EP0670786A1 - Film ou couche anti-reproduction. - Google Patents

Film ou couche anti-reproduction.

Info

Publication number
EP0670786A1
EP0670786A1 EP93923480A EP93923480A EP0670786A1 EP 0670786 A1 EP0670786 A1 EP 0670786A1 EP 93923480 A EP93923480 A EP 93923480A EP 93923480 A EP93923480 A EP 93923480A EP 0670786 A1 EP0670786 A1 EP 0670786A1
Authority
EP
European Patent Office
Prior art keywords
film
layer
transparent
grooves
copy
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
EP93923480A
Other languages
German (de)
English (en)
Other versions
EP0670786B1 (fr
Inventor
Helmut Steininger
Peter Heilmann
Peter Hewkin
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.)
Emtec Magnetics GmbH
Original Assignee
BASF Magnetics GmbH
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 BASF Magnetics GmbH filed Critical BASF Magnetics GmbH
Publication of EP0670786A1 publication Critical patent/EP0670786A1/fr
Application granted granted Critical
Publication of EP0670786B1 publication Critical patent/EP0670786B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
    • 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
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/08—Photoprinting; Processes and means for preventing photoprinting
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/04—Preventing copies being made of an original
    • G03G21/043—Preventing copies being made of an original by using an original which is not reproducible or only reproducible with a different appearence, e.g. originals with a photochromic layer or a colour background
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • G09F3/0292—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00—Printed matter
    • Y10S283/902—Anti-photocopy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/916—Fraud or tamper detecting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/24413—Metal or metal compound
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
    • Y10T428/24537—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves
    • Y10T428/24579—Parallel ribs and/or grooves with particulate matter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet
    • Y10T428/2462—Composite web or sheet with partial filling of valleys on outer surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
    • Y10T428/24901—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material including coloring matter

Definitions

  • the invention relates to an anti-copying film or layer, consisting of a film or a layer of transparent material with a plurality of spaced-apart, at least partially non-transparent areas, the planes of which are in approximately the same predetermined position with respect to the upper ⁇ surfaces of the film or layer are arranged so that it is essentially transparent from a predetermined angle of view of the surfaces of the anti-copy film.
  • Such a film which is intended to enable copy-proof documents, is effective in covering up graphic information and / or characters of a document or generally a document, in a vertical line of sight, as is present in a copying machine, and the graphic information and / or characters below to make a predetermined other point of view, based on the level of the document, visible.
  • such an anti-copying film is a transparent plastic film with opaque parts located therein or with any notched or sawtooth-shaped surface in cross-section, in which a first oblique or vertical surface is either black or reflective with respect to a vertical viewing angle , related to the level of the film or the document, and the other oblique surface is transparent from a different angle, so that the information or characters are legible.
  • a first oblique or vertical surface is either black or reflective with respect to a vertical viewing angle , related to the level of the film or the document, and the other oblique surface is transparent from a different angle, so that the information or characters are legible.
  • Such notched or sawtooth-shaped surfaces are very difficult to produce, since the surfaces first have to be embossed or hammered in, and then the inclined surfaces have to be provided with a black or reflective material, the accuracy of these operations having to be so great that the Transparent surfaces are not affected, that is to say also partially provided with black and reflective material.
  • black ink is provided in a cross-section of a sawtooth-shaped film in the valley between two successive teeth, which at least partially covers part of the substrate.
  • Practical manufacturing designs are not described here either.
  • An anti-copy Mectium for writing or printing is known from AU-A-610 614, in which the medium contains a photosensitive color system which, when irradiated in a photocopier, makes the scnft unreadable or makes the copy distinguishable from the original , so that either the original is clearly worthless as copied.
  • Anti-copy film or layer for documents consisting of a film or a layer of transparent material with a plurality of spaced apart, at least partially non-transparent areas, the planes of which are approximately the same predetermined position relative to the surfaces of the film or Layer are arranged so that from a predetermined angle of view of the surface of the film or the layer of the anti-copying film is essentially transparent, since it is resolved that the regions consist at least partially of a material which is photochemically non-transparent or reflective material is converted.
  • a second practical solution to the problem is an anti-copying film or layer consisting of a film or a layer of transparent material with a plurality of spaced apart, at least partially non-transparent areas, the planes of which are approximately the same are positioned opposite the surfaces of the film or layer so that from a predetermined point of view of the surface or layer the anti-copy film is substantially transparent, so that the areas are made of coextruded transparent and not transparent transparent plastic material are produced.
  • an anti-copying film or slide consisting of a film or a layer of transparent material with a plurality of spaced-apart, at least partially not transparent areas, the planes of which are arranged in approximately the same predetermined position with respect to the surfaces of the film or layer, so that from a predetermined angle of vision on the surfaces of the anti-copying film it is essentially transparent, that the areas consist of non-transparent or reflective strip material, which are inserted into the same after the extrusion of the transparent material with grooves or grooves.
  • the non-transparent areas are inclined layers, which consist of exposed and developed photosensitive material.
  • the transparent material consists, for example, of a thick photo emulsion that is partially exposed and then developed.
  • the inclined layers are essentially formed through the thickness of the film or layer.
  • the transparent material can also consist of a plastic which contains at least one photosensitive material, and the exposure can take place locally and in an inclined plane relative to the material surface.
  • the film or the layer can be provided on at least one surface with a plurality of approximately parallel and approximately equally spaced grooves or grooves into which the at least one photosensitive substance is introduced.
  • the grooves or grooves can be arranged perpendicularly or obliquely to the film or layer surface.
  • non-transparent or reflecting areas as first opaque or reflecting layers on the top of the film or layer and as second opaque layers on the underside which are horizontally offset from the first opaque layers of the film or the layer are formed on the underside of the film or the layer. Exemplary embodiments of the invention are described below on the basis of schematic drawings.
  • Figure 1A is an anti-copy film with opaque sloping layers
  • 1B shows an anti-copy film with a sawtooth cross section on the surface
  • Figure 2A shows an anti-copy film with rectangular shape grooves and unexposed photosensitive material therein
  • FIG. 2B shows an anti-copy film with diamond-shaped grooves according to FIG. 2A
  • FIG. 3A shows the rectangular shape grooves from FIG. 2A with exposed, opaque photosensitive material
  • FIG. 4A shows a double-sided groove design according to FIG. 3A
  • 4B shows a double-sided groove design according to FIG. 3B
  • photochemically convertible material is any photosensitive material that changes in its physical properties due to the action of radiation (photons, corpuscles), here changes from a transparent to an opaque state.
  • FIG. 1A shows an anti-copying film F or an anti-copying layer consisting of transparent to transparent plastic material, in which a number of parallel inclined layers SS are provided at equal distances from one another, the layers SS being separated by the Total thickness d of the anti-copying film F are continuously formed.
  • the plastic material preferably contains photosensitive substances which are reactive to light of a special wavelength and which make the affected areas opaque or opaque.
  • the effect of light can be limited locally to the predetermined areas of the inclined layers via masks, or rows of light (arrays) or a surface (matrix) can ensure the limited incidence of light.
  • arrays can be any type of light.
  • the radiation should be incident obliquely in order to be able to form the oblique layers SS at a predetermined angle ⁇ , between ⁇ approximately 30 ° to ⁇ approximately 73 °, in particular at ⁇ approximately 45 ° to ⁇ approximately 60 c .
  • the information I of the document D is visible through the transparent layers TS at the angle ⁇ or in the direction of the viewing arrows VI. According to arrows VV, however, information I is hidden and invisible.
  • the opacity of the layers SS should therefore be chosen so that the information is at least indistinctly recordable for standard copying machines and is unreadable for humans.
  • FIG. 1B shows an anti-copying film F1 or an anti-copying layer with a sawtooth-shaped surface OS in cross section.
  • the one flanks of the sawtooth shape are e.g. arranged at an angle ⁇ and the others placed approximately perpendicular.
  • the triangular shape grooves E are in turn filled with photosensitive material-containing plastic PH, whereby, as described above, locally limited light, e.g. every second groove E2 becomes opaque (PHE) and every first groove El remains partially transparent.
  • the inclined surfaces Q can be designed optically such that total reflection occurs with vertical radiation, or they can be formed with a reflective layer QS. This also results in an oblique viewing direction corresponding to the direction VI and an approximately vertical covering direction W (FIG. 1).
  • the film or layer material F1 should be transparent to transparent plastic material which is either designed as a self-supporting film or layer (F1) or is provided with a carrier film or layer G.
  • the grooves of the surface OS can be embossed or during manufacture, e.g. by extrusion or mechanically attached, e.g. by cutting.
  • FIG. 2A shows a further anti-copy film F3 or layer version with longitudinal grooves NU which are approximately rectangular in cross section and which are in turn filled with photosensitive material PH, as described above for FIG. 1B.
  • the plastic of the base material is again transparent to transparent and the grooves NU are made according to the methods described.
  • the PH material is exposed by opaque exposure (arrows LU) and opaque (PHE), as shown by hatching in FIG. 3A.
  • W only part information PI can be copied in the copier, while the supplementary information PP is only visible at an angle (here about 63 °).
  • FIG. 2B Another more favorable embodiment of an anti-copy film F3 or layer is shown in FIG. 2B.
  • the diamond-shaped grooves RU here are either as grooves NU
  • the finished anti-copying film F3 or layer with opaque inclined layers SS in the angular range ⁇ is obtained with FIG. 3A.
  • the grooves NU and RU are formed approximately up to half the thickness d of the film F2 and F3. They can also be deeper. Corresponding to the total thickness d, the depth T of the grooves NU and RU can only be formed if a carrier film or layer G, not shown here, is used, to which the layer F2 or F3 is attached or applied.
  • FIG. 4A shows a rectangular groove film F4 or layer in comparison to F2 on both sides and provided with rectangular grooves NU.
  • the grooves NU1 on the top and NU2 on the bottom are arranged offset from one another.
  • the opaque groove content is produced as described above by means of a photochemical material PH and its full-area exposure (PHE).
  • Partial information is visible in directions VI and VII, the completeness of the visible information increasing with a decrease in the depth T of the grooves NU1 and NU2 regardless of the width bb of the individual grooves NU1 and NU2.
  • FIG. 4B shows a film or layer design F5 corresponding to FIG. 4A, which, in contrast to F3, is formed on both sides with inclined layers SSI and SS2, which can be produced as described above.
  • the sloping layers SSI and SS2 are horizontally offset from one another.
  • the information I is hidden in the vertical viewing direction W and at least partially visible in the oblique direction VI
  • FIGS. 1B, 2A and B, 3A and B and 4A and B can also be realized with opaque or reflective, strip-shaped inserts K without photosensitive groove or groove fillings.
  • the latter can e.g. be inserted into the grooves or grooves immediately after the extrusion of the groove or groove shape material.
  • Anti-copying film or layer consisting of a film or a layer of transparent material with a plurality of spaced-apart, at least partially non-transparent areas, the planes of which are roughly in the same predetermined position with respect to the surfaces of the film or Layer are arranged so that it is essentially transparent from a predetermined viewing angle on the surfaces of the anti-copying film.
  • the areas consist at least partially of a photosensitive material which is converted into non-transparent or reflective material by the action of radiation, wherein grooves or grooves in which the photosensitive material is located can also be provided in the transparent plastic material.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Laminated Bodies (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Cleaning In Electrography (AREA)
  • Printing Methods (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)
  • Credit Cards Or The Like (AREA)
EP93923480A 1992-10-29 1993-10-16 Film ou couche anti-reproduction Expired - Lifetime EP0670786B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4236563A DE4236563A1 (de) 1992-10-29 1992-10-29 Anti-Kopier-Film oder -Schicht
DE4236563 1992-10-29
PCT/EP1993/002860 WO1994009990A1 (fr) 1992-10-29 1993-10-16 Film ou couche anti-reproduction

Publications (2)

Publication Number Publication Date
EP0670786A1 true EP0670786A1 (fr) 1995-09-13
EP0670786B1 EP0670786B1 (fr) 1997-02-26

Family

ID=6471670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93923480A Expired - Lifetime EP0670786B1 (fr) 1992-10-29 1993-10-16 Film ou couche anti-reproduction

Country Status (14)

Country Link
US (1) US5795643A (fr)
EP (1) EP0670786B1 (fr)
JP (1) JP3386076B2 (fr)
KR (1) KR100268157B1 (fr)
CN (1) CN1044349C (fr)
AT (1) ATE149121T1 (fr)
BR (1) BR9307341A (fr)
DE (2) DE4236563A1 (fr)
DK (1) DK0670786T3 (fr)
ES (1) ES2098789T3 (fr)
GR (1) GR3023340T3 (fr)
RU (1) RU2101187C1 (fr)
WO (1) WO1994009990A1 (fr)
ZA (1) ZA938043B (fr)

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DE4320219A1 (de) * 1993-06-18 1994-12-22 Basf Magnetics Gmbh Antikopierfilm
DE4321685A1 (de) * 1993-06-30 1995-03-23 Basf Magnetics Gmbh Antikopierfilm
US5591527A (en) * 1994-11-02 1997-01-07 Minnesota Mining And Manufacturing Company Optical security articles and methods for making same
US6328342B1 (en) * 1995-08-01 2001-12-11 Boris Ilich Belousov Tape data carrier, method and device for manufacturing the same
WO1999008161A1 (fr) * 1997-08-12 1999-02-18 Emtec Matgnetics Gmbh Film anti-copiage pour documents empechant la copie de ces documents dans un dispositif de copiage a angle d'ouverture defini
DE19749789A1 (de) * 1997-11-11 1999-05-12 Bundesdruckerei Gmbh Sicherheitsmerkmal für ein Wert- oder Sicherheitsdokument mit fraktalem Lamellensystem
DE19932240B4 (de) * 1999-07-10 2005-09-01 Bundesdruckerei Gmbh Optisch variabel darstellbare/versteckbare Sicherheitselemente für Wert- und Sicherheitsdokumente
ES2174673B1 (es) * 1999-07-12 2003-08-01 Vijay Atawane Sistema de seguridad para evitar el fotocopiado de documentos.
US6692030B1 (en) * 2000-07-21 2004-02-17 Verify First Technologies, Inc. Security document with nano-pattern
US6398370B1 (en) 2000-11-15 2002-06-04 3M Innovative Properties Company Light control device
US7793846B2 (en) 2001-12-24 2010-09-14 L-1 Secure Credentialing, Inc. Systems, compositions, and methods for full color laser engraving of ID documents
EP1467834A4 (fr) * 2001-12-24 2005-04-06 Digimarc Id Systems Llc Elements de securite grave au laser destines a des documents d'identification et procedes de fabrication de ces elements
US7728048B2 (en) 2002-12-20 2010-06-01 L-1 Secure Credentialing, Inc. Increasing thermal conductivity of host polymer used with laser engraving methods and compositions
US7694887B2 (en) 2001-12-24 2010-04-13 L-1 Secure Credentialing, Inc. Optically variable personalized indicia for identification documents
EP1459239B1 (fr) 2001-12-24 2012-04-04 L-1 Secure Credentialing, Inc. Documents d identification comprenant des informations invis ibles variables et leurs procedes de production
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ATE149121T1 (de) 1997-03-15
ES2098789T3 (es) 1997-05-01
ZA938043B (en) 1995-04-28
CN1044349C (zh) 1999-07-28
DE59305549D1 (de) 1997-04-03
DE4236563A1 (de) 1994-05-05
GR3023340T3 (en) 1997-08-29
US5795643A (en) 1998-08-18
KR100268157B1 (ko) 2000-10-16
RU95121657A (ru) 1996-12-27
JP3386076B2 (ja) 2003-03-10
WO1994009990A1 (fr) 1994-05-11
BR9307341A (pt) 1999-06-01
CN1087730A (zh) 1994-06-08
JPH08505821A (ja) 1996-06-25
RU2101187C1 (ru) 1998-01-10
DK0670786T3 (da) 1997-05-05
EP0670786B1 (fr) 1997-02-26

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