EP0655032B1 - Film ou couche antiphotocopie pour documents - Google Patents
Film ou couche antiphotocopie pour documents Download PDFInfo
- Publication number
- EP0655032B1 EP0655032B1 EP93915945A EP93915945A EP0655032B1 EP 0655032 B1 EP0655032 B1 EP 0655032B1 EP 93915945 A EP93915945 A EP 93915945A EP 93915945 A EP93915945 A EP 93915945A EP 0655032 B1 EP0655032 B1 EP 0655032B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- layer
- screens
- copy
- coating
- 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.)
- Expired - Lifetime
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Classifications
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- 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
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- 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
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
- B42D25/465—Associating two or more layers using chemicals or adhesives
- B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
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- 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
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- 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
- B42D25/40—Manufacture
- B42D25/405—Marking
- B42D25/415—Marking using chemicals
- B42D25/42—Marking using chemicals by photographic processes
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- 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
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- 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
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- 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
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- B42D2033/04—
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- B42D2033/08—
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- B42D2033/14—
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- B42D2035/34—
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- 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
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
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- 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
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- 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
- Y10S428/914—Transfer or decalcomania
-
- 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.]
-
- 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.]
- Y10T428/24826—Spot bonds connect components
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- 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.]
- Y10T428/24851—Intermediate layer is discontinuous or differential
- Y10T428/24868—Translucent outer layer
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- 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
- Y10T428/31504—Composite [nonstructural laminate]
Definitions
- the invention consists in an anti-copying film or a layer for documents, against copying the same in a copying device, consisting of at least one film or at least one layer of transparent material with a multiplicity of at least partially opaque areas arranged at intervals from one another.
- the planes of which are arranged in approximately the same predetermined position relative to the surfaces of the film or layer, so that the anti-copying film or layer is from an approximately perpendicular viewing angle on the surfaces of the film (s) or layer (s) is substantially opaque and the anti-copy film or layer is substantially transparent from a predetermined viewing angle on the surfaces of the film (s) or layer (s), and that each region is made of at least first opaque covers on one the surfaces of the film (s) or layer (s) and at least second impervious proper covers are formed on at least one of the other of the surfaces of the film (s) or layer (s), and that the at least first and second covers are arranged substantially horizontally.
- such an anti-copying film is a transparent plastic film with an opaque surface or with an indented or sawtooth-shaped surface, in which a first oblique or vertical surface is either black or reflective with respect to a vertical viewing angle, based on the plane 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 a black or reflective material must be provided, the accuracy of these operations must be so great that the transparent surfaces are not affected, that is also partially provided with black and reflective material. Practical manufacturing designs are not described for the theoretical inclined surface formation within the film.
- An anti-copy medium 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 writing illegible or makes the copy clearly distinguishable from the original so that either the original becomes worthless or clearly recognizable as copied.
- Such an anti-copying film is known from NL-A-86 01 250, which consists of at least one layer of a transparent material, on the surfaces of which there are opaque line patterns arranged relative to one another, so that light radiation incident at a certain small angle is not allowed through.
- the line width should correspond approximately to the distance between the lines, so that there is no overlap of the lines on the two opposite surfaces with respect to a radiation incident perpendicularly.
- the distance between the two surfaces bearing the line pattern should be approximately twice the line width.
- an anti-copying film or layer for documents against copying the same in a copying device, consisting of at least one film or at least one layer of transparent material with a multiplicity of at least partially opaque areas arranged at intervals from one another, the planes of which are arranged in approximately the same predetermined position with respect to the surfaces of the film or layer, so that the anti-copying film or layer is from an approximately perpendicular viewing angle on the surfaces of the film (s) or layer (s) is substantially opaque and from a predetermined viewing angle on the surfaces of the film (s) or layer (s) the anti-copy film or the layer is substantially transparent, and that any area of at least first opaque covers on one of the surfaces of the film (s) or layer (s) and at least second opaque covers on at least one of the other surfaces of the film (s Films) or the layer (s) is formed, and that the at least first and second covers are arranged substantially horizontally, solved in that with a total thickness of the film (s) or layer (s) between 5 micro
- a first version of the anti-copying film is given when the first and second covers have approximately the same width on the two surfaces and are arranged with overlaps on a gap of a defined width.
- the defined widths of the gaps between the first and second covers are approximately between 50% and 90% of the widths of the covers.
- first and second covers can have different widths, within the limits specified.
- angle of the connecting straight line between the ends of the width of superimposed first and second covers is in the range from approximately 30 ° to approximately 73 °, in particular approximately 45 ° to approximately 60 °.
- the at least one film or the at least one layer can also be transparently connected to a transparent carrier film.
- the thickness of the carrier film can expediently be at least 70%, in particular 100%, of the thickness of the film (or films) or the layer (s).
- the at least partially opaque covers can have an essentially strip shape and can be arranged approximately parallel and equally spaced from one another.
- a simple and economical method of production is provided by a method for producing an anti-copying film, in which at least one transparent film or at least one transparent layer is produced on at least partially opaque, linear or strip-shaped covers on both sides in a defined manner when the Covers in the defined staggered arrangements on the film in terms of printing technology and / or phototechnology by applying a photosensitive layer on one side of the film, exposing the layer through a mask and then developing and applying a further photosensitive layer on the other side of the film, exposing through a mask and subsequent development are made.
- Developing is understood to mean the development of a photographic emulsion or the hardening of a plastic layer with color components and / or photoinitiators.
- a practical process training is given in that a first photosensitive layer is applied to a transparent film on the one hand, directly exposed and developed and after that a second photosensitive layer is applied to the transparent film on the other hand, indirectly through the first developed photosensitive layer and the film is exposed and developed.
- Another method variant is that a line or stripe structure is applied to a transparent film on the one hand and a photosensitive layer is applied on the other hand, and the photosensitive layer is exposed and developed through the line or stripe structure.
- the exposure can advantageously take place by means of parallel or divergent radiation, so that there is either almost no or a slight overlap of the covers or just a substantial overlap of the covers.
- An advantageous embodiment of the method results if, on the one hand, a negative resist layer is applied to a transparent film and a positive resist layer is applied to the other side and both layers are formed by exposure through a line structure mask from the side of the negative resist layer and washing out of both layers are.
- the photosensitive layer material can expediently be a photographic emulsion or else a plastic layer with photoinitiators and possibly with color components.
- a non-opaque layer material is made opaque before application, in particular by adding colors.
- a non-opaque layer material can be coated with opaque material after application, exposure and development at the raised or recessed areas, e.g. Color.
- the finished layers with the covers can then be sealed against damage using a transparent lacquer coating.
- An anti-copying film which is produced according to the method steps according to the invention, consists practically in that a first photosensitive layer is applied on the one hand to a transparent film, directly exposed and developed, and thus the first covers are produced, and then a second photosensitive layer on the other hand, applied to the transparent film, indirectly exposed and developed through the first developed photosensitive layer and through the film, and thus the second covers are produced.
- an anti-copying film is produced by the process according to the invention if, on the one hand, a line structure is applied as the first cover and on the other hand a photosensitive layer is applied to a transparent film, the photosensitive layer is exposed through the line structure and then developed, and thus the second covers are made.
- an anti-copying film defined above is exposed by means of parallel radiation, so that almost no or at most a slight overlap of the covers is produced, or if the exposure is carried out by means of divergent light radiation, so that a substantial overlap of the covers is generated.
- an anti-copying film is given according to the method according to the invention if it consists of a negative resist layer applied to a transparent film on the one hand and a positive resist layer applied to the other side, both layers by exposure the first and second covers are produced through a line structure mask from the side of the negative resist layer and washing out of both layers.
- these covers are intended to cover optically.
- a very thin opaque and possibly additionally reflective layer is sufficient for this.
- the layer thickness can reach without further film thickness.
- a plurality of light sources e.g. photodiode arrangement [array]
- the plurality of light sources also being able to be generated optically, for example by diffraction gratings.
- Every corpuscular radiation e.g. electron beams.
- the layers should be black or reflective.
- the copy protection film can be attached to the original to be protected using adhesive or other types of adhesive.
- the oblique opaque planes should be approximately 2.5 ⁇ m thick and approximately 25 ⁇ m apart. The implementation of such a theoretical copy protection film is not described.
- FIG. 1b shows a copy protection film 11 described in the same US Pat. No. 3,887,742 with a plastic material Z which has a sawtooth-shaped surface 12 which is likewise made of transparent plastic.
- the oblique tooth flanks V should be black or reflective, while the vertical flanks W are transparent.
- the information on an original is erased or hidden when viewed vertically or copied and the information is made visible when viewed obliquely (angular range ⁇ as stated above).
- FIGS. 2a and 2b Embodiments of the present invention are shown schematically in FIGS. 2a and 2b.
- the present invention takes the following route.
- Anti-copy films or layers here consist of a transparent film or a transparent layer S (hereinafter referred to as film S), which is provided with approximately parallel and strip-shaped covers A, the above (A1) and below (A2) on the film surfaces and with gaps L to each other and serve as optical covers at defined (approx. vertical) viewing angles and at other viewing angles approx. 30-73 °, in particular approx. 45 ° to approx. 60 °, as optical openings should.
- film S transparent film or a transparent layer S
- covers A the above (A1) and below (A2) on the film surfaces and with gaps L to each other and serve as optical covers at defined (approx. vertical) viewing angles and at other viewing angles approx. 30-73 °, in particular approx. 45 ° to approx. 60 °, as optical openings should.
- the covers A1 and A2 are arranged essentially horizontally, which means that, although slight deviations from the horizontal plane are harmless, they are not necessary in the sense of the invention, such as the inclined plane arrangement in FIGS. 1a and 1b.
- the covers A1 and A2 have the same or different dimensions as can be seen from the comparison of FIGS. 2a and 2b.
- Figure 2a essentially the same widths of A1 and A2 are used at the top and bottom, while in Figure 2b, the widths of the covers A2 'are larger than those of the covers A1'.
- the film thickness s is in the large range from approximately 5 ⁇ m to approximately 300 ⁇ m, in particular between approximately 20 ⁇ m and 100 ⁇ m.
- the film thickness s is practically in the range of 5 ⁇ m ⁇ s ⁇ 100 ⁇ m.
- the longer path (h) of the light rays must also take into account the fact that, in addition to the visible area, there is also an invisible area a on document D which is "optically switched off" by covers A1, A2.
- the value has the maximum value for a a ⁇ 0.3 dg.
- the anti-copy films 13 and 14 can be printed using all suitable printing methods with the parallel line structures (covers) A1, L; Manufacture A2, L or A1 ', L' and A2 ', L' simultaneously on one or both sides.
- the exact positioning of the covers A1 and A1 'relative to their counterparts A2 and A2' is assumed and depends on the respectively given viewing angle ⁇ .
- the thickness of the printing layers is of the order of magnitude of less than 1 ⁇ m, so that the above fear of obtaining enlarged invisible regions a becomes irrelevant.
- layer B1 in a suitable technique, e.g. Laminating, spraying, etc., applied, then exposed through a mask M1 and developed in a suitable manner.
- a suitable technique e.g. Laminating, spraying, etc.
- the layer B2 is then applied, exposed through M2 (which corresponds to M1 and can also be M1) and then developed. Exposure of layer B2 can also expediently take place through layer B1 that has already been exposed and developed. This would make the mask M2 obsolete.
- the exposure is carried out with suitable light sources and is symbolized by the arrows b.
- FIG. 4 shows a variant for producing the anti-copying film 15 in FIG. 3 using the anti-copying film 16.
- the line structure LS is applied to one side of the film S in terms of printing technology.
- the photosensitive layer B is then exposed through the print line structure, which thus takes over the mask function.
- exposure is carried out with parallel light radiation (collimated light) or divergent light.
- parallel light the arrangement of the covers A1 and A2 does not overlap on the gap (FIG. 2a) and overlap in the case of divergent light, such as in Figure 2b.
- FIG. 5 shows an anti-copy film 17 with a photosensitive layer BN and FIG. 6 shows an anti-copy film 18 with a photosensitive layer BP.
- BN stands for negative photoresist material and BP for positive resist material.
- Negative-working photoresists are generally based on photopolymerizable mixtures which, in addition to a polymeric binder, contain a photopolymerizable compound with a photoinitiator.
- Such mixtures contain e.g. partially cyclized polyisoprene as a polymerizable compound and a diazide compound as a photosensitive difunctional crosslinker (photoinitiator).
- Partially cyclized polybutadiene is also known as a polymerizable compound and diazides (see above).
- Positive-working photoresists are conventional systems consisting of a photo-insensitive alkali-soluble matrix based on novolaks and a photosensitive component which acts as a solubility inhibitor and is converted into alkali-soluble products by exposure, so that the entire exposed areas become soluble in the alkaline development solvent.
- Resists for the short-wave UV range are also known, for example, polymethyl methacrylate, copolymers of methyl methacrylate and indenone and of methyl methacrylate and 3-oximino-2-butanone as a photoactive component.
- polymethyl methacrylate copolymers of methyl methacrylate and indenone and of methyl methacrylate and 3-oximino-2-butanone as a photoactive component.
- Suitable photoresist materials can optionally be selected for the purpose of the invention using suitable transparent adhesives or adhesives and can be used with advantage.
- the washed-out spaces R1-R3 in Figure 5c and R4-R5 can be filled with opaque material, e.g. Color pigments or the like can be filled out in a suitable manner, so that in this case the covers are realized by the spaces R1-R5. In these cases, however, the resist material must be transparent.
- FIG. 7 A further production method for an anti-copying film 19 is shown in FIG. 7, the upper layer being a negative resist layer BN and the lower one being a positive resist layer BP.
- the layer BN After exposure of the layer BN and development, after which the hardened parts N1 and N2 remain, is again exposed from above (arrows b) through the finished upper layer, which serves as a mask for the lower layer BP in the exposure process, so that after the parts P1-P3 remain standing during development.
- the negative resist material of the layer BN must be opaque or the same by exposure and washing out, or a mask M must be used or the parts N1 and N2 must be colored opaque before the second exposure by one Cover layer AS, as indicated in Fig. 7b.
- either the raised parts N1, N2 and P1-P3 must be colored opaque, or the gaps, as described for FIGS. 5c, 6c, must be made opaque when the parts N1, N2 and P1 -P3 are transparent.
- the photosensitive layers are applied to the film S in a conventional manner. It is e.g. known to apply very thin layers by adsorptive or adhesive techniques. In general, it can be assumed that the photographically or photopolymerically produced layers are in the thickness range from approximately 0.1 ⁇ m to approximately 10 ⁇ m or only slightly above.
- electrostatic or adhesive forces can of course also be used to attach the films.
- FIG. 10 shows a further variant of the anti-copying films according to the invention, which is distinguished by a multilayer arrangement of individual films or layers.
- 3 individual films or layers S1-S3, each of which has covers A on one side only, can be transparently connected to one another.
- 2 individual films or layers S1 and S2 can also be transparently connected to one another and to a carrier film F.
- the films S1 and S2 would be different in that film S1 or S2 should be provided with covers A on both sides and the other film S2 should only be formed with covers A (below) and S1 only with covers A (above). Multi-layer arrangements are also conceivable.
- transparent such as films, layers, adhesive or adhesive layers
- T ph ⁇ 1 the theoretical maximum value of transparency
- O ph of the materials referred to as "opaque” or light "opaque” Covers should be as large as possible.
- a large light scatter or light reflection of the material that is to act as a cover can also be as advantageous in the sense of the present invention as a material with a large opacity if the incident light quantity J o is very much larger than the transmitted light quantity J ( J o >> J).
- an anti-copying film or layer for originals or documents consists of transparent film material with a large number of spaced-apart, at least partially opaque and possibly reflecting areas which act as covers on the film surfaces essentially in horizontal planes, in particular in parallel are offset from one another, are arranged so that information of an underlying original is covered in an approximately vertical viewing direction and the information is visible in the direction of a predetermined viewing angle.
- Appropriate manufacturing methods enable the use of photo techniques.
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- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Credit Cards Or The Like (AREA)
Claims (26)
- Procédé de fabrication d'un film ou d'une couche anticopie (S) pour documents destiné à empêcher la copie de ceux-ci dans un appareil à copier et constitué d'au moins un film ou au moins une couche (S) de matière transparente ayant un grand nombre de masques en forme de ligne ou de bande au moins partiellement opaques et espacés les uns des autres dont les plans sont placés à peu près dans la même position déterminée par rapport aux faces du film ou de la couche (S), ou qui sont réalisés décalés de manière définie les uns des autres, de sorte que, sous un angle d'observation normale des faces du film (des films) ou de la couche (des couches) (S), le film anticopie est pratiquement opaque, et sous un angle d'observation déterminé des faces du film (des films) ou de la couche (des couches) (S), le film anticopie est pratiquement transparent, caractérisé par le fait qu'on réalise les masques (A1, A2) dans les dispositions décalées définies sur le film (S) par impression et/ou par photogravure en appliquant une couche photosensible (B1) sur une face du film (S), exposant cette couche à travers un masque (M1) puis la développant, et appliquant une autre couche photosensible (B2) sur l'autre face du film (S), l'exposant à travers un masque (M2) puis la développant.
- Procédé selon la revendication 1, caractérisé par le fait qu'on expose l'autre couche photosensible (B2) à travers la première couche (B1) déjà développée.
- Procédé selon la revendication 1, caractérisé par le fait qu'on applique sur un film transparent (S), sur une face, une structure de lignes ou de bandes (LS), et sur l'autre face, une couche photosensible (B), et expose cette couche photosensible (B) à travers la structure de lignes ou de bandes (LS) et ensuite la développe.
- Procédé selon l'une des revendications 1 à 3, caractérisé par le fait qu'on fait l'exposition au moyen d'un rayonnement parallèle, de sorte qu'on n'obtient presque pas de chevauchement des masques (A1, A2) ou obtient au plus un chevauchement minime de ceux-ci.
- Procédé selon l'une des revendications 1 à 3, caractérisé par le fait qu'on fait l'exposition au moyen d'un rayonnement lumineux divergent, de sorte qu'on obtient nettement un chevauchement des masques (A1', A2').
- Procédé selon la revendication 1, caractérisé par le fait qu'on applique sur un film transparent (S), sur une face, une couche de résist négatif (BN), et sur l'autre face, une couche de résist positif (BP), et réalise les masques (A1, A2, A1', A2') en exposant ces deux couches (BN, BP) à travers un masque (M) du côté de la couche de résist négatif (BN) et les dépouillant.
- Procédé selon l'une des revendications 1 à 6, caractérisé par le fait que la matière photosensible des couches est une émulsion photographique.
- Procédé selon l'une des revendications 1 à 6, caractérisé par le fait que la matière photosensible des couches est une couche de plastique pourvue de photoinitiateurs.
- Procédé selon l'une des revendications 1 à 6, caractérisé par le fait qu'on rend opaque une matière de couche non opaque, avant l'application, en particulier par addition de colorant.
- Procédé selon la revendication 1, caractérisé par le fait qu'on pourvoit une matière de couche non opaque de matière opaque aux endroits en saillie ou en creux après l'application, l'exposition et le développement.
- Procédé selon l'une des revendications 1 à 10, caractérisé par le fait qu'on scelle les couches terminées aux masques au moyen d'un revêtement de vernis transparent.
- Film ou couche anticopie (S) pour documents destiné à empêcher la copie de ceux-ci dans un appareil à copier et constitué d'au moins un film ou au moins une couche de matière transparente ayant un grand nombre de zones au moins partiellement opaques espacées les unes des autres dont les plans sont placés à peu près dans la même position déterminée par rapport aux faces du film ou de la couche (S), de sorte que sous un angle d'observation à peu près normale des faces du film (des films) ou de la couche (des couches) (S), le film anticopie est pratiquement opaque, et sous un angle d'observation déterminé des faces du film (des films) ou de la couche (des couches) (S), le film anticopie est pratiquement transparent, et que chaque zone est formée d'au moins des premiers masques opaques (A1) sur une des faces du film (des films) ou de la couche (des couches) (S) et d'au moins des deuxièmes masques opaques (A2) sur au moins une des autres faces du film (des films) ou de la couche (des couches) (S), et que les au moins premiers et deuxièmes masques (A1 et A2) sont placés sensiblement horizontalement, caractérisé par le fait que dans le cas d'une épaisseur totale du film (des films) ou de la couche (des couches) (S) comprise entre 5 m et 100 m et un angle d'ouverture optique effectif d'un appareil à copier compris entre 12° et 108°, la largeur (dg) des masques (A1, A2) est comprise entre 1,75 met 180 m, en particulier entre 8,75 m et 90 m, et la largeur (do) des intervalles (L) entre les masques (A1, A2) est comprise entre 1,0 m et 165 m, en particulier entre 8,0 m et 82,5 m.
- Film anticopie selon la revendication 12, caractérisé par le fait que les premiers et les deuxièmes masques ont à peu près la même largeur (dg) et sont disposés à un intervalle (L) de largeur (do) avec chevauchements.
- Film anticopie selon les revendications 12 et 13, caractérisé par le fait que la largeur (do) des intervalles (L) entre les premiers et les deuxièmes masques (A1, A2) est comprise entre environ 50 % et 90 % de la largeur (dg) des masques (A1, A2).
- Film anticopie selon la revendication 12, caractérisé par des largeurs (dg) différentes des premiers et des deuxièmes masques (A1', A2').
- Film anticopie selon l'une des revendications 12 à 15, caractérisé par le fait que l'angle des droites reliant les extrémités de la largeur (dg) de masques (A1, A2) situés l'un au-dessus de l'autre est compris entre environ 30° et environ 73°, en particulier entre environ 45° et environ 60°.
- Film anticopie selon l'une des revendications 12 à 16, caractérisé par le fait qu'au moins deux films ou couches (S1, S2), en particulier trois (S1 à S3), sont joints de manière transparente.
- Film anticopie selon l'une des revendications 12 à 17, caractérisé par le fait que le film ou les films ou la couche ou les couches (S) est ou sont joint(s) de manière transparente à une feuille support transparente (F).
- Film anticopie selon la revendication 18, caractérisé par le fait que l'épaisseur de la feuille support (F) est d'au moins 70 % de l'épaisseur (s) du film (des films) ou de la couche (des couches) (S).
- Film anticopie selon la revendication 18, caractérisé par le fait que l'épaisseur (s) du film (des films) ou de la couche (des couches) (S) correspond à peu près à l'épaisseur (h) de la feuille support (F).
- Film anticopie selon l'une des revendications 12 à 20, caractérisé par le fait que les masques au moins partiellement opaques (A1, A1', A2, A2') sont sensiblement en forme de bande (ST) et sont placés à peu près parallèlement et également espacés les uns des autres.
- Film anticopie selon l'une des revendications 12 à 21, caractérisé par le fait qu'une première couche photosensible (B) est appliquée sur une face d'un film transparent (S), exposée directement et développée, ce qui réalise les premiers masques (A1), et qu'après cela, une deuxième couche photosensible (B2) est appliquée sur l'autre face du film transparent (S), exposée indirectement à travers la première couche photosensible (B) développée et le film (S) et développée, ce qui réalise les deuxièmes masques (A2).
- Film anticopie selon les revendications 12 à 17, caractérisé par le fait que sur un film transparent (S) sont appliquées, sur une face, une structure de lignes (LS) formant des premiers masques (A1) et, sur l'autre face, une couche photosensible (B), et cette couche photosensible (B) est exposée à travers la structure de lignes (LS) et ensuite développée, ce qui réalise les deuxièmes masques (A2).
- Film anticopie selon la revendication 23, caractérisé par le fait que l'exposition est faite au moyen d'un rayonnement parallèle, de sorte qu'il n'est presque pas produit de chevauchement des masques (A1, A2) ou est produit au plus un chevauchement minime de ceux-ci.
- Film anticopie selon la revendication 23, caractérisé par le fait que l'exposition est faite au moyen d'un rayonnement lumineux divergent, de sorte qu'il est produit nettement un chevauchement des masques (A1', A2').
- Film anticopie selon l'une des revendications 12 à 21, caractérisé par le fait que sur un film transparent (S) sont appliquées, sur une face, une couche de résist négatif (BN) et, sur l'autre face, une couche de résist positif (BP), et les premiers et les deuxièmes masques (A1, A2, A1', A2') sont produits par exposition de ces deux couches (BN, BP) à travers un masque à structure de lignes (M) du côté de la couche de résist négatif (BN) et dépouillement de celles-ci. .
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4226906A DE4226906A1 (de) | 1992-08-14 | 1992-08-14 | Anti-Kopier-Film oder -Schicht für Dokumente |
DE4226906 | 1992-08-14 | ||
PCT/EP1993/001891 WO1994004367A1 (fr) | 1992-08-14 | 1993-07-17 | Film ou couche antiphotocopie pour documents |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0655032A1 EP0655032A1 (fr) | 1995-05-31 |
EP0655032B1 true EP0655032B1 (fr) | 1996-10-09 |
Family
ID=6465534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93915945A Expired - Lifetime EP0655032B1 (fr) | 1992-08-14 | 1993-07-17 | Film ou couche antiphotocopie pour documents |
Country Status (14)
Country | Link |
---|---|
US (1) | US5728449A (fr) |
EP (1) | EP0655032B1 (fr) |
JP (1) | JP3309318B2 (fr) |
KR (1) | KR100268156B1 (fr) |
CN (1) | CN1060118C (fr) |
AT (1) | ATE143870T1 (fr) |
BR (1) | BR9306906A (fr) |
DE (2) | DE4226906A1 (fr) |
DK (1) | DK0655032T3 (fr) |
ES (1) | ES2094554T3 (fr) |
GR (1) | GR3022252T3 (fr) |
RU (1) | RU2102244C1 (fr) |
WO (1) | WO1994004367A1 (fr) |
ZA (1) | ZA935912B (fr) |
Families Citing this family (45)
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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 |
DE4324087A1 (de) * | 1993-07-17 | 1995-01-19 | Basf Magnetics Gmbh | Verfahren zur Herstellung eines Antikopierfilms |
WO1996038307A1 (fr) * | 1995-05-30 | 1996-12-05 | Detar Tamas | Films, formes d'impression et leur procede de fabrication |
DE29714381U1 (de) * | 1997-05-21 | 1997-11-06 | EMTEC Magnetics GmbH, 67059 Ludwigshafen | Anti-Kopierfilm für Dokumente gegen Kopieren derselben in einer Kopiereinrichtung mit definiertem Öffnungswinkel |
DE19721170A1 (de) | 1997-05-21 | 1998-11-26 | Emtec Magnetics Gmbh | Verfahren und Vorrichtung zum Herstellen eines Films oder einer Schicht mit beidseitiger Oberflächenstruktur |
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 |
DE19904282C2 (de) * | 1999-02-03 | 2002-05-29 | Xetos Ag | Informationsträger |
US6189934B1 (en) | 1999-05-10 | 2001-02-20 | Larry W. Scruggs | Anti-copy layer utilizing spectral fragments |
ES2174673B1 (es) * | 1999-07-12 | 2003-08-01 | Vijay Atawane | Sistema de seguridad para evitar el fotocopiado de documentos. |
DE10044465A1 (de) * | 2000-09-08 | 2002-03-21 | Giesecke & Devrient Gmbh | Datenträger mit einem optisch variablen Element |
US7224529B2 (en) * | 2003-09-09 | 2007-05-29 | 3M Innovative Properties Company | Microreplicated article |
US7804649B2 (en) * | 2003-09-09 | 2010-09-28 | 3M Innovative Properties Company | Microreplicated achromatic lens |
US20050231809A1 (en) * | 2003-09-09 | 2005-10-20 | Carlson Daniel H | Microreplicated polarizing article |
US7165959B2 (en) * | 2003-09-09 | 2007-01-23 | 3M Innovative Properties Company | Apparatus and method for producing two-sided patterned webs in registration |
AT501989B1 (de) | 2004-03-26 | 2010-04-15 | Hueck Folien Gmbh | Sicherheitsmerkmal mit unter einem bestimmten betrachtungswinkel optisch erkennbaren merkmalen |
KR20070111544A (ko) * | 2005-03-09 | 2007-11-21 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 미세 복제품 제조 장치 및 방법 |
JP5175172B2 (ja) * | 2005-03-09 | 2013-04-03 | スリーエム イノベイティブ プロパティズ カンパニー | 欠陥低減表面を有する微細複製物品 |
US7931841B2 (en) * | 2005-03-09 | 2011-04-26 | 3M Innovative Properties Company | Microreplicated article |
US20060236877A1 (en) * | 2005-03-09 | 2006-10-26 | Strand John T | Apparatus and method for making microreplicated article |
ATE448927T1 (de) * | 2005-03-09 | 2009-12-15 | 3M Innovative Properties Co | Vorrichtung und verfahren zur herstellung einer zweiseitig gemusterten bahn in deckung |
CN101171532A (zh) * | 2005-03-09 | 2008-04-30 | 3M创新有限公司 | 具有减少莫尔条纹的表面的微复制物品 |
US20070026204A1 (en) * | 2005-07-28 | 2007-02-01 | Michael Patrick Caulley | Embedded watermark |
US7467873B2 (en) * | 2005-10-14 | 2008-12-23 | 3M Innovative Properties Company | Privacy film |
US7326504B2 (en) * | 2005-10-14 | 2008-02-05 | 3M Innovative Properties Company | Imaged anti-copy film |
EP1886827B1 (fr) | 2006-08-11 | 2009-12-23 | National Bank of Belgium | Image cachée |
DE102006050047A1 (de) * | 2006-10-24 | 2008-04-30 | Giesecke & Devrient Gmbh | Durchsichtssicherheitselement mit Mikrostrukturen |
CN101290501B (zh) * | 2007-04-20 | 2011-07-20 | 中国科学院大连化学物理研究所 | 一种基于有机膜结构的防复印膜及其制备 |
DE102008012422A1 (de) * | 2007-10-31 | 2009-05-07 | Bundesdruckerei Gmbh | Verfahren zum Herstellen eines Sicherheitsdokuments und Sicherheitsdokument mit blickrichtungsabhängigem Sicherheitsmerkmal |
DE102008012423A1 (de) * | 2007-10-31 | 2009-05-07 | Bundesdruckerei Gmbh | Verfahren zur Herstellung eines Polymerschichtverbundes und Polymerschichtverbund mit farbigem Sicherheitsmerkmal |
ATE500069T1 (de) * | 2008-01-31 | 2011-03-15 | Nat Bank Of Belgium | Farbumschaltung |
WO2009103021A1 (fr) * | 2008-02-14 | 2009-08-20 | Documotion Research, Inc. | Matériaux de preuve d'effraction pour transporter des informations en sécurité |
DE102009033762A1 (de) | 2009-07-17 | 2011-01-27 | Leonhard Kurz Stiftung & Co. Kg | Verfahren zur Herstellung eines Mehrschichtkörpers sowie Mehrschichtkörper |
DE102009053925A1 (de) * | 2009-11-19 | 2011-05-26 | Giesecke & Devrient Gmbh | Sicherheitselement mit Mikrostruktur |
GB2480227A (en) * | 2010-03-01 | 2011-11-16 | Rue De Int Ltd | Optical security device with spaced microlines |
DE102010022123C5 (de) | 2010-05-20 | 2023-03-02 | Leonhard Kurz Stiftung & Co. Kg | Sicherheitselement |
DE102011006191A1 (de) * | 2011-03-28 | 2012-10-04 | Bundesdruckerei Gmbh | Aus mindestens drei Laminatlagen gebildeter Laminatkörper, Verfahren zu dessen Herstellung und dessen Verwendung |
CN102765251A (zh) * | 2011-05-03 | 2012-11-07 | 郑进 | 一种产生防复印承载介质的打印、复印设备 |
GB201117523D0 (en) * | 2011-10-11 | 2011-11-23 | Rue De Int Ltd | Security devices and methods of manufacture thereof |
CN102658741B (zh) * | 2012-03-21 | 2017-02-15 | 刘峰 | 一种基于视觉密码的可视防复印技术 |
CN103526646A (zh) * | 2013-09-26 | 2014-01-22 | 昆山市长宏印刷厂 | 一种防复印电脑打印纸 |
GB2568077A (en) * | 2017-11-03 | 2019-05-08 | De La Rue Int Ltd | Security document and method of manufacture thereof |
US10976483B2 (en) * | 2019-02-26 | 2021-04-13 | Facebook Technologies, Llc | Variable-etch-depth gratings |
PL432258A1 (pl) | 2019-12-18 | 2021-06-28 | Polska Wytwórnia Papierów Wartościowych Spółka Akcyjna | Element zabezpieczający do nośnika danych, nośnik danych oraz sposób wytwarzania elementu zabezpieczającego i zastosowanie elementu zabezpieczającego do wytwarzania nośnika danych |
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US3887742A (en) * | 1972-04-13 | 1975-06-03 | Richard E Reinnagel | Copy resistant documents |
US4025673A (en) * | 1972-04-13 | 1977-05-24 | Reinnagel Richard E | Method of forming copy resistant documents by forming an orderly array of fibers extending upward from a surface, coating the fibers and printing the coated fibers and the copy resistant document resulting from said method |
US4184700A (en) * | 1975-11-17 | 1980-01-22 | Lgz Landis & Gyr Zug Ag | Documents embossed with optical markings representing genuineness information |
US4066280A (en) * | 1976-06-08 | 1978-01-03 | American Bank Note Company | Documents of value printed to prevent counterfeiting |
NL8601250A (nl) * | 1986-05-16 | 1987-12-16 | Avery International Corp | Folie met beperkte doorlaatbaarheid voor straling. |
GB8912750D0 (en) * | 1989-06-02 | 1989-07-19 | Portals Ltd | Security paper |
-
1992
- 1992-08-14 DE DE4226906A patent/DE4226906A1/de not_active Withdrawn
-
1993
- 1993-07-17 EP EP93915945A patent/EP0655032B1/fr not_active Expired - Lifetime
- 1993-07-17 KR KR1019950700554A patent/KR100268156B1/ko not_active IP Right Cessation
- 1993-07-17 BR BR9306906A patent/BR9306906A/pt not_active IP Right Cessation
- 1993-07-17 AT AT93915945T patent/ATE143870T1/de not_active IP Right Cessation
- 1993-07-17 ES ES93915945T patent/ES2094554T3/es not_active Expired - Lifetime
- 1993-07-17 WO PCT/EP1993/001891 patent/WO1994004367A1/fr active IP Right Grant
- 1993-07-17 RU RU95109101/12A patent/RU2102244C1/ru not_active IP Right Cessation
- 1993-07-17 DE DE59304143T patent/DE59304143D1/de not_active Expired - Fee Related
- 1993-07-17 JP JP50582594A patent/JP3309318B2/ja not_active Expired - Fee Related
- 1993-07-17 DK DK93915945T patent/DK0655032T3/da active
- 1993-07-18 US US08/381,917 patent/US5728449A/en not_active Expired - Fee Related
- 1993-08-13 ZA ZA935912A patent/ZA935912B/xx unknown
- 1993-08-14 CN CN93109674A patent/CN1060118C/zh not_active Expired - Fee Related
-
1997
- 1997-01-09 GR GR970400019T patent/GR3022252T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
JP3309318B2 (ja) | 2002-07-29 |
DE4226906A1 (de) | 1994-02-17 |
BR9306906A (pt) | 1998-12-08 |
DE59304143D1 (de) | 1996-11-14 |
WO1994004367A1 (fr) | 1994-03-03 |
ZA935912B (en) | 1995-02-13 |
EP0655032A1 (fr) | 1995-05-31 |
CN1060118C (zh) | 2001-01-03 |
JPH08503788A (ja) | 1996-04-23 |
US5728449A (en) | 1998-03-17 |
DK0655032T3 (da) | 1996-11-18 |
RU95109101A (ru) | 1996-12-10 |
ES2094554T3 (es) | 1997-01-16 |
GR3022252T3 (en) | 1997-04-30 |
KR100268156B1 (ko) | 2000-10-16 |
RU2102244C1 (ru) | 1998-01-20 |
ATE143870T1 (de) | 1996-10-15 |
CN1086479A (zh) | 1994-05-11 |
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