CA2494592A1 - Security document and verification method - Google Patents

Security document and verification method Download PDF

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Publication number
CA2494592A1
CA2494592A1 CA002494592A CA2494592A CA2494592A1 CA 2494592 A1 CA2494592 A1 CA 2494592A1 CA 002494592 A CA002494592 A CA 002494592A CA 2494592 A CA2494592 A CA 2494592A CA 2494592 A1 CA2494592 A1 CA 2494592A1
Authority
CA
Canada
Prior art keywords
perforations
document
carrier
security document
security
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.)
Granted
Application number
CA002494592A
Other languages
French (fr)
Other versions
CA2494592C (en
Inventor
Ian Daniel Von Fellenberg
Beat Roland Schertenleib
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.)
Orell Fuessli Sicherheitsdruck AG
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2494592A1 publication Critical patent/CA2494592A1/en
Application granted granted Critical
Publication of CA2494592C publication Critical patent/CA2494592C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • 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
    • G07D7/003—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 using security elements
    • 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
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/346—Perforations

Abstract

A security document, such as a banknote or a cheque, is provided with a perforation pattern (5) having holes (5a, 5b) with elongate cross section.
When viewing the perforation pattern (5) from a direction that is non-perpendicular to the surface of the document, different holes will have different optical transmission, which can be verified by eye or electronically. Perforation patterns (5) of this type are hard to forge and easy to verify.

Claims (18)

1. A method for verifying the authenticity of a document, wherein said document comprises a carrier (1) with a plurality of perforations (5a, 5b), wherein at least part of the perforations have an elongate cross section with a minimum and a maximum diameter (d1, d1';
d2, d2'), characterized by the step of viewing the docu-ment from at least one viewing direction (7') that is non-perpendicular to a surface (1a) of the carrier (1) and deriving the authenticity from an optical transmis-sion of said perforations (5a, 5b).
2. The method of claim 1 further comprising the step of comparing the optical transmission of said perforations (5a, 5b) with an expected optical transmis-sion.
3. The method of claim 2 wherein the document is viewed from at least one direction that is perpendicu-lar to a direction parallel to the maximum diameter (d2, d2') of at least some of the perforations (5a, 5b).
4. The method of any of the preceding claims wherein the document is viewed from at least one direc-tion that is perpendicular to a direction parallel to the minimum diameter (d1, d1') of at least some of the perfo-rations (5a, 5b).
5. The method of any of the preceding claims wherein said perforations (5a, 5b) extend through said carrier (1) in a direction perpendicular to said surface.
6. The method of any of the preceding claims wherein the minimum diameter (d1, d1') is substantially equal to or smaller than a thickness (D) of the carrier (1) .
7. A security document comprising carrier (1) and a security feature with a plurality of perforations (5a, 5b) in said carrier, in particular for carrying out the method of any of the preceding claims, wherein at least part of the perforations (5a, 5b) have an elongate cross section with a minimum and a maximum diameter (d1, d1'; d2, d2'), characterized in that the document com-prises at least two perforations (5a, 5b) with different cross sections.
8. The security document of claim 7 wherein said perforations (5a, 5b) have cross sections with equal area but different shape.
9. The security document of any of the claims 7 or 8 wherein said plurality of perforations comprises a first type (5a) and a second type (5b) of perforations, wherein the minimum diameter (d1) of the first type of perforations is parallel to the maximum diameter (d2') of the second type of perforations.
10. The security document of any of the claims 7 to 9 wherein said plurality of perforations (5a, 5b) have equal area of cross section and therefore uni-form transmission when being viewed from a viewing direc-tion perpendicular a surface of said carrier (1).
11. The security document of any of the claims 7 to 10 wherein said perforations (5a, 5b) form a human recognizable transmission pattern when viewed under an angle that is non-perpendicular to a surface of the carrier (1).
12. The security document of any of the claims 7 to 11 wherein said perforations (5a, 5b) extend through said document in a direction perpendicular to a surface (1a) of the carrier (1).
13. The security document of claim 12 wherein each perforation (5a, 5b) has substantially uniform cross section through said document.
14. The security document of any of the claims 7 to 13 wherein the carrier (1) is of flexible plastic or paper, and in particular wherein the security document is a banknote or part of a passport.
15. The security document of any of the claims 7 to 14 wherein some of said perforations (5a, 5b) have circular cross section and/or are arranged in a two-dimensional array.
16. The security document of any of the claims 7 to 15 wherein the minimum diameter (d1, d1') is substantially equal to or smaller than a thickness (D) of the carrier (1).
17. The security pattern of any of the claims 7 to 16 wherein the minimum diameters (d1, d1') of all perforations are equal, and in particular wherein all minimum diameters (d1, d1') of all perforations are par-allel to each other.
18. The security pattern of any of the claims 7 to 17 wherein the maximum diameter (d2, d2') is at least 1.5 times larger than the minimum diameter (d1, d1 ') .
CA2494592A 2002-07-25 2002-07-25 Security document and verification method Expired - Fee Related CA2494592C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2002/002914 WO2004011274A1 (en) 2002-07-25 2002-07-25 Security document and verification method

Publications (2)

Publication Number Publication Date
CA2494592A1 true CA2494592A1 (en) 2004-02-05
CA2494592C CA2494592C (en) 2011-05-03

Family

ID=30776574

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2494592A Expired - Fee Related CA2494592C (en) 2002-07-25 2002-07-25 Security document and verification method

Country Status (13)

Country Link
US (1) US8256683B2 (en)
EP (1) EP1525100B1 (en)
JP (1) JP2005533686A (en)
CN (1) CN100488782C (en)
AT (1) ATE433382T1 (en)
AU (1) AU2002319839A1 (en)
BR (1) BR0212771A (en)
CA (1) CA2494592C (en)
DE (1) DE60232608D1 (en)
ES (1) ES2325315T3 (en)
NO (1) NO329717B1 (en)
UA (1) UA80830C2 (en)
WO (1) WO2004011274A1 (en)

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Also Published As

Publication number Publication date
ATE433382T1 (en) 2009-06-15
AU2002319839A1 (en) 2004-02-16
DE60232608D1 (en) 2009-07-23
WO2004011274A1 (en) 2004-02-05
EP1525100A1 (en) 2005-04-27
US20060006236A1 (en) 2006-01-12
EP1525100B1 (en) 2009-06-10
US8256683B2 (en) 2012-09-04
ES2325315T3 (en) 2009-09-01
NO20041238D0 (en) 2004-03-24
CN1638975A (en) 2005-07-13
BR0212771A (en) 2004-10-13
UA80830C2 (en) 2007-11-12
NO329717B1 (en) 2010-12-06
CN100488782C (en) 2009-05-20
NO20041238L (en) 2004-05-24
CA2494592C (en) 2011-05-03
JP2005533686A (en) 2005-11-10

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Effective date: 20220301

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Effective date: 20200831