 Arjomari Prioux Structure fibreuse contenant des fibres metalliques, son procede de preparation, et son application notamment dans l'industrie du papier
JPS5642217A (en) 1979-09-14 1981-04-20 Nippon Kogaku Kk <Nikon> Diaphragm device of lens that can make close-up flash photographing
WO1985003793A1 (en) 1984-02-15 1985-08-29 Intermodulation And Safety System Ab Method and system for detecting an indicating device
NL8502567A (nl) 1985-09-19 1987-04-16 Bekaert Sa Nv Werkwijze en inrichting voor het op echtheid controleren van voorwerpen en voorwerp geschikt voor het toepassen van deze werkwijze.
EP0295028B1 (en) 1987-06-08 1993-04-14 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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