CN1193299A - Anti-fake document with transparent writable hologram - Google Patents
Anti-fake document with transparent writable hologram Download PDFInfo
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- CN1193299A CN1193299A CN97190450A CN97190450A CN1193299A CN 1193299 A CN1193299 A CN 1193299A CN 97190450 A CN97190450 A CN 97190450A CN 97190450 A CN97190450 A CN 97190450A CN 1193299 A CN1193299 A CN 1193299A
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- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
- G03H1/0252—Laminate comprising a hologram layer
- G03H1/0256—Laminate comprising a hologram layer having specific functional layer
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- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
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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
- B42D25/20—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/0005—Adaptation of holography to specific applications
- G03H1/0011—Adaptation of holography to specific applications for security or authentication
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- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
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Abstract
A security document form such as a bank draft, or other document of value may incorporate a see-through and writeable hologram or diffractive grating as an anti-counterfeit measure. The hologram may extend over all or a portion of the form such as the signature entry area and other data entry areas of the form, e.g. the date, name and numerical value areas. A previous patent utilizing metallized holograms for such applications does not permit good photocopying or microfilming of the document on account of their high reflectance. This photocopying problem is solved by using a see-through, writeable hologram which allows clearly legible photocopies to be made for legitimate use but appearing clearly fraudulent when passed off as the original. An ink-compatible top surface is made by coating with ink-receptive material or by corona discharge treatment as is well known in the industry. Writing or impact printing over the ink-compatible surface of the hologram partially occults the hologram underneath such writing and may cause the embossed surface of the hologram to become etched, so that even if the ink is somehow erased or removed, the writing trace would still remain, thus making it unalterable. The use of such an overlaminated hologram or diffractive grating can be accomplished by tamper-proof pressure sensitive holographic labeling, by hot-stamping the hologram with heat activated adhesive backing, or by embossing the hologram onto polymeric thermoplastic directly coated on the substrate paper or plastic card. The use of such a writeable hologram also permits incorporation of many other anticounterfeit features. Optionally, the hologram may also be covered with a protective laminate after the writing has been applied. This invention thus offer an aesthetically pleasing and cost effective means of forgery prevention for large volume users, while making it prohibitively costly for those attempting to counterfeit.
Description
Invention field
The present invention relates to have the security file or the equipment on the holographic surface that comprises the diffraction grating surface.More specifically, the present invention relates to make these surperficial mutually different methods by using the transparent holographic figure that can write with differentiating for security." hologram " is meant hologram in literary composition of the present invention, comprises the impression diffraction grating.
Background of invention
Modern computer PS and high-resolution duplicator can form high-quality spurious document easily, and this makes to forge document promptly increases in large quantities.Usually the file that is forged comprises: check, alternative document such as birth certificate, banker's check, stock, credit card, high value receipt etc.; Public document such as mobile certificate, identity card, social insurance card, licensing, license, tax file etc., and other valuable documents such as property right certificate, transcripts, graduation (degree) certificate, admission ticket, lottery ticket, air ticket or the like.Add all in such as security files such as credit card and driving licenses that for many years hologram is to increase the difficulty of forging.Hologram can make in addition duplicate for the holography expert is extremely difficult.For example, the multiple multilayer with its colour (17 layers of as many as) 2D and 3D hologram that computer produces, only perhaps have special light according to or condition under could visible hiding image hologram etc.
Dennison discloses the method that a kind of a large amount of making is used for the hologram of security file, is to be used for fast hologram or diffraction pattern on the impression coating thermoplastic in the scraps of paper of plating and/or the heat resistant plastic substrate.If the non-holographic information or the art work will be imprinted on the upper surface, can cover one deck on the hologram and hold the China ink layer so that its blotting.But, this hologram is usually protected with the integrality of maintenance hologram with a transparent lamina and is prevented to duplicate.
There are many patents to propose to use hologram to prevent to forge.For example, Malik discloses the discontinuous reflection hologram of several usefulness and has prevented the method for forging: U.S.Pat, and 5,411,296 in substrate with have that lamination writes personal information and photo etc. between the discontinuous hologram of protection; U.S.Pat5,145,212 adopt the discontinuous hologram that protection is similarly arranged, include two discontinuous holograms side by side opaque structure, each reconstitutes an independent image; U.S.Pat5,142,383 usefulness comprise the discontinuous metalized holographic figure of α numeral shape; With U.S.Pat 4,921, the holographic structure of 319 usefulness rats can be from the air interface reflections light by viscose glue or separation layer and the generation of bonding limit.Again for example, Boswell (U.S.Pat 5,464,690) has described a kind of method of the file of finalizing a text being carried out drop stamping with metalized holographic figure.
Magnetosphere or magnetic ink also are used on the hologram to increase the difficulty of forging.For example, Sander (U.S.Pat 4,631,222) has described a kind of hot padding hologram layer on the magnetosphere upper surface; Suess etc. (U.S.Pat 5,383,687) disclose the method that a kind of making contains the impression hologram layer of additional magnetic layer and metal level.
All anti-counterfeit holograms all are coated with one deck protection top layer, except U.S.Pat5, and 267,753, it relates to the metalized holographic the write figure on the check, and wherein hologram is owing to writing or printing and wittingly by partial destruction.But in metalized holographic figure, when duplicating with microfilm recorder or copying machines, the high reflectance of reflective metal forms blackspot in photostat.This characteristic will be disadvantageous concerning its check carries out the banking of micrography or photomechanical printing all to every day.That need is a kind of transparent holographic figure that writes with antiradar reflectivity, it allow to carry out micrography and photomechanical printing and form writing clearly copy but obviously be illegal when wanting to pretend to be being used for validation record for original paper.
The preparation method of transparent holographic figure on paper or plastic-substrates is to coat polymer/thermoplastic, such as polypropylene, polyvinyl chloride, polyester or styrene etc., and hologram in the above then, this knows in the industry.The hologram that reflectivity is high slightly also can be made by metal very small amount of by deposit, that thickness is nanometer scale.These polymeric layers also can add additive with the enhancing antifalsification, and keep transparent basically and its reflectivity is compared with metalized holographic figure not too high simultaneously.There is different materials to be suitable as the additive of polymer to be used for preparing the transparent holographic figure that can write.The transparent holographic figure that can write is added these materials can be made it be more prone to discriminated union to increase its anti-imitative property.In these materials, have:
(a) can vary with temperature and change the thermocolour dyestuff of color when pressurized (for example between two fingers), can be added in holographic polymer resin or the printing ink, perhaps be added on the paper that will cover with hologram, for example, (U.S.Pat 5 for Borowski, 403,039) a kind of thermocolour printing ink that is used for lottery ticket has been described.In some cases, by this dyestuff is added in the plastic solidification, perhaps under the other situation by it is laminated between the protective layer, the stability of dyestuff accesses improvement.
(b) can change the photochromic dyestuff of color with light irradiation on the contrary, can be added to ink or comprise in the polymer of hologram.For example, Tagaya etc. (U.S.Pat, 5,474,715) have described the method that adds photochromic material in film.
(c) have the fluorescent dye of high extinction coefficient, when being subjected to the light source activation of a certain specific wavelength, can send the light of another specific wavelength.These dyestuffs both can be added to and be used for making hologram in the polymer resin, can be imprinted on the file before covering transparent holographic figure again, also can be added in the paper or plastics as substrate.For example, Sachetti (U.S.Pat 5,172,973) has described label use fluorescence and the phosphorescent coloring to eye-catching and protectiveness.Fluorescence and phosphorescent compound can have been bought from many companies, such as SICPA Secureink Corporation, and Dela Rue Corp. etc.
(d) without common paper, also available NRC paper or " carbon-free " paper repeatedly duplicate.
Summary of the invention
The present invention is a kind of transparent holographic figure that covers on whole security file or its part.The security file is including, but not limited to bank draft, traveler's check, birth certificate, stock, property right certificate, immigrant's certificate, tax file, transcripts and diploma, membership card or prize-winning certificate, high value receipt, licensing, license, driving license, identity card, social insurance card, credentials, credit card, lottery ticket, air ticket, admission ticket or the like in this article." file " is meant any paper or improved paper substrates in this article, and as check or certificate, perhaps plastic-substrates is as plastics credit cards or identity card.
In the first the most basic embodiment, holographic file and ordinary file are imprinted on paper similarly or improve on paper or the plastic sheet, difference is the transparent holographic figure that can write in all or part of covering of this document upper surface, these parts comprise that signature is inserted the district and/or other important information is inserted the district, such as name, amount of money, date etc.The upper surface of hologram is that transparent appearance ink material is to write or to put on the ink image thereon.Because at hologram is will add signature, write or print, pen, impact printer or laser inscription device etc. can partly destroy the embossing of hologram.This hologram hide and/or etching has suppressed the chance that the adulterator adopts direct IMAGE REPRODUCTION greatly.Even the ink of writing wiped or removed for a certain reason, and person's handwriting still can stay.Therefore this transparent hologram has prevented that the adulterator from changing and has write or stamp body or signature.The file that contains this transparent holographic figure that writes like this, has above increased security aspect false proof.
In the change scheme of first embodiment, on common printed text, can adopt a fritter hologram only to cover signature area, perhaps adopt several such holograms to cover several zones of file.In two kinds of situations, the hologram of this embodiment all covered the signature insert the district and/or various other data insert the district, for example insert the zone of date, payee or proprietary name, amount of money size etc.In this embodiment signature insert district and various data insert the district all be stamped the transparent holographic figure that contains the blotting top layer with carry out destructively writing, printing or etching.
In the 3rd embodiment, promptly in the change scheme of first and/or second embodiment, fluorescent ink can be used on the printed substrates part that will be covered by hologram.
In the 4th embodiment, promptly in the change scheme of the 3rd embodiment, can cover hologram on the file, be mixed with extinction coefficient height and the high fluorescent dye of quantum yield with low concentration in its polymer.
In the 5th embodiment, promptly in the change scheme of the 3rd embodiment, can be in the printing of base paper or plastic clip with thermochromic materials and without fluorescent dye.
In the 6th embodiment, promptly in the change scheme of the 4th embodiment, in the component of polymer of hologram, add the thermocolour dyestuff rather than the fluorescent dye of low concentration.
In the 7th embodiment, promptly in the change scheme of the 3rd embodiment, be used for printed substrates paper or plastic clip a part be photochromic ink rather than fluorescent ink.
In the 8th embodiment, promptly in the change scheme of the 4th embodiment, in the polymer of hologram, contain the photochromic dyestuff rather than the fluorescent dye that have plenty of low concentration.
In the 9th embodiment, promptly in the change of the 3rd claim, what use in the printing of base paper or plastics is magnetic ink.
In the tenth embodiment, promptly in the change scheme of first or second embodiment, one dimension or two-dimensional bar can be imprinted on the upper surface of base paper or plastic clip or hologram.
In the 11 embodiment: in the change scheme of arbitrary embodiment, after inserting literal, add transparent protectiveness top coat promptly.
The accompanying drawing summary
Fig. 1 does not sign or the plane of unissued file, and in this embodiment with the bank draft representative, it has comprised that with individual big hologram signature is inserted the district and data are inserted the district, and signature is inserted district and numerical value and inserted to distinguish to have and comprise the transparent holographic figure that holds black upper surface.
Fig. 2 is the amplification sectional view of the unsigned holographic bank draft of Fig. 1, and int holographic embossing has drawn.
Fig. 3 is that check drawer's signature is signed and the every view of being filled out the holographic bank draft form in back of bank draft.
Fig. 4 is the amplification sectional view of the holographic bank draft form of Fig. 3, has drawn owing to sign by the holographic embossing of partial destruction.
Fig. 5 is the plane that has protection thin layer, completed bank draft form on it.
Fig. 6 is the amplification sectional view of the completed holographic bank draft of Fig. 5, drawn cover the signature on protective clear layer.
Detailed Description Of The Invention
With the example of bank draft, in Fig. 1-6, illustrate the preferred embodiment and the same method for optimizing that uses of holographic bank draft form (2) as the security file.In preferred embodiments, holographic bank draft form (2) comprises that paper substrates or other can support the substrate (4) of the material of hologram.Substrate (4) can comprise printed material, such as with in ordinary bank's draft, use the same, on the base of bank draft form (2) with bank's identify (6) of magnetic ink printing.In whole substrate (4) or its a part of loam cake hologram (10) is arranged, its available conventional method that describes below bonds or is attached in the substrate (4).Those are made common bank draft form (2) clauses and subclauses required and don't that be imprinted in the substrate (4) and can be imprinted on or be included on the hologram (10).For example, the effective language of bank (12) and check drawer's (14) name and address and bank draft form (2) not only can be imprinted in the substrate (4) but also can be imprinted on the hologram (10).In preferred embodiments.The signature that is used for check drawer signature (18) is inserted the various data of district (16) and bank draft form (2) and is inserted district (20), and for example record date, the zone of payee name and bank draft volume is included in hologram (10) zone.These clauses and subclauses can be printed directly on the hologram and part is covered hologram image.In addition, these clauses and subclauses also can be imprinted in the substrate before the hologram on the lamination.
There are three kinds to be applicable to preferred hologram of the present invention (10).First type is the refractive surface (8) of transparent thermoplastic, is formed by impression, is perhaps formed by the ridge (22) of the sub-micrometer scale that is used to form common hologram pattern and the pattern of groove (24).This coating can apply according to the method for coating the thermoplastic coating on paper at a high speed of Dennison.Additive method comprise with heat-sensitive glue holographic picture thin slice (10) drop stamping in substrate (4), perhaps hologram is bonded in the substrate with pressing glue.These methods are known in the industry.Other conventional methods such as impression, plating, etching, ion etching are known, and also can be used to form such hologram (10), promptly have the type of the pattern of ridge (22) and groove (24).Transparent thermoplastic can be made by polymer, such as polypropylene, polyvinyl chloride, styrene, polyacrylic acid (polyacrylics), polyacetals (polyacetates) etc., and the same with common use in these are used.They also can be modified, for example by mixing some materials to increase refractive index and/or to increase the difficulty that the adulterator copies.For example, they can mix a spot of, such as adding thermocolour or the photochromic dyestuff of having bought from Davis Liquid Crystnls.Inc, or such as having bought fluorescent dye etc. from SICPA Secureivle Corp or De la Rue Corp..
Preferably second type of hologram (10) is first type improvement, by add one deck extremely thin, magnitude is the thick coats of metal of tens dusts, thereby kept the transparency, increased the reflectivity of hologram simultaneously, and do not made its reflectivity too high so that be not suitable for legal photomechanical printing.
The third type of preferred hologram (10) adopts transparent photosensitive polymer layer, and the bright dark reference line alternating pattern that contains sub-micrometer scale forms holographic picture, such as having bought from Du Pont.
If the surface of hologram (10) is not suitable for using ink, can on whole hologram (10), add one deck shallow layer so as holding China ink layer (26) or the first floor.Perhaps, this superficial layer also can make it to have Rong Moxing by technology-corona discharge that a kind of industry is known.In another optional embodiment, appearance China ink layer (26) only is added to those data and must adds superincumbent zone.Appearance ink material coating (26) on the hologram also can adopt other pattern.The different materials that the industry is known is suitable for as holding black coating.For example, polyethylene or polyacetals (polyacetate) can be used as the preferred composition that holds China ink layer (26).
In case hologram (10) is covered in substrate (4), and hologram (10) is coated with or part is coated appearance black thin layer (26), by being inserted in data, the holographic bank draft of blank or document form (2) insert suitable data (being date, name, value etc.) in the district (20) so, insert the signature (18) that adds the publisher in the district (16) at the signature of hologram (10) then, just can form effective holographic bank draft or file, shown in Fig. 3 and 4.In preferred version, add signature (18) but should finish with the instrument that ink writing implement or etching are advanced hologram, for example pen, point type impact printer or computer-controlled laser beam Write.Fill out the clauses and subclauses and other data also available inks water-color paintbrush, typewriter, printer, laser inscription device etc. of bank draft at holographic region.If hologram (10) is made by photosensitive polymer layer, add that so signature (18) can stop or cover the part of (18) that bears the signature on the hologram (10), thereby partly destroy the surface of holographic picture.On the other hand, if hologram (10) is the type that comprises the pattern of ridge (22) and groove (24), add that so signature (18) both engraved signature (18) on the hologram pattern of impression, partly stop again or cover bear the signature on the hologram (10) (18) or section data, thereby partly destroy the surface of holographic picture.
Fig. 5 and 6 illustrates the preferred embodiment of holographic bank draft (2), comprises covering the thin protective layer (28) that goes up and prevent or stop its change or removal at signature (18).Preferred protection thin layer (28) contains the composition of polyester film or other transparent membranes, can not only cover signature (18), can also cover the whole substrate (4) of hologram (10) and/or support hologram (10).Protection thin layer (28) should be transparent.For example, also available common adhesive tape is bonded at hologram (10) and goes up conduct protection thin layer (28).Like this, after holographic bank draft form (2) was finished and come into force, holographic part can randomly cover protection thin layer (28) to prevent change.
In another optional embodiment, holographic document form (2) comprises substrate (4) and holographic pasting boards (10), and promptly there is the holographic panel or the label (10) of anti-tampering (tamper-proof) glue at the back side.File (2) is signed by user or its agent, and before use holographic pasting boards (10) directly is bonded in the substrate.Holographic pasting boards (10) can comprise that one or more signatures are inserted district (16) and/or data are inserted district (20).In preferred version, the signature of holographic pasting boards (10) is inserted district and/or data and is inserted the district and filled in after substrate (4) is gone up being bonded at by the user again.But in some situation, the user also can fill in the signature and/or the data of holographic pasting boards (10) and insert the district before adhering in the substrate (4).The preferred back side has the holographic panel (10) of anti-tampering glue can comprise pattern or the image that breaks.In case holographic panel (10) is added in the substrate (4), anyly want that the attempt that peels holographic panel (10) from above all can make holographic picture destroyed, this is owing to stick to substrate (4) back side viscose glue inhomogeneous and to have stayed predetermined break pattern in the substrate (4) or such as the words of engineering noise.The holographic panel (10) of this anti-tampering glue in the back side that contains predetermined break pattern can from, for example Flexcon Inc. (Spencer, Mass) or Bridgestone Graphic TechnologiesInc. (Bridgeport CT) has bought.As bells and whistles, the back side has the holographic panel (10) of anti-tampering glue can stamp sequence number or bar code, and sequence number or bar code can be recorded on the independent book of being safeguarded by issue department or bank.If file is stolen, issue department or bank can be by comparing the ordered sequence slivering font code of the sequence number of paying or bar code and registration the ordered sequence determined on the holographic pasting boards (10) that lacks number or bar code number.Sequence number of paying or bar code are failed with sequence number or bar code contact on the book that is recorded in issue department or bank, and check or the file that just can warn issue department and bank to pay may be invalid.
Claims (19)
1. in the improved form of a kind of bank draft or file, this form comprises:
Printed substrates such as paper, improve paper or plastic clip, contains to be useful on and fills in and show that the data of one or more clauses and subclauses of bank draft or file insert the district;
Be used to fill out or show that the signature of bank draft or file publisher's signature inserts the district;
Cover at signature and insert the district and data are inserted transparent holographic figure in the district, this hologram scribbles the hyaline layer that holds ink material, is suitable for adding publisher's signature and data in the above, also is suitable for showing on holographic picture signing and data.
2. according to the bank draft of claim 1 or the improved form of file, this improvement also comprises:
Described printed substrates made all or part of with thermocolour (thermochromic) ink or dyestuff printing of the suprabasil marking before covering with hologram.
3. according to the improved form of the file of claim 1, this improvement also comprises:
Described printed substrates made photochromic (photochromic) ink of all or part of usefulness of the marking or dyestuff printing in the substrate before covering with hologram.
4. according to the improved form of the file of claim 1, this improvement also comprises:
Described printed substrates made all or part of with fluorescent ink or dyestuff printing of the marking before covering with hologram.
5. according to the improved form of the file of claim 1, this improvement also comprises:
Described printed substrates made the part marking print with magnetic ink before covering with hologram.
6. according to the improved form of the file of claim 1, this improvement also comprises:
Described printed substrates made all or part of of the marking print with 1D or 2D bar code before covering with hologram.
7. according to the improved form of the file of claim 1, wherein said hologram comprises thermocolour ink or dyestuff in its component of polymer.
8. according to the improved form of the file of claim 1, wherein said hologram comprises photochromic ink or dyestuff in its component of polymer.
9. according to the improved form of the file of claim 1, wherein said hologram comprises fluorescent ink or dyestuff in its component of polymer.
10. according to the improved form of the file of claim 1, the holographic viscose glue plate of wherein said hologram is that the back side has anti-tampering (tamper-proof) glue.
11. according to the improved form of the file of claim 10, wherein said hologram comprises thermocolour ink or dyestuff in its component of polymer as described in claim 7.
12. according to the improved form of the file of claim 10, wherein said hologram comprises photochromic ink or dyestuff in its component of polymer as described in claim 8.
13. according to the improved form of the file of claim 10, wherein said hologram comprises fluorescent ink or dyestuff in its component of polymer as described in claim 9.
14. according to the improved form of the file of claim 10, wherein said hologram prints with magnetic ink.
15. according to the improved form of the file of claim 10, wherein said hologram is printed on 1D or 2D bar code on hologram as described in claim 6.
16. a method of making holographic bank draft or file may further comprise the steps:
Steps A: according to design and printing bank draft or file to file.
Step B: on printed text, coat polymeric material, then it is impressed with hologram or diffraction grating,
Step C: use such as polyacetals (polyacetate), the black coating of poly appearance or with the surface of Corona discharge Treatment hologram, make its upper surface can hold China ink.
Step D: by using pen, impact printer or computer-controlled laser inscription device are write and add data or signature on transparent holographic figure, thereby cover holographic picture.
17. according to the method for the holographic file of the making of claim 16, difference is that hologram or diffraction grating are the pasting boards that there is anti-tampering glue at the back side as described in claim 10.
18. according to the method for holographic bank draft of the making of claim 17 or file, difference is that hologram made by photosensitive polymer.
19. according to the method for holographic bank draft of the making of claim 10 or claim 16 or file, difference be step C after at step D, hologram covers to be gone up transparent lamina and scratches and change preventing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1255096P | 1996-02-29 | 1996-02-29 | |
| US60/012,550 | 1996-02-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1193299A true CN1193299A (en) | 1998-09-16 |
Family
ID=21755496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97190450A Pending CN1193299A (en) | 1996-02-29 | 1997-02-22 | Anti-fake document with transparent writable hologram |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1193299A (en) |
| AU (1) | AU2174897A (en) |
| WO (1) | WO1997034170A2 (en) |
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| CN1836010A (en) * | 2003-08-14 | 2006-09-20 | Jds尤尼弗思公司 | Flake for covert security applications |
| CN100386217C (en) * | 2003-01-02 | 2008-05-07 | 阿尔若威金斯安全公司 | Sheet with an anticpopying, reduced opacity area |
| CN100419159C (en) * | 1999-08-31 | 2008-09-17 | 德国捷德有限公司 | Safety element and a valuable object |
| CN100427323C (en) * | 2001-12-22 | 2008-10-22 | Ovd基尼格拉姆股份公司 | Diffractive safety element |
| CN102712207A (en) * | 2009-12-04 | 2012-10-03 | 德国捷德有限公司 | Security element, value document comprising such a security element and method for producing such a security element |
| CN102859450A (en) * | 2010-04-22 | 2013-01-02 | 尤尼卡技术股份有限公司 | Object produced by a molding process and marked by a diffraction grating, and method for the production thereof |
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| US9297941B2 (en) | 2011-07-21 | 2016-03-29 | Giesecke & Deverient Gmbh | Optically variable element, in particular security element |
| US9458324B2 (en) | 2002-09-13 | 2016-10-04 | Viava Solutions Inc. | Flakes with undulate borders and method of forming thereof |
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|---|---|---|---|---|
| GB9710818D0 (en) * | 1997-05-27 | 1997-07-23 | Applied Holographics | Optically variable devices |
| DE69819918T2 (en) * | 1998-12-14 | 2004-09-02 | The Procter & Gamble Co., Cincinnati | Holographic duplex film |
| US6506315B2 (en) | 1998-12-23 | 2003-01-14 | Illinois Tool Works, Inc. | Method of reproducing colored images on a heat transferable decorative, at least partially metallized and/or 2 D or 3 D holographic film |
| IT1303658B1 (en) | 1998-12-23 | 2001-02-21 | Veneta Decalcogomme S R L | PROCEDURE FOR THE REPRODUCTION OF IMAGES OR TEXTS ON HOLOGRAPHIC FILM-METALIZED IN ALL ITS VARIANTS AND GLOSSY COLORS, |
| GB2347646B (en) * | 1999-03-12 | 2001-01-31 | Rue De Int Ltd | Improvements in security elements |
| GB9906452D0 (en) * | 1999-03-19 | 1999-05-12 | Rue De Int Ltd | Security sheet and method |
| WO2002097538A1 (en) * | 2001-05-28 | 2002-12-05 | Section Of Science And Technology Development, Zhuzhou Institute Of Technology | A method of creating holographic image on printing surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4634148A (en) * | 1981-06-24 | 1987-01-06 | Greene Edwin B | Negotiable instrument |
| IT1248974B (en) * | 1990-06-22 | 1995-02-11 | Mantegazza A Arti Grafici | PARTICULARLY CHECK TYPE DOCUMENT WITH ANTI-COUNTERFEITING MEANS |
| US5267753A (en) * | 1991-07-08 | 1993-12-07 | Ernest Chock | Holographic bank draft |
| IL104520A0 (en) * | 1993-01-26 | 1993-05-13 | Be Eri Printers | Monetary instrument and method for verification thereof |
| US5636874A (en) * | 1994-04-05 | 1997-06-10 | Micro Format, Inc. | Temperature sensitive security document |
-
1997
- 1997-02-22 CN CN97190450A patent/CN1193299A/en active Pending
- 1997-02-22 WO PCT/IB1997/000395 patent/WO1997034170A2/en active Application Filing
- 1997-02-22 AU AU21748/97A patent/AU2174897A/en not_active Abandoned
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| US9297941B2 (en) | 2011-07-21 | 2016-03-29 | Giesecke & Deverient Gmbh | Optically variable element, in particular security element |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO1997034170A3 (en) | 1997-10-16 |
| WO1997034170A2 (en) | 1997-09-18 |
| AU2174897A (en) | 1997-10-01 |
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