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
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/346—Perforations
• • 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
• • B42D2033/22—

Definitions

• the present invention relates to a document secured by a series of microperforations.
• An object of the invention is to propose a security means which can serve as a means of authentication both during a level one analysis and during a level two analysis.
• a document which is secured by a series of microperforations visible by transparency, in which the series of microperforations comprises signs which are different from one another, encoding at least one item of information for securing the document.
• the microperforations preferably have a shape that can be seen with the naked eye.
• the signs have a shape with an easily identifiable complex outline.
• the signs thus produced are then difficult to reproduce but easy to recognize, which constitutes a quality criterion of a security means.
• microperforations can be carried out either in the document itself, in particular when the latter is opaque, or only in the printing layers of the document when the latter is transparent, for example in the case of a transparent plastic film, or even in an insert, such as a patch or a strip, which is then fixed on the document.
• the microperforations according to the invention can even be non-opening or be covered by a film or a pellet as soon as the thickness of material closing the microperforation is of sufficient transparency to allow observation of the shape of the microperforation by transparency. .
• this illustrates a first embodiment in which the signs 1 constituting the series of signs produced by the microperforations have different shapes, preferably shapes which are sufficiently complex to make them difficult to perform manually or with rudimentary tools, but in a form that is sufficiently identifiable to be recognized at a glance.
• these signs could take the form of alphabetic characters or digital.
• the encoding is carried out by the sequence of the signs of different shapes so that any modification of the sequence corresponds to different information.
• FIG. 2 illustrates an embodiment in which the signs 2 are all in the form of stars which are produced according to different sizes, the encoding of security information being carried out by the sequence of the sizes of the stars.
• FIG. 3 illustrates an embodiment in which the signs are all arrows 3 which are different from each other by their orientation.
• FIG. 4 illustrates signs in the form of double contiguous triangles 4 which differ from one another by their relative position, the decoding of these signs being able to be carried out by reference to a matrix.
• FIG. 5 illustrates signs 5 in the form of drops which differ from one another on the one hand by the distance dl, d2 which separates the sign from a reference element carried by the bank note, here the upper left corner 9 of the letter E of the term EURO, on the other hand by the angle Al, A2 which separates a horizontal line from the line joining the sign to the reference element.
• the signs 6 are differentiated by their distance by dl, d2, with respect to a strip 7 printed on the bank note or fixed on it, or even inserted therein.
• the coding can be revealed by a moiré phenomenon by folding the ticket or by superposition of a filter independent of the ticket.
• the coding can be repeated several times to provide redundant information to facilitate re-reading. It is also possible to carry out this redundancy with different codings allowing an overlap.
• the coding according to the invention can be used to implement the security method described in document FR-A-2,800,896, the authenticator provided for in this method being stored on the ticket by the series of microperforations produced according to the invention.
• Micro-drilling can be carried out by any appropriate means, in particular by etching by means of a laser beam, possibly associated with a network of micro-mirrors, which makes it possible to digitally generate a very large number of varied shapes by acting on the micro - mirrors constituting the network, so that the signs obtained are difficult to reproduce with artisanal means.
• the signs produced may be through holes on both sides of the document or blind holes opening out on one side, or even non-emerging cavities produced by focusing the laser inside the material.
• the security information to which the series of micro-holes corresponds is not necessarily carried by the ticket. This information can be stored elsewhere and compared with the information obtained by decoding the series of microperforations.

Landscapes

• Business, Economics & Management (AREA)
• Accounting & Taxation (AREA)
• Finance (AREA)
• Credit Cards Or The Like (AREA)
• Semiconductor Integrated Circuits (AREA)
• Laminated Bodies (AREA)
• Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
• Collating Specific Patterns (AREA)
• Inspection Of Paper Currency And Valuable Securities (AREA)
• Image Processing (AREA)
• Illuminated Signs And Luminous Advertising (AREA)
• Editing Of Facsimile Originals (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=30129653

Family Applications (1)

Country Status (8)

Families Citing this family (3)

Family Cites Families (4)

• 2002
  • 2002-08-02 FR FR0209875A patent/FR2843072B1/fr not_active Expired - Lifetime
• 2003
  • 2003-07-11 MD MDA20050021A patent/MD3290B2/ro not_active IP Right Cessation
  • 2003-07-11 EP EP03784226A patent/EP1525103A1/fr not_active Withdrawn
  • 2003-07-11 OA OA1200500021A patent/OA13000A/fr unknown
  • 2003-07-11 WO PCT/FR2003/002200 patent/WO2004014664A1/fr not_active Ceased
  • 2003-07-11 AU AU2003264714A patent/AU2003264714A1/en not_active Abandoned
• 2005
  • 2005-01-24 MA MA28061A patent/MA27263A1/fr unknown
  • 2005-01-31 TN TNP2005000027A patent/TNSN05027A1/fr unknown

Non-Patent Citations (1)

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