CN1942789A - Authenticity judging medium, base material capable of judging authenticity, authenticity judging medium label, authenticity judging medium transfer sheet, sheet capable of judging authenticity, and in - Google Patents
Authenticity judging medium, base material capable of judging authenticity, authenticity judging medium label, authenticity judging medium transfer sheet, sheet capable of judging authenticity, and in Download PDFInfo
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- CN1942789A CN1942789A CN200580011360.0A CN200580011360A CN1942789A CN 1942789 A CN1942789 A CN 1942789A CN 200580011360 A CN200580011360 A CN 200580011360A CN 1942789 A CN1942789 A CN 1942789A
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Abstract
An authenticity judging medium which can eliminate difficulty in shortening a production time when a judging unit is formed by an emboss hologram and difficulty in changing a judging unit pattern due to many steps required for producing an emboss mold, and which comprises, laminated on a base material (12), a thin film layer (2) composed of a material having its light transmittance or reflectance changed by heating, an orientation film (4) interposed as required, and a color changing layer (3), for example, a selectively-light-reflecting layer consisting of a cholesteric liquid crystal layer, wherein recording is made on the thin film layer (2) by a thermal head or the like, and the hue change of the selectively-light-reflecting layer (3) at the recorded portion and the presence/absence of reflection and a hue when a circularly polarized plate is interposed are observed, thereby resolving the above problems.
Description
Technical field
The present invention relates to can with based on illegal intention, by the medium that is used to judge the true and false that the article that obtain are distinguished such as forging or distort.The invention still further relates to the base material of the decidable true and false that has adopted the medium that is used to judge the true and false.The invention still further relates to the above-mentioned medium that is used to judge the true and false is processed into label form or the transfer printing sheet form that is fit to when being applied to article.The invention still further relates to the sheet material or the authenticable information recording that have adopted the medium that is used to judge the true and false.
Background technology
If for example credit card, deposit card, various security or I.D. etc. are forged or distort and illegally use, can bring various troubles, therefore in order to prevent to forge or distort the loss that brings, people wish itself to have the function that can discern its authenticity.In addition, for example, senior commodity such as wrist-watch, leather and fur products, objects made from precious metals or jewelry jewelry, especially the music software, image software, Games Software or the computer software that are called as kinds of goods, audio-visual product, the electrical apparatus product of senior name brands or are recorded on the medium also are the objects of forging, equally, people wish to have the function that can discern authenticity.
In the past, in order to differentiate the authenticity that comprises above-mentioned various article, adopted hologram mostly.This is because therefore its precise structure of hologram has difficulty in the manufacturing.But the manufacture method of hologram has only the expert to understand, and is accurate product, is difficult to distinguish real hologram and forges hologram.
Therefore, the someone proposes the identification body as the substitute of hologram, and this identification body has base material, light is selected reflection horizon and detection unit; Wherein said light selects the reflection horizon to be formed on the face of base material, only reflects a kind of in left-hand polarization light in the incident light or the right-handed polarized light; Described detection unit is formed at light and selects wherein possess the determination information (for example with reference to patent documentation 1) of judging new product at least a portion in reflection horizon.
[patent documentation 1] TOHKEMY 2000-25373 communique (3-5 page or leaf, Fig. 1)
In the identification body of patent documentation 1, detection unit is still formed by embossed hologram, though detection unit can form accurate pattern, but in order fully to reproduce the concavo-convex of the hologram that is engraved on the molding die, must make molding die and moulding material fully long duration of contact, be difficult to shorten manufacturing time, and the manufacturing process of molding die itself also is that step is a lot, therefore has the shortcoming that is difficult to change the detection unit pattern.
Summary of the invention
Problem of the present invention is to provide a kind of medium that is used to judge the true and false, and this is used to judge that the medium of the true and false can eliminate the problem that is difficult to shorten manufacturing time when forming detection unit by embossed hologram; The problem of many, the pattern that is difficult to change detection unit of number of steps when molding die is made.
The problem of the invention described above can solve by following structure: form that a kind of light in left circularly polarized light in the metallic film etc. of pattern and the reflection incident light resemble the cholesteric or the right-circularly polarized light is selected reflective layer or other color change layer is laminated forms thereby will carry out fusion or evaporation by heating.Thereby finished the present invention based on this:
The problem of the invention described above is also solved by following structure: when overlapping dextrorotation rotatory polarization plate is observed and overlapping left-handed rotatory polarization plate when observing, make between the different cholesteric crystal of form and aspect laminate structures, perhaps the structure of combinations such as this laminate structures and hologram via the laminated gained of phase separation layer.Thereby finish the present invention based on this.
The problem of the invention described above is also solved in the following manner: for example will select reflexive layer to form pattern form by the light that has that cholesteric crystal constitutes, and form hologram etc. behind successively at it.Can realize the present invention based on this.
The 1st invention relates to the medium that is used for identification, it is characterized in that: this medium has two-layer light and selects the reflection horizon by being in this laminated laminate structures that forms of phase separation layer between two-layer, above-mentioned two-layer light selects the reflection horizon to select reflexive material to constitute by having one of them light of left circularly polarized light in the reflection incident light or right-circularly polarized light, and above-mentioned two-layer light selects the reflected light centre wavelength in reflection horizon different.
The 2nd invention relates to the medium that is used for identification of the 1st invention, and it is characterized in that: above-mentioned phase separation layer is a transparent base film.
The 3rd invention relates to the medium that is used to judge the true and false of the 1st invention, and it is characterized in that: above-mentioned phase separation layer is the lamilated body that contains transparent membrane and nematic liquid crystal layer.
The 4th invention relates in 1-the 3rd invention each the medium that is used to judge the true and false, it is characterized in that: laminated on the face of above-mentioned laminate structures have an optically diffractive structure layer.
The 5th invention relates to the medium that is used to judge the true and false of the 4th invention, and it is characterized in that: above-mentioned optically diffractive structure layer is a reflection hologram.
The 6th invention relates to the medium that is used to judge the true and false of the 4th or the 5th invention, and it is characterized in that: above-mentioned optically diffractive structure layer is attended by the light reflective layer.
The 7th invention relates to the media label that is used to judge the true and false, it is characterized in that: in 1-the 6th invention each be used for judge that the medium of the true and false is also laminated adhesive layer arranged.
The 8th invention relates to the medium transfer printing sheet that is used to judge the true and false, it is characterized in that: in 1-the 6th invention each be used to judge that the medium of the true and false and the peelable surface layer of rippability base material close.
The 9th invention relates to the sheet material of the decidable true and false, it is characterized in that: the medium that is used to judge the true and false that has in 1-the 6th invention each on the part of sheet material visually.
The 10th invention relates to the authenticable information recording of the decidable true and false, it is characterized in that: as the authenticable information recording of identification object surperficial laminated each the medium that is used to judge the true and false is arranged in 1-the 6th invention, perhaps on the part of above-mentioned authenticable information recording, have in 1-the 6th invention each the medium that is used to judge the true and false visually.
The 11st invention relates to the medium that is used to judge the true and false, it is characterized in that: this medium is laminated the forming of color change layer that makes thin layer that light transmission or reflectivity change and two-layer at least angle according to the observation give different colours by heating.
The 12nd invention relates to the medium that is used to judge the true and false of the 11st invention, it is characterized in that: above-mentioned color change layer is that one of them light of left circularly polarized light or right-circularly polarized light is selected reflective layer in the reflection incident light.
The 13rd invention relates to the medium that is used to judge the true and false of the 12nd invention, it is characterized in that: above-mentioned light selects reflective layer to contain cholesteric.
The 14th invention relates in 11-the 13rd invention each the medium that is used to judge the true and false, it is characterized in that: above-mentioned color change layer contain two-layer or two-layer more than.
The 15th invention relates in 11-the 13rd invention each the medium that is used to judge the true and false, and it is characterized in that: above-mentioned color change layer contains two-layer, above-mentionedly has phase separation layer between two-layer.
The 16th invention relates to the base material of the decidable true and false, it is characterized in that: the part of base material has in 11-the 15th invention each the medium that is used to judge the true and false visually.
The 17th invention relates to the media label that is used to judge the true and false, it is characterized in that: this label be in 11-the 15th invention each be used to judge further laminated adhesive layer on the medium of the true and false.
The 18th the invention relate to the medium transfer printing sheet that is used to judge the true and false, it is characterized in that: the 11st to the 15th the invention in each be used to judge that the medium of the true and false and the rippability surface layer of fissility base material close.
The 19th invention relates to the medium that is used to judge the true and false, it is characterized in that: this medium is that each closes layer by layer and forms by light is selected reflection graphic patterns layer and optically diffractive structure layer, and wherein said light selects the reflection graphic patterns layer to contain to have one of them light of left circularly polarized light in the reflection incident light or right-circularly polarized light to select the layer of reflexive material.
The 20th invention relates to the medium that is used to judge the true and false of the 19th invention, it is characterized in that: select the reflection graphic patterns layer at the laminated above-mentioned light of the one side of transparent base, at the laminated above-mentioned optically diffractive structure layer of the another side of above-mentioned transparent base.
The 21st invention relates to the medium that is used to judge the true and false of the 19th invention, it is characterized in that: the laminated successively above-mentioned light of the one side of transparent base is selected reflection graphic patterns layer and above-mentioned optically diffractive structure layer.
The 22nd invention relates in 19-the 21st invention each the medium that is used to judge the true and false, and it is characterized in that: above-mentioned optically diffractive structure layer is a reflection hologram.
The 23rd invention relates in 19-the 22nd invention each the medium that is used to judge the true and false, and it is characterized in that: above-mentioned optically diffractive structure layer is attended by the light reflective layer.
The 24th invention relates to the media label that is used to judge the true and false, it is characterized in that: this label be in 19-the 23rd invention each be used to judge further laminated adhesive layer on the medium of the true and false.
The 25th invention relates to the medium transfer printing sheet that is used to judge the true and false, it is characterized in that: in 19-the 23rd invention each be used to judge that the medium of the true and false and the rippability surface layer of fissility base material close.
The 26th invention relates to the sheet material of the decidable true and false, it is characterized in that: the part of this sheet material has in 19-the 23rd invention each the medium that is used to judge the true and false visually.
The 27th invention relates to the authenticable information recording of the decidable true and false, it is characterized in that: as the authenticable information recording of identification object surperficial laminated each the medium that is used to judge the true and false is arranged in above-mentioned 19-the 23rd invention, perhaps in the part of above-mentioned authenticable information recording, have in above-mentioned 19-the 23rd invention each the medium that is used to judge the true and false visually.
The 1st invention can be provided for judging the medium of the true and false, this medium has by the different light of two-layer reflection wavelength selects the reflection horizon to close the laminate structures that forms layer by layer via what produce phase differential, by irradiation right-circularly polarized light or left circularly polarized light, the different light of two-layer reflection wavelength is selected the reflection horizon, and different color reflections takes place in one of them, therefore can confirm its authenticity by two methods, and be transparent,, can have an X-rayed lower floor even overlap on other article.
The 2nd invention can be provided for judging the medium of the true and false, and this medium is except that the effect of the 1st invention, and the layer that produces phase differential is a transparent base film, and respectively laminated light selects the reflection horizon to use in the table of transparent base film easily.
The 3rd invention can be provided for judging the medium of the true and false, and this medium is except that the effect of the 1st invention, and the layer that produces phase differential is the lamilated body of laminated nematic liquid crystal layer on the transparent base film, and respectively laminated light selects the reflection horizon to use in the table of this lamilated body easily.
The 4th invention can be provided for judging the medium of the true and false, this medium is in 1-the 3rd invention each the invention effect, lower floor is laminated the optically diffractive structure layer, and the visuality of optically diffractive structure, for example hologram or diffraction grating that the optically diffractive structure layer had is reduced.
The 5th invention can be provided for judging the medium of the true and false, and this medium has the excellent appearance that hologram has except that the effect of the 1st invention.
The 6th invention can be provided for judging the medium of the true and false, and this medium is except that the effect of the 5th invention, because hologram is attended by reflective layer, the visuality of hologram is further enhanced.
The 7th invention can be provided for judging the media label of the true and false, and this media label utilizes adhesive layer, can bring into play each invention effect in 1-the 6th invention, be used to judge that the medium of the true and false easily is applied in the middle of the article.
The 8th invention can be provided for judging the medium transfer printing sheet of the true and false, this make can bring into play each invention effect in 1-the 6th invention, be used to judge that the medium of the true and false forms transferable formation, therefore can easily be applied in the article.
The 9th invention can provide the sheet material of the decidable true and false, and therefore the medium that is used to judge the true and false that it has adopted in 1-the 6th invention each can carry out the identification of additional information.
The medium that is used to judge the true and false that the 10th invention can provide the authenticable information recording of the decidable true and false, this authenticable information recording to adopt in 1-the 6th invention each, so it can carry out the identification of self.
The 11st invention can be provided for judging the medium of the true and false, this medium is forming on the position of pattern based on optical transmission rate variance or reflection differences on the thin layer, owing to have color change layer, and therefore, because of the different visible form and aspect differences of viewing angle, can carry out identification thus.
The 12nd invention can be provided for judging the medium of the true and false, this medium is except that the effect of the 11st invention, on the position of the pattern that forms based on optical transmission rate variance or reflection differences on the thin layer, because light is selected the existence of reflective layer, because of the viewing angle difference, its form and aspect are also different; And, can confirm catoptrical having or not or catoptrical form and aspect by left-handed rotatory polarization plate or one of them observation of dextrorotation rotatory polarization plate, can carry out identification thus.
The 13rd invention can be provided for judging the medium of the true and false, this medium is except that the effect of the 12nd invention, select the reflection horizon by using cholesteric as light, the different form and aspect of viewing angle are also different, and by left-handed rotatory polarization plate or dextrorotation rotatory polarization plate when one of them is observed, can confirm catoptrical having or not, thus can be certain carry out identification.
The 14th invention can be provided for judging the medium of the true and false, and this medium removes in 11-the 13rd invention each the invention effect, by make color change layer be two-layer or two-layer more than, the angle difference can produce complicated form and aspect variation according to the observation.
The 15th invention can be provided for judging the medium of the true and false, this medium is in 11-the 13rd invention each the invention effect, color change layer has the phase separation layer that exists between two-layer and two-layer, therefore can produce more complicated reflection, can further carry out identification exactly.
Therefore the medium that is used to judge the true and false that the 16th invention can provide the base material of the decidable true and false, this base material to adopt in 11-the 15th invention each can carry out the identification of additional information.
The 17th invention can be provided for judging the media label of the true and false, and this label can easily be applied in the article by medium upper strata rubber alloy adhesive layer effect, that be used to judge the true and false of each invention in can bringing into play 1-the 15th invention.
The 18th invention can be provided for judging the transfer printing sheet of the true and false, this transfer printing sheet by can bring into play each invention effect in 11-the 15th invention, be used to judge that the dielectric layer of the true and false is combined in the fissility base material, can easily be applied in the article.
The 19th invention can be provided for judging the medium of the true and false, this medium has the optically diffractive structure layer, this optically diffractive structure layer possesses the specificity outward appearance that produces by optical diffraction, in addition also have light and select the reflection graphic patterns layer, it is sub-image in the normal state that this light is selected the reflection graphic patterns layer, by left circularly polarized light or right-hand circular polarization rayed and visual, therefore the outward appearance under common state, can't judge in the normal state, but can carry out identification by irradiation left circularly polarized light or right-circularly polarized light, light selects the formation of reflection graphic patterns for example can easily carry out by printing etc., therefore can not increase the manufacturing process number, and pattern is change easily also.
The 20th invention can be provided for judging the medium of the true and false, and this medium is except that the effect of the 19th invention, and it is laminated that light selection reflection graphic patterns layer and optically diffractive structure layer clip base material, can reduce interacting of being produced when forming respectively when therefore making.
The 21st invention can be provided for judging the medium of the true and false, and this medium only at laminated each layer of the one side of base material, therefore can utilize the base material that exposes as protective seam except that the effect of the 19th invention.
The 22nd invention can be provided for judging the medium of the true and false, this medium remove 19-the 21st invent in each the invention effect, the optically diffractive structure layer is made of hologram, so the hologram image visual.
The 23rd invention can be provided for judging the medium of the true and false, this medium remove 19-the 22nd invent in each the invention effect, the optically diffractive structure layer is also with the light reflective layer, so the visuality of the outward appearance that had of optically diffractive structure layer is improved.
The 24th invention can be provided for judging the media label of the true and false, and this media label is to utilize adhesive layer, make the invention effect that can bring into play in 19-the 23rd invention each, be used for judging that the medium of the true and false easily is applied to article.
The 25th invention can be provided for judging the medium transfer printing sheet of the true and false, this transfer printing sheet be can bring into play in 19-the 23rd invention each the invention effect, be used to judge that the medium of the true and false forms transferable structure, therefore can easily be applied in the article.
The 26th invention can provide the sheet material of the decidable true and false, this sheet material to adopt in 19-the 23rd invention each the medium that is used to judge the true and false, therefore can carry out identification to additional information.
Therefore the medium that is used to judge the true and false that the 27th invention can provide the authenticable information recording of the decidable true and false, this authenticable information recording to adopt in 19-the 23rd invention each can carry out self identification.
The accompanying drawing summary
Fig. 1 is the basic laminate structures figure that expression the present invention is used to judge the medium of the true and false.
Fig. 2 is another laminate structures figure that expression the present invention is used to judge the medium of the true and false.
Fig. 3 is the example application that expression the present invention is used to judge the medium of the true and false.
Fig. 4 is other example application that expression the present invention is used to judge the medium of the true and false.
Fig. 5 is that expression uses the present invention to be used to judge that the medium of the true and false carries out the figure of the method for identification.
Fig. 6 is that expression is used to judge that with the present invention the medium of the true and false makes the figure of label-like.
Fig. 7 is that expression is used to judge that with the present invention the medium of the true and false makes the figure of transfer printing sheet.
Fig. 8 be expression the present invention another be used to judge the most basic laminate structures figure of the medium of the true and false.
Fig. 9 be expression the present invention another be used to judge the laminate structures figure of an embodiment of the medium of the true and false.
Figure 10 is the laminate structures figure of medium that is used to judge the true and false of expression another embodiment of the present invention.
Figure 11 is that expression is fit to that another is used to judge that the media applications of the true and false is in the label of various article and the figure of transfer printing sheet with the present invention.
Figure 12 be expression the present invention another be used to judge the example application of the medium of the true and false.
Figure 13 be expression the present invention another be used to judge the figure of laminate structures example of the medium of the true and false.
Figure 14 is that expression uses that the present invention is another to be used to judge that the medium of the true and false carries out the method for identification.
Figure 15 is that expression is fit to be used to judge that the media applications of the true and false is in the label of various article and the figure of transfer printing sheet with the present invention is another.
Figure 16 is the another application examples subgraph that is used to judge the medium of the true and false of expression the present invention.
Concrete enforcement formula
Fig. 1 and Fig. 2 are the figure that enumerates the laminate structures of the medium that is used to judge the true and false of the present invention.Fig. 3 and Fig. 4 are the figure that uses the example of the medium that is used to judge the true and false of the present invention.To be expression of the present inventionly be used to judge that the goods of the medium of the true and false carry out the mode figure of identification by adopting to Fig. 5.Fig. 6 is that expression is fit to be used to judge that with of the present invention the media applications of the true and false is in the form figure of the label of object.Fig. 7 is that expression is fit to be used to judge that with of the present invention the media applications of the true and false is in the form figure of the transfer printing sheet of object.
Shown in Fig. 1 (a), the present invention be used to judge the medium 1 of the true and false the most basic be to contain following laminate structures: the laminated thin layer 2 that optical transmission rate or reflectivity is changed by heating on the color change layer 3 that produces different colours because of viewing angle is different.If observe from the upside of accompanying drawing, be used to then judge that the medium 1 of the true and false can be to contain following laminate structures also: laminated color change layer 3 on thin layer 2 shown in Fig. 1 (b).
Color change layer 3 can use various materials to constitute, and for example can constitute by using pigment, use evaporated film or use bitintability dyestuff because of viewing angle difference color changes.Because of the pigment that viewing angle difference color changes can be enumerated: the mica of layer such as the monox of high index of refraction, titanium dioxide, iron oxide and low-refraction etc. closes the pearlescent pigment that forms layer by layer, specifically the trade name that can make available from (strain) Shiseido: the trade name that イ Application Off イ ニ Star ト カ ラ one, メ Le Network company (Germany) make: イ リ オ ジ Application etc.Evaporated film is by vapor phase method metal such as aluminium or other material to be formed form of film, and object as thin as a wafer has the transparency, and as the oil supernatant on water film, shows the so-called interference color that change because of viewing angle difference color.The bitintability dyestuff contains because of molecular axis makes the different long-chain dye molecule of light absorption to difference, for example have following character: for respect to the molecular axis of dye molecule to almost not having absorbability for the light component of normal direction, transmitted light, and for respect to molecular axis to having absorbability for the light component of parallel direction, transmitted light not; Object lesson has the dyestuff of anthraquinone system, azo system or bisdiazo system.Wherein, the pigment or the bitintability dyestuff that change because of viewing angle difference color disperse can be scattered in the suitable adhesive resin, use solvent dilution, make the composition that is used to be coated with, it is applied to object surface by serigraphy, intaglio printing or known rubbing method.
The color change layer 3 that is configured for judging the medium 1 of the true and false can be that one of them light of left circularly polarized light or right-circularly polarized light is selected reflective layer in the reflection incident light, in this case, be used to judge that the medium 1 of the true and false can be shown in Fig. 1 (c), contain the laminate structures that has alignment films 4 between color change layer 3 and the thin layer 2, can also be to contain the laminate structures of selecting reflective layer 3, alignment films 4 and thin layer 2 from the laminated successively light of downside, but this structure be not shown.
Be used to judge that the medium 1 of the true and false is not limited only to thin layer 2 and the laminated laminate structures of color change layer 3 each one deck, yet being to contain two-layer color change layer 3.Shown in Fig. 1 (d), can be to contain by the laminated successively two-layer color change layer 3B of a following side, the 3A of accompanying drawing and the laminate structures of thin layer 2, shown in Fig. 1 (e), can also be to contain by the following side of the accompanying drawing laminate structures of laminate film layer 2, two-layer color change layer 3A and 3B successively.
Shown in Fig. 2 (a), the medium 1 that is used to judge the true and false can have by the laminated successively color change layer of downside for example light select for example laminate structures of 3A of reflective layer 3B, phase separation layer 5 and color change layer.Light selects reflective layer 3B and 3A preferably to contain cholesteric, is more preferably the layer of the circularly polarized light of the mutual equidirectional of reflection.In example shown in Fig. 2 (a), select all right laminate film layer 2 of reflective layer A (symbol 3A) side at light, be configured for judging the medium 1 of the true and false, certainly, select all right laminate film layer 2 of reflective layer B (symbol 3B) side at light, be configured for judging the medium 1 of the true and false.
Here, phase separation layer 5 is the light of birefringence incident, produces out of phase according to direction of polarized light, makes it have the layer of phase differential.Birefringence be since the refractive index of medium according to direction of polarized light and inhomogeneous, and the phenomenon that takes place thus, the known phase differential σ that sees through the light of above-mentioned medium is σ=2 π (ne-no) d/ λ.Here, ne is the extraordinary light refractive index, and no is the ordinary ray refractive index, and d is the thickness of medium, and λ is a light wavelength.That is, with respect to certain thickness d medium, phase differential σ is relevant with light wavelength λ.To the right-circularly polarized light of phase separation layer 5 incident wavelength λ=2 (ne-no) d, then this right-circularly polarized light of transmission produces phase differential σ=π (i.e. 1/2 wavelength).Therefore, the right-circularly polarized light of incident is transformed into left circularly polarized light and penetrates, and the left circularly polarized light of incident is transformed into right-circularly polarized light and penetrates.Above-mentioned phase separation layer 5 is except constituting the transparent base film with the oriented film of plastics, as described later, and also can be with nematic liquid crystal layer or nematic liquid crystal layer and transparent base film formation.
Contain two-layer color change layer B and A (symbol 3B and 3A) in the color change layer 3 via the phase separation layer 5 laminated laminate structures that form, when color change layer 3B and 3A are extremely thin, integral body is transparent, therefore also can have an X-rayed the object of an opposite side by this lamilated body.
Can be arranged to two-layer color change layer and contain light selection reflective layer B and A (symbol 3B and 3A), they all can reflect right-circularly polarized light.Shown in Fig. 2 (b), at above-mentioned fundamental, natural light is selected reflective layer A (symbol 3A) side incident by light, because natural light comprises right-circularly polarized light and left circularly polarized light, select the effect of reflective layer A (symbol 3A) by light, only optionally reflect right-circularly polarized light, then this reflected light (right-circularly polarized light) can be observed via dextrorotation rotatory polarization plate.
In addition, select reflective layer A (symbol 3A) by the Left-hand circular polarization light transmission light in the natural light of light selection reflective layer A (symbol 3A) side incident.The left circularly polarized light of transmission is transformed into right-circularly polarized light (" left side → right side " expression among the figure is transformed into right-circularly polarized light by left circularly polarized light) via phase separation layer 5.The right-circularly polarized light of conversion is selected reflective layer B (symbol 3B) reflection by light.This reflected light (right-circularly polarized light) sees through phase separation layer 2 once more, is transformed into left circularly polarized light (" right side → left side " expression among the figure is transformed into left circularly polarized light by right-circularly polarized light).The left circularly polarized light of conversion selects reflective layer A (symbol 3A) to penetrate through light, can observe this ejaculation light (left circularly polarized light) via left-handed rotatory polarization plate.At this moment, different by selecting reflective layer A and B (symbol 3A and 3B) to make each catoptrical centre wavelength two-layer light, when using dextrorotation rotatory polarization plate to observe and when using left-handed rotatory polarization plate observation, the color difference of light, therefore double acknowledge can be carried out, identification can be carried out more accurately.
The present invention is used to judge that the medium of the true and false is preferably laminated with suitable base material, as the base material use of the decidable true and false.
Shown in Fig. 3 (a), on suitable base material 12, by the laminated successively color change layer of base material 12 1 sides for example light select reflective layer 3 and thin layer; Shown in Fig. 3 (b), on suitable base material 12, by base material 12 1 sides laminate film layer 2 successively and color change layer for example light select reflective layer 3; Perhaps shown in Fig. 3 (c), on suitable base material 12, by base material 12 1 sides laminate film layer 2 successively, alignment films 4 and color change layer for example light select reflective layer 3 etc.; They are the base material 11 of the decidable true and false.The base material 11 of these decidable true and falses is to judge that with quoting being used to that Fig. 1 (a)-Fig. 1 (c) illustrates the medium 1 of the true and false is laminated in gained on the base material 12.In addition, on suitable base material 12, by the laminated successively color change layer of base material 12 1 sides for example light to select reflective layer 3, alignment films 4 and thin layer 2 gained also be the base material 11 of the decidable true and false, but this structure diagram not.Except that above-mentioned, being used to of will quoting that Fig. 1 (d) and Fig. 1 (e) illustrate judges that the medium 1 of the true and false is laminated in that gained also is the base material 11 of the decidable true and false on the base material 12.
The example of the base material 11 of the decidable true and false shown in Fig. 4 (a) has judges that with quoting being used to that Fig. 2 (a) illustrates the medium 1 of the true and false is laminated in the laminate structures that obtains on the suitable base material 12, be on base material 12 by the laminated successively color change layer of base material 12 1 sides for example light select reflective layer 3 and thin layer 2, light is selected reflective layer 3 to contain by the laminated successively light of base material 12 1 sides to select reflective layer B (symbol 3B), phase separation layer 5 and light to select the laminate structures of reflective layer A (symbol 3A) gained.Selecting reflective layer A (symbol 3A), phase separation layer 5 and light to select reflective layer B (symbol 3B) gained by base material 12 1 sides laminate film layer 2 successively, light on base material 12 also is the base material 11 of the decidable true and false of the present invention, but this structure does not illustrate.
Shown in Fig. 4 (b), the base material 11 of the decidable true and false can contain on base material 12 by the laminated successively color change layer of base material 12 1 sides for example light select reflective layer B (symbol 3B), pattern form color change layer for example light select the laminate structures of reflective layer A (symbol 3A) and thin layer 2.It is that laminated Fig. 1 of quoting (d) illustrates on base material 12 is used to judge the variation structure of medium 1 gained of the true and false.As mentioned above, color change layer 3 contains two-layer or two-layer when above, and one deck can be a pattern form at least.In addition, the base material 11 of the decidable true and false can also contain by the color change layer of base material 12 1 sides laminate film layer 2, pattern form successively for example light select reflective layer A (symbol 3A) and light to select the laminate structures of reflective layer B (symbol 3B).In the above situation, the light of pattern form selects reflective layer A (symbol 3A) and light to select the laminated order of reflective layer B (symbol 3B) all can substitute.
The present invention is used for judging that the thin layer 2 of the medium 1 of the true and false preferably changes by heating its light transmission or reflectivity, described material is so long as can fusion or evaporation or undergoing phase transition by heating, at heating part with not in the heating part, the material that produces pattern because of the difference of optical transmission rate or reflectivity gets final product, it can be any material, for example can be: more low-melting metals such as Te, Sn, In, Al, Bi, Pb or Zn, the alloy of these metals or the compound of these metals be Te-carbonide etc. for example.The formation method of thin layer 2 is according to material and difference can be undertaken by vacuum vapour deposition, sputtering method or electrochemical plating etc.The thickness of thin layer 2 is about 10 μ m-1000 μ m.
The medium 1 that is used for judging the true and false of the present invention, light select reflective layer 3 be by have that one of them light of left circularly polarized light in the reflection incident light or right-circularly polarized light selects that reflexive material forms layer, for example contain the layer of cholesteric.Light is selected reflective layer 3 for example the solvent solution of cholesteric crystal can be printed by various print processes and its drying is formed, perhaps use the polymerism cholesteric crystal this moment, be prepared into the polymerizable ultraviolet composition, gained polymerizable ultraviolet composition is used and drying by various print processes, and irradiation ultraviolet radiation forms its polymerization then.
Form two-layerly or two-layer when selecting reflective layer 3 with glazing, preferably the reflected light centre wavelength difference of each layer for this reason, preferably makes each layer thickness difference, perhaps uses the different material of pitch (spiral ピ Star チ) as the material that constitutes each layer.Above-mentioned use polymerism cholesteric crystal prepares the polymerizable ultraviolet composition and forms light when selecting the reflection horizon, polymerism nematic liquid crystal and chiral reagent can be used in combination, at this moment, by the different ultraviolet composition of match ratio of preparation and use polymerism nematic liquid crystal and chiral reagent (カ イ ラ Le drug), can form pitch different cholesteric mutually.
The cholesteric liquid crystal material of polymerism can be enumerated compound shown in compound shown in the following general formula (1) or formula (the 2)-Shi (10).These compounds of enumerating can be monomers, also can be oligomer or polymkeric substance.Compound and usefulness shown in two or more general formula (1) also can be selected from compound shown in compound shown in above-mentioned (1) and formula (the 2)-Shi (10), two or more is also used.
In the above-mentioned general formula (1), R
1And R
2Represent hydrogen or methyl respectively, X is preferably chlorine or methyl.The a of the alkylidene chain length of the interval group of compound and b shown in the expression general formula (1) can consider it is preferred from aspect the expression liquid crystal liquid crystal property in the scope of 2-9.
In the above-mentioned formula (11), R
3Expression hydrogen or methyl.In above-mentioned (11) and the formula (12), Y is any one among following formula (14) and (15) formula shown (the i)-Shi (xxiv).Among following formula (11)-Shi (13), c, the d of expression alkylidene chain length and e consider it is preferred in the scope of 2-9 from aspect the expression liquid crystal liquid crystal property.
Change 1
Change 4
Change 6
Change 7
Change 8
Change 9
Change 10
Change 14
Change 15
Above-mentioned cholesteric liquid crystal material and chiral reagent can be as required be mixed together with ultraviolet polymerization initiator and solvent or thinning agent, one of them example is with cholesteric liquid crystal material: chiral reagent: the proportioning of ultraviolet polymerization initiator=100: 5: 5 (quality criteria) is mixed, the powder that mixing can be obtained uses the dissolving of toluene equal solvent, makes the solution that is used to be coated with of 30 quality % left and right sides concentration.Proportioning can suitably be determined according to kind, coating method or coating machine or the conceivable coating weight of use cholesteric liquid crystal material, chiral reagent or ultraviolet polymerization initiator etc.
Can select the laminated alignment films 4 of reflective layer 3 with light so long as polyvinyl alcohol resin (PVA), polyimide resin etc. can be used as the material that alignment films uses usually gets final product, can constitute by any material.Alignment films 4 can followingly form: usually by suitable rubbing method, be coated on the solvent solution of these resins on the film or on the suitable layer, make its drying, use frictions such as cloth, brush then, carry out friction orientation and form.When films etc. were made of the stretched plastic sheet, its surface had had orientation, therefore can omit the laminated of alignment films 4.
The present invention be used to judge the true and false medium 1 laminated object---base material 12 can be with paper, plastics or metal forming etc. or their compound etc. as material.Also base material 12 utmost points can be processed into practically forms such as periodical ticket by forging or distort described card classes such as the credit card that may produce various troubles or deposit card, various security, communication or I.D..On above-mentioned material, print, processing such as laminated or mold pressing, can also laminated magnetic recording layer or build-in IC chip.Nearly all occasion all can be printed at base material 12, mostly can laminated magnetic recording layer.
But the present invention be used to judge the record that carries out on the medium 1 of the true and false be to use thermal head or laser etc., preferably according to the method for input information point-like heating, form required literal or pattern etc. for the thin layer 2 that optical transmission rate or reflectivity are changed.Fig. 5 (a) is expression forms recording portion 13 to the base material 11 of the decidable true and false a state, the base material 11 of the wherein said decidable true and false is to be used to judge that the medium 1 of the true and false is laminated in the whole surperficial gained of base material, in the illustrated example, recording portion 13 has formed English alphabet " DD ".Fig. 3 quoted by the base material 11 of the decidable true and false or Fig. 4 describes, be assumed to quote the laminate structures that Fig. 3 (a) illustrates, and can certainly be laminate structures in addition.When quoting the laminate structures that Fig. 3 (a) illustrates, volatilization is removed and is become the narrow banded that thin layer 2 constitutes English alphabet " DD ", then by removing the light selection reflective layer 3 that part can be seen lower floor, when light selects reflective layer 3 to contain cholesteric, because of the viewing angle difference, form and aspect are also different.Therefore, angle is different and have different form and aspect according to the observation for English alphabet " DD ".
The present invention is used to judge that the medium 1 of the true and false can use ink-jet printer or thermal transfer printer etc., implement record by non-thermal photography method, the record of implementing by above-mentioned non-thermal photography method is to make thin layer that light transmission or reflectivity change or/and because of the different color change layer with different colours of viewing angle are background, can have anti-counterfeiting thus by heating.Except that writing down by above-mentioned non-thermal photography method, also be used in combination by the thermal photography method of thermal head or laser etc. and carry out record, can be used in the medium 1 of judging the true and false thus and have higher antifalsification.
On the base material 11 of the decidable true and false under Fig. 5 (a) state, shown in Fig. 5 (b), overlapping left-handed rotatory polarization plate 14L, suppose the left circularly polarized light that light selects reflective layer 3 to reflect in the incident lights, then can observe reflected light, select the thickness or the pitch of reflective layer 3 in addition according to light, can see that reflected light is painted.At this moment, shown in Fig. 5 (c), overlapping dextrorotation rotatory polarization plate 14R then can not observe reflected light.
The base material 11 of the decidable true and false shown in Fig. 5 (a) is a base material of quoting the decidable true and false that Fig. 4 (a) illustrates, when light selective reflecting layer A (symbol 3A) and light selective reflecting layer B (symbol 3B) reflection right-hand circular polarization light time, shown in Fig. 5 (b), overlapping left-handed rotatory polarization plate 14L, then as seen select the reflected light of reflective layer B (symbol 3B) reflection by the light of lower floor's one side, shown in Fig. 5 (c), overlapping dextrorotation rotatory polarization plate 14R, then as seen select the reflected light of reflective layer A (symbol 3A) reflection by the light of upper strata one side, in above-mentioned two kinds of situations, according to thickness or the pitch of light selection reflective layer A (symbol 3A) or B (symbol 3B), all visible reflected light is painted.As previously mentioned, in this case, when using left-handed rotatory polarization plate 14L to observe and when using dextrorotation rotatory polarization plate 14R observation, therefore the color difference of light can carry out double acknowledge, judges the true and false more accurately.
In the above example, be the medium 1 that is used to judge the true and false of the present invention is laminated in the surface of base material 12 and is that a side of observing is the explanation that carry out on the basis, if base material 12 is transparent, also can judge that the medium 1 of the true and false is laminated in non-observation one side of base material 12 with being used to.As an example that is used to judge the medium 1 of the true and false of the present invention, be used to judge that with of the present invention the medium 1 of the true and false is cut into lengthwise wire extremely narrow about 0.5mm-5mm, the depressed part of itself and base material 12 is laminated, can be embedded to paper etc. with having an X-rayed base material is inner and use.For example, with the paper of security class as base material 12, if adopt the medium 1 that is used to judge the true and false of wire, then unshowy in appearance or seem just to decorate but in fact with the true and false of above-mentioned decidable similarly with paper.
The medium 1 that is used to judge the true and false of the present invention of quoting that Fig. 1 and Fig. 2 describe by being processed into the form of label or transfer printing sheet, can easily be used for being suitable for the various article of the medium 1 of judging the true and false as quoting Fig. 6 or Fig. 7 describes.
Fig. 6 relates to label form; in the illustrated embodiment; a side above in the accompanying drawing of base film 22; by the laminated successively color change layer of base film 22 1 sides for example light select reflective layer B (symbol 3B), phase separation layer 5, color change layer for example light select reflective layer A (symbol 3A), thin layer 2 and protective seam 24; the laminated adhesive layer 23 of a side below base film 2 is configured for judging the media label 21 of the true and false.Also can be as required, at the laminated detachment sheet material of the one side of exposing adhesive layer 23.In the example shown in Figure 6; be to quote in the example that Fig. 2 (a) illustrates to be used to judge that the medium 1 of the true and false is laminated in base material 22; the laminated protective seam 24 of the superiors; the laminated adhesive layer 23 of a following side of base material 22; as the medium 1 that is used to judge the true and false, the material beyond the example that also can laminated Fig. 2 of quoting (a) illustrates.Can also omit protective seam 24.Also can be below base film 22 the laminated medium 1 that is used to judge the true and false of a side; the laminated adhesive layer 23 of a side below again; below base film 22, when laminated medium 1 that is used to judge the true and false of a side and adhesive layer 23, protective seam 24 can also be laminated in a top side of base film 22.
Fig. 7 relates to the form of transfer printing sheet; in illustrated embodiment; a side below base film 22; by the laminated successively protective seam 24 of base film 22 1 sides, thin layer 2, color change layer for example light select reflective layer 3 and adhesive layer 23; between base film 22 and protective seam 24, form strippable laminated; therefore light selects reflective layer 3 to have the laminate structures of being selected reflective layer A (symbol 3A), phase separation layer 5 and light selection reflective layer B (symbol 3B) gained by the laminated successively light of thin layer 2 one sides, is configured for judging the medium transfer printing sheet 31 of the true and false.Be used for judging the example of the medium transfer printing sheet 31 of the true and false at this, laminated quoting in the example that Fig. 2 (a) illustrates is used to judge the medium 1 of the true and false, but the medium 1 that is used to judge the true and false also can be the medium of quoting beyond the example that Fig. 2 (a) illustrates.Can also omit protective seam 24.When there was tackifier on the transfer printing body surface, undermost adhesive layer 23 can omit.
In the form of the above-mentioned media label 21 that is used for judging the true and false or be used to judge the form of the medium transfer printing sheet 31 of the true and false, can use the base material 11 of the decidable true and false to replace being used to judging the various laminate structures of the medium 1 of the true and false.In this case, the base material 11 of the decidable true and false itself is attended by base material 12, the medium transfer printing sheet 31 that therefore is used to judge the media label 21 of the true and false and is used to judge the true and false have base film 22 and base material 12 both.
The base material 11 of the medium 1 that is used to judge the true and false of the present invention or the decidable true and false can prepare by laminated successively each layer on suitable permanent base material or interim base material, also can use the form of the above-mentioned media label 21 that is used to judge the true and false or be used to judge the form manufacturing of the medium transfer printing sheet 31 of the true and false.The form of media label 21 that is used to judge the true and false is laminated when the detachment sheet is arranged, peelable detachment sheet, adhesive layer 23 is fitted with bonded article to be used, in addition, the form that is used to judge the medium transfer printing sheet 31 of the true and false can be peeled off base film 22 and use then by adhesive layer 23 1 sides and bonded article one side are bonding.
The solvent resistance and the thermotolerance of the processing when constituting the above-mentioned base film 22 that is used to judge the media label 21 of the true and false and is used to judge the medium transfer printing sheet 31 of the true and false and preferably having physical strength, the label of anti-manufacturing the 21 and transfer printing sheet 31.Its material does not limit the plastics of preferred film shape or sheet according to application target and difference.Various plastic sheetings such as polyethylene terephthalate (PET), polycarbonate, polyvinyl alcohol (PVA), polysulfones, tygon, polypropylene, polystyrene, polyarylate, tri acetyl cellulose (TAC), diacetyl cellulose, polyethylene/vinyl base alcohol for example.
Constitute the above-mentioned media label 21 that is used to judge the true and false and above-mentionedly be used to judge that the adhesive layer 23 of the medium transfer printing sheet 31 of the true and false can use heat snensitive adhesives or pressure-sensitive adhesive all can.
Constitute and above-mentionedly be used for judging the media label 21 of the true and false and be used to judge that the protective seam 24 of the medium transfer printing sheet 31 of the true and false removes common printing ink or the thermoplastic resin or heat-curing resin of coating as the adhesive resin use, can also use ionizing ray curable resins such as uv curing resin or electron ray curing resin.
[embodiment 1]
Using polymerism cholesteric crystal solution, is that the PET film surface of 50 μ m carries out intaglio printing at thickness, makes its drying, irradiation ultraviolet radiation then, and forming thickness on whole surface is the cholesteric of 2.2 μ m.Here employed polymerism cholesteric crystal solution is 20% solution (solvent is a toluene) that polymerism nematic liquid crystal (BASF (strain) makes, trade name: " パ リ オ カ ラ one LC242 "), chiral reagent (BASF (strain) makes, trade name: " パ リ オ カ ラ one LC756 ") and ultraviolet polymerization initiator is mixed gained, the proportioning of polymerism nematic liquid crystal/chiral reagent is 95.5/4.5, and ultraviolet polymerization initiator mixes 5% with respect to the polymerism nematic liquid crystal.
On formed cholesteric, form the tackifier coating of vibrin system by intaglio printing; on tackifier coating, form the Sn thin layer that thickness is 250nm by evaporation; by intaglio printing, forming urethane resin on the Sn thin layer is protective seam, obtains the thermal photography film again.
Carry out lettering by the gained thermal photography with protective seam one side of film with thermal head, the thermal photography behind the lettering changes with film angle difference according to the observation, the form and aspect of the cholesteric of its lettering part.Overlapping dextrorotation rotatory polarization plate is observed, and then lettering partly is colored as green, changes left-handed rotatory polarization plate into, and then color disappears.
[embodiment 2]
The thermal photography of gained does not form overlapping processing release paper on the face of a side of pattern with the PET film of film in embodiment 1; be coated with tackifier on it; laminated successively protective seam, Sn thin layer, tackifier coating, cholesteric, PET film, adhesive layer and processing release paper; form laminate structures; carve then and be pressed into the regulation shape, obtain label-like thermal photography film.
[embodiment 3]
Will be in embodiment 1 the gained thermal photography with the laminated heat snensitive adhesives layer of tow sides of film, be processed into the wire of wide 2mm, be clipped between ply of paper, obtain having the clamp paper of wire.
[embodiment 4]
The gained thermal photography is made prepaid card with literal such as printing points for attention on the face of a side that does not form any pattern of the PET film of film in embodiment 1.
[embodiment 5]
By evaporation, be that to form thickness be the Sn thin layer of 250nm for the surface of the PET film of 12 μ m at thickness.Coating PVA solution on formed Sn thin layer (PVA resin, model that (strain) Network ラ レ makes: " 110 ", use with 5% aqueous solution (transparent)) makes its drying, carries out friction treatment then, forms alignment films.Use with embodiment 1 in the identical polymerism cholesteric crystal solution of use, on this alignment films, carry out intaglio printing, make its drying, then irradiation ultraviolet radiation, forming thickness on whole surface is the cholesteric of 2.2 μ m, obtains the thermal photography film.
Use thermal head to carry out lettering by the gained thermal photography with PET film one side of film, the thermal photography behind the lettering is with film angle difference according to the observation, and the form and aspect of lettering cholesteric partly change.When overlapping dextrorotation rotatory polarization plate was observed, lettering partly was colored as green, is changed to left-handed rotatory polarization plate, and then color disappears.
With above-mentioned same, just changing the PET film into thickness is the thick films of 50 μ m, obtains the thermal photography film, carries out lettering by cholesteric one side then, still can obtain effect same as described above.
[embodiment 6]
With use among the embodiment 1 identical, using polymerism cholesteric crystal solution, is that a side surface of the PET film of 50 μ m carries out intaglio printing at thickness, makes its drying, irradiation ultraviolet radiation is the cholesteric (A) of 2.2 μ m at whole surface formation thickness then.Then, use polymerism cholesteric crystal solution different when forming cholesteric (A), do not form the surface formation cholesteric (B) of cholesteric (A) side at above-mentioned PET film.Then, by evaporation, going up formation thickness in cholesteric (B) is the Sn thin layer of 250nm, obtains the thermal photography film.Employed polymerism cholesteric crystal solution is except the proportioning of polymerism nematic liquid crystal/chiral reagent is 95.5/4.5 when forming cholesteric (B), and employed polymerism cholesteric crystal solution is identical when forming cholesteric (A).
Use thermal head the gained thermal photography with film on lettering, according to observed angle difference, the cholesteric form and aspect of visible lettering part change the thermal photography behind the lettering with film.When overlapping dextrorotation rotatory polarization plate was observed, lettering partly was colored as green, changes left-handed rotatory polarization plate into, then is colored as redness.
Below, Fig. 8 is that of the present invention another of expression is used to judge the basic laminate structures figure of the medium of the true and false.Fig. 9 and Figure 10 are that of the present invention another of expression is used to judge the figure of preferred embodiment of the medium of the true and false.Figure 11 is that expression is fit to of the present invention another is used to judge that the media applications of the true and false is in the figure of the form of object.Figure 12 is that expression is used of the present invention another and is used to judge the figure of example of the medium of the true and false.
Shown in Fig. 8 (a), the basic comprising that another is used to judge the medium 41 of the true and false of the present invention is to contain following laminate structures: two-layer light selects reflection horizon A and B (symbol 43A and 43B) via phase separation layer 42 laminated forming.The layer that two-layer light selects reflection horizon A and B (43A and 43B) all to serve as reasons to have one of them light of left circularly polarized light in the reflection incident light or right-circularly polarized light to select reflexive material to form, more preferably from a side of the medium 41 that is used to judge the true and false, be the circularly polarized light of reflection equidirectional, for example contain cholesteric.In addition, preferably each catoptrical centre wavelength is different with B (symbol 43A and 43B) for two-layer light selection reflection horizon A.
The phase separation layer 42 that is laminated between two-layer light selection reflection horizon A and the B is the light of birefringence incident, produces out of phase according to direction of polarized light, makes it have the layer of phase differential.Birefringence be since the refractive index of medium according to direction of polarized light and inhomogeneous, and the phenomenon that takes place thus, the known phase differential σ that sees through the light of above-mentioned medium is σ=2 π (ne-no) d/ λ.Here, ne is the extraordinary light refractive index, and no is the ordinary ray refractive index, and d is the thickness of medium, and λ is a light wavelength.That is, for the medium of certain thickness d, phase differential σ is relevant with light wavelength λ.To the right-circularly polarized light of phase separation layer 42 incident wavelength λ=2 (ne-no) d, then this right-circularly polarized light of transmission produces phase differential σ=π (i.e. 1/2 wavelength).Therefore, the right-circularly polarized light of incident is transformed into left circularly polarized light and penetrates, and the left circularly polarized light of incident is transformed into right-circularly polarized light and penetrates.Above-mentioned phase separation layer 42 constitutes the transparent base film except the oriented film with plastics, as described later, and also can nematic liquid crystal layer or nematic liquid crystal layer and transparent base film formation.
Above-mentioned basic comprising, promptly, two-layer light selection reflection horizon A and B (symbol 43A and 43B) are via the lamilated body of the phase separation layer 42 laminated laminate structures that form, when wherein light selection reflection horizon A and B are extremely thin fully, all be transparent, therefore also can have an X-rayed an opposite side via this lamilated body.As described later, the laminate structures of this basic comprising structure that can change.
Suppose that two-layer light selection reflection horizon A and B (symbol 43A and 43B) all reflect right-circularly polarized light.Shown in Fig. 8 (b), at above-mentioned fundamental, make natural light select reflection horizon A (symbol 43A) side incident by light, natural light comprises right-circularly polarized light and left circularly polarized light, therefore select the effect of reflection horizon A (symbol 43A) by light, only optionally reflect right-circularly polarized light, can observe this reflected light (right-circularly polarized light) by dextrorotation rotatory polarization plate.
Select reflection horizon A (symbol 43A) by the Left-hand circular polarization light transmission light in the natural light of light selection reflection horizon A (symbol 43A) side incident.The left circularly polarized light of transmission is transformed into right-circularly polarized light (" left side → right side " expression among the figure is transformed into right-circularly polarized light by left circularly polarized light) through phase separation layer 42.The right-circularly polarized light of conversion is selected reflection horizon B (symbol 43B) reflection by light.This reflected light (right-circularly polarized light) sees through phase separation layer 42 once more, is transformed into left circularly polarized light (" right side → left side " expression among the figure is transformed into left circularly polarized light by right-circularly polarized light).The left circularly polarized light of conversion selects reflection horizon A (symbol 43A) to penetrate through light, therefore can observe this ejaculation light (left circularly polarized light) by left-handed rotatory polarization plate.
Therefore, if that quotes Fig. 8 explanation of the present inventionly is used to judge that the basic comprising of the medium 41 of the true and false sticks on the article of its authenticity of needs judgement, then by having lower floor's perspectivity, and independent respectively dextrorotation rotatory polarization plate or the left-handed rotatory polarization plate of using, can observe light through above-mentioned different light paths, and, two-layer light is selected reflection horizon A, and preferably each catoptrical centre wavelength is different with B (symbol 43A and 43B), therefore when using dextrorotation rotatory polarization plate to observe and when using left-handed rotatory polarization plate observation, the color difference of light, therefore can carry out double acknowledge, the recognition function of authenticity improves.
Of the present inventionly be used to judge that the medium 41 of the true and false can be used in various article separately, also can be used in combination with other method that can discern authenticity.
Fig. 9 is that expression will be quoted the figure that fundamental that Fig. 8 describes is applied in the example on the hologram.Shown in Fig. 9 (a), of the present inventionly be used to judge that the medium 41 of the true and false has following laminate structures: select reflection horizon A (symbol 43A) at the laminated light of the one side of transparent base film 421, select the laminated successively light of an opposite side of reflection horizon A (symbol 43A) to select reflection horizon B (symbol 43B), hologram stratification 44 and reflective layer 45 with the laminated light of transparent base film 421.
Shown in Fig. 9 (b), of the present inventionly be used to judge that the medium 41 of the true and false can have following laminate structures: select reflection horizon A (symbol 43A) at laminated successively phase separation layer 42 of the one side of transparent base film 421 and light, transparent base film 421 laminated phase separation layer 42 and light select the opposite side of reflection horizon A (symbol 43A), laminated successively light is selected reflection horizon B (symbol 43B), hologram stratification 44 and reflective layer 45.Quote in the laminate structures that Fig. 9 (a) illustrates, transparent base film 421 has the function of supporter and the function of phase separation layer 42 concurrently.It is here represented that laminated successively to have light to select reflection horizon A (symbol 43A), phase separation layer 42, transparent base film 421, light to select the lamilated body of reflection horizon B (symbol 43B) also be one of the mutation of the basic laminate structures of the medium 41 that is used to judge the true and false of the present invention.
Perhaps as shown in figure 10, of the present inventionly be used to judge that the medium 41 of the true and false can have following laminate structures: between transparent base film 421 and phase separation layer 42, have alignment films A (symbol 46A), select to have alignment films B (symbol 46B) between the reflection horizon B (symbol 43B) in transparent base film 421 and light.Here it also is one of the mutation of the basic laminate structures of the medium 41 that is used to judge the true and false of the present invention that represented laminated successively light is selected the lamilated body of reflection horizon A (symbol 43A), phase separation layer 42, alignment films A (symbol 46A), transparent base film 421, alignment films B (symbol 46B) and light selection reflection horizon B (symbol 43B).
Quote Fig. 9 and Figure 10 explanation the preferred embodiments of the invention---be used for judging the medium 41 of the true and false, above-mentioned fundamental has perspectivity, therefore can guarantee the visuality of the hologram that hologram stratification and reflective layer by the back side one side generate.In addition, the light that two-layer light selects reflection horizon A and B (43A and 43B) all to have left circularly polarized light in the reflection incident light is selected reflectivity, or the light with reflection right-circularly polarized light is selected reflectivity, and each catoptrical centre wavelength is not simultaneously, can be observed different colors when using right-circularly polarized light or left-handed rotatory polarization plate.Therefore, when using with medium 41 as the judgement true and false, except hologram appearing and the difficulty on making based on the hologram characteristic, can carry out the identification of two methods by using dextrorotation rotatory polarization plate and left-handed rotatory polarization plate respectively, for using the article of the described judgement true and false, can carry out the identification of authenticity with higher reliability with medium.
The medium 41 that is used for judging the true and false of the present invention, two-layer light select reflection horizon A and B (43A and 43B) be by have that one of them light of left circularly polarized light in the reflection incident light or right-circularly polarized light selects that reflexive material forms layer, for example contain cholesteric.
Two-layer light selects reflection horizon A and B (43A and 43B) can use the solvent solution of cholesteric crystal by various printing processes, make its dry formation, perhaps at this moment, use the polymerism cholesteric crystal to prepare the polymerizable ultraviolet composition, use gained polymerizable ultraviolet composition by various printing processes, dry back irradiation ultraviolet radiation forms its polymerization.
For selecting reflection horizon A different two-layer light with the reflected light centre wavelength that B (43A and 43B) makes each layer, preferably each layer thickness difference, perhaps the pitch difference of each layer.As mentioned above, use polymerism cholesteric crystal prepares the polymerizable ultraviolet composition and forms light when selecting the reflection horizon, polymerism nematic liquid crystal and chiral reagent are used in combination, at this moment, make the nematic liquid crystal of polymerism and the different polymerizable ultraviolet composition of proportioning of chiral reagent by use, can form the mutually different cholesteric of pitch.
Transparent base film 421 can make its reduced thickness, preferably has the solvent resistance and the thermotolerance of physical strength or the anti-manufacturing processing when being used to judge the medium of the true and false.Select according to application target, be not particularly limited, preferably make the plastics of film like or sheet.For example have: various plastic sheetings such as polyethylene terephthalate (PET), polycarbonate, polyvinyl alcohol (PVA), polysulfones, tygon, polypropylene, polystyrene, poly-polyarylate, tri acetyl cellulose (TAC), diacetyl cellulose, polyethylene/vinyl base alcohol.
Can be as required in the laminated alignment films of the single or double of transparent base film 421.Alignment films can be made of any material so long as polyvinyl alcohol resin (PVA), polyimide resin etc. get final product as the material of alignment films usually.The following formation of alignment films: by suitable rubbing method, the solvent solution of these resins is coated on the transparent base film 421, makes its drying, use frictions such as cloth, brush then, carry out friction orientation and form.When transparent base film 421 is made of the plastic sheet that stretches,, therefore can omit the laminated of alignment films because it has orientation in the surface originally.
Phase separation layer 42 for example can use nematic liquid crystal to constitute, use contains the ink composite of nematic liquid crystal, preferably contains the ink composite of the solvent solution of nematic liquid crystal, form by various print processes, except that using separately, can be in the surperficial laminated formation of the transparent base film 421 that self has orientation, perhaps on the surface of base film 421 via alignment films 46 laminated formation.If transparent base film 421 is the plastic sheeting for stretching also, also can be used as phase separation layer 42, above-mentioned in laminated phase separation layer 42 on the transparent base film 421 or function that all can whole performance phase separation layer 42 on transparent base film 421 via alignment films 46 laminated phase separation layers 42 etc.
Hologram stratification 44 is that the micro concavo-convex that forms three-dimensional hologram on the one side of the layer that contains transparent resin material forms.
The transparent resin material that constitutes hologram stratification 44 can use various thermoplastic resins, heat-curing resin or ionizing ray curable resin.Thermoplastic resin has acryl resin, acrylamide resin, Nitro cellulose resin or polystyrene resin etc., and heat-curing resin has that unsaturated polyester resin, acrylated polyurethane resin, epoxy radicals are acrylic resin modified, epoxy radicals modified unsaturated polyester resin, alkyd resin or phenolics etc.These thermoplastic resins and heat-curing resin can use one or more.It is crosslinked that one or more of these resins can use various isocyanate resins to carry out, perhaps mix metal base such as various curing catalysts, for example cobalt naphthenate or zinc naphthenate, perhaps mix superoxide, benzophenone, acetophenone, anthraquinone, naphthoquinones, azoisobutyronitrile or diphenyl sulfides etc. such as benzoyl peroxide by heat or ultraviolet-initiated polymerization, methyl ethyl ketone peroxide.The ionizing ray curable resin has: epoxy acrylate, urethanes acrylate, acrylic acid modified polyester etc., can in above-mentioned ionizing ray curable resin, import cross-linked structure, perhaps, mix and use monofunctional monomer or polyfunctional monomer or oligomer etc. in order to regulate viscosity.
When using above-mentioned resin material to form hologram stratification 44, can interfere exposure by on the photoresist material, carrying out hologram, directly form by developing, also can use ready-made three-dimensional hologram or its duplicate or their plating mould etc. as backed stamper, carry out figuration by the layer that on this die face, is pressed into above-mentioned resin material.When using heat-curing resin or ionizing ray curable resin, uncured resin and die face are fitted tightly, make its curing by heating or ionizing ray irradiation then, peel off after the curing, can form the micro concavo-convex of three-dimensional hologram thus in the one side of the layer that contains the transparent resin material that has solidified.Form pattern form by same method, the diffraction grating cambium layer with diffraction grating of making pattern-like is also contained in the hologram stratification 44.Hologram stratification and diffraction grating cambium layer are called the optically diffractive structure layer altogether.
Along the reflection horizon 45 that the micro concavo-convex of three-dimensional hologram forms can be any in reflexive metallic film or the hyaline layer different with the optical index of hologram stratification 44, when using the former, opaque hologram can be obtained, when using the latter, transparent hologram can be obtained.Above-mentioned situation can improve visual reflection hologram when being by illumination, by observer's unilateral observation.
The material that constitutes reflexive metallic film can use: the oxide of metal such as Al, Cr, Ti, Fe, Co, Ni, Cu, Ag, Au, Ge, Mg, Sb, Pb, Cd, Bi, Sn, Se, In, Ga or Rb or these metals or nitride etc., use wherein a kind of or, can form reflexive metallic film multiple combination.Wherein preferred especially Al, Cr, Ni, Ag or Au etc., preferably its thickness is 1nm-10,000nm, more preferably 2nm-200nm.
The material that constitutes the hyaline layer different with the optical index of hologram stratification 44 has: the transparent material different with the optical index of the cambial resin material of hologram.The optical index of this transparent material can greatly also can be little than the optical index of the cambial resin of hologram, preferably with the anaclasis rate variance of hologram stratification 44 be 0.1 or more than, more preferably 0.5 or more than, preferred especially 1.0 or more than.The concrete preferred material that uses has: titanium dioxide (TiO
2), zinc sulphide (ZnS), CuAl composite metal oxide etc.Thickness is that 20nm or following metallic film also have the transparency, therefore also can be as the material that constitutes the hyaline layer different with the optical index of hologram stratification 44.
Use any material to constitute, reflective layer 45 can form by known method such as distillation, vacuum evaporation, sputter, reactive sputtering, ion plating or plating.
As quote Figure 11 explanation, be used to judge that the medium 41 of the true and false is processed into the form of label or transfer printing sheet, can adopt the medium 41 that is used to judge the true and false, in the various article that easily are applied to by quoting Fig. 8-the of the present invention of Figure 10 explanation.
Figure 11 (a) relates to the form of label, diagram for example be the laminated adhesive layer 52 of reflective layer 45 1 sides at the medium 41 that is used to judge the true and false (Fig. 9 (b)), be configured for judging the media label 51 of the true and false.Wherein saidly be used to judge that the medium 41 of the true and false contains following laminate structures: the one side of transparent base film 421 is laminated to have phase separation layer 42 and light to select reflection horizon A (symbol 43A), has phase separation layer 42 and light to select the laminated light of opposite one sides of reflection horizon A (symbol 43A) to select reflection horizon B (symbol 43B), hologram stratification 44 and reflective layer 45 in that transparent base 421 is laminated.Being not limited to above-mentioned laminate structures, can also be other laminate structures of quoting Fig. 8-Figure 10 explanation.
Figure 11 (b) relates to the form of transfer printing sheet, illustrated embodiment is the laminated adhesive layer 52 of reflective layer 45 1 sides at the medium 41 that is used to judge the true and false (Fig. 9 (b)), at the rippability face 54a of the laminated rippability base material 54 of light selection reflection horizon A (symbol 43A) side, be configured for judging the medium transfer printing sheet 53 of the true and false.Wherein saidly be used to judge that the medium 41 of the true and false contains following laminate structures: laminated successively phase separation layer 42 of the one side of transparent base film 421 and light are selected reflection horizon A (symbol 43A), have phase separation layer 42 and light to select the laminated successively light of opposite one sides of reflection horizon A (symbol 43A) to select reflection horizon B (symbol 43B), hologram stratification 44 and reflective layer 45 in that transparent base 421 is laminated.Being not limited to above-mentioned laminate structures, can also be other laminate structures of quoting Fig. 8-Figure 10 explanation.
When using dextrorotation rotatory polarization plate to observe the medium 41 that is used to judge the true and false of the present invention and when using left-handed rotatory polarization plate to observe, for the catoptrical effect that makes visible different colours further clear, or/and when laminated hologram stratification 44 of lower floor's one side or reflective layer 45 in order further to improve the visuality of hologram, preferably at the dark layer of the dark resin beds such as the laminated black of lower floor's one side of each layer etc.Quote Figure 11 explanation when the laminated adhesive layer 52 of lower floor's one side, also can be between reflective layer 45 and adhesive layer 52 laminated dark layer, perhaps use dark dark tackifier such as being colored as black to replace laminated dark layer in addition, constitute adhesive layer 52.
The medium that is used to judge the true and false of the present invention 41 is preferred to be used the form of the above-mentioned media label 51 that is used to judge the true and false or is used to judge the form of the medium transfer printing sheet 53 of the true and false, is applied in the various article.The form that is used to judge the media label 51 of the true and false is used by adhesive layer 52 being attached to adherend one side, the form that is used to judge the medium transfer printing sheet 53 of the true and false is by adhesive layer being sticked on adherend one side, rippability base material 54 being peeled off used then.
Figure 12 be to main be the figure that judges that the application of medium 41 of the true and false describes of being used to of object with the tablet.Shown in Figure 12 (a) is authenticable information recording 55 in the laminated decidable true and false that is used to judge the medium 41 of the true and false and constitutes of the part on the surface of authenticable information recording 56.Authenticable information recording 56 is to be the tablet of base material with paper or plastic sheet etc., in the illustrated embodiment, by modes such as printings, forms information 57 and records such as literal such as the amount of money as security, distributing and releasing corporation's name, points for attention or color literary composition.
Shown in Figure 12 (b) is to be used for judging that the medium 41 of the true and false is built in tablet in advance, forms visual formation; On paper or plastic sheet etc., form the recess peristome 59 that does not have perforation, can see the medium 41 that is used to judge the true and false by peristome 59, in order easily to be used to judge the medium 41 of the true and false, an one example is: be cut into the lengthwise wire among the extremely narrow figure about 0.5mm * 5mm, when being applied on the paper, in the time will constituting paper multiple-layer laminated, at the layer that constitutes the top layer peristome 59 is set, at the medium 41 that is used to judge the true and false of the interlayer folder inlet wire shape of tablet.Being used to of wire judges that the medium 41 of the true and false can be as required, visuality when shining in order to improve circularly polarized light, on single faces such as base material, carry out the painted of dark system, in addition, be built under the state of tablet, be used to judge the medium 41 of the true and false and the cohesive of tablet for what guarantee wire, can be at the laminated adhesive layer of single face or two sides, preferred heat snensitive adhesives layer.In above-mentioned tablet, be used to judge the medium 41 of the true and false, can utilize in the printed article of authenticable information recording, particularly security or other economically valuable.
[embodiment 7]
Using polymerism cholesteric crystal solution (A), is that the PET film surface of 50 μ m carries out intaglio printing at thickness, makes its drying, irradiation ultraviolet radiation then, and forming thickness on whole surface is the cholesteric (A) of 2.2 μ m.In addition, formed the relative one side of cholesteric at the PET film, used other polymerism cholesteric crystal solution (B) to carry out intaglio printing, made its drying, irradiation ultraviolet radiation is the cholesteric (B) of 2.2 μ m at whole formation thickness then.
The above-mentioned polymerism cholesteric crystal solution (A) that uses is polymerism nematic liquid crystal (BASF (strain) makes, trade name: " パ リ オ カ ラ one LC242 "), chiral reagent (BASF (strain) makes, trade name: " パ リ オ カ ラ one LC756 ") and 20% solution (solvent is toluene) that is mixed with the polymerizable ultraviolet initiating agent, wherein, the proportioning of polymerism nematic liquid crystal/chiral reagent is 95.3/4.7, and the polymerizable ultraviolet initiating agent mixes 5% with respect to the polymerism nematic liquid crystal.In the polymerism cholesteric crystal solution (B), the proportioning of polymerism nematic liquid crystal/chiral reagent is 96.2/3.8, and is in addition identical with before polymerism cholesteric crystal solution (A).
Cholesteric (B) side coating transparent, UV hardening resin composition at the composite membrane of laminate structures with gained cholesteric (A)/PET film/cholesteric (B), make the die face period of contact irradiation ultraviolet radiation of duplicating of itself and three-dimensional hologram with mould, the transparent, UV hardening resin composition is solidified, form three-dimensional hologram, the one side vacuum evaporation TiO of three-dimensional hologram is arranged at figuration then
2, forming thickness is the transparent mode reflective layer of 500nm, obtains being used to judge the medium of the true and false.
Gained is used to judge that the medium of the true and false changes angle observation, then the color change effect that as seen produces owing to cholesteric from cholesteric (A) side.Be used to judge that at this cholesteric (A) one of the medium of the true and false stresses folded dextrorotation rotatory polarization plate, then all as seen be colored as green, take away dextrorotation rotatory polarization plate, as seen overlapping left-handed rotatory polarization plate then all is colored as redness, can carry out identification.
[embodiment 8]
Using polymerism nematic liquid crystal solution, is that the PET film surface of 38 μ m carries out the gravure roll coating at thickness, makes its drying, irradiation ultraviolet radiation then, and forming thickness is the nematic liquid crystal layer of 1.0 μ m.Here employed polymerism nematic liquid crystal solution is 15% solution (solvent is toluene and cyclohexanone) that is mixed with polymerism nematic liquid crystal (BASF (strain) makes, trade name: " パ リ オ カ ラ one LC242 "), ultraviolet polymerization initiator, wherein, ultraviolet polymerization initiator mixes 5% with respect to the polymerism nematic liquid crystal.Replace the PET film among the embodiment 7 to use the lamilated body of nematic liquid crystal layer/PET film of forming like this, in addition carry out similarly to Example 7, obtain being used to judge the medium of the true and false.
Being used to of gained, the medium of judging the true and false was when changing angle from cholesteric (A) side and observe, the color change effect that visible cholesteric produces.Be used to judge that at this cholesteric (A) one of the medium of the true and false stresses folded dextrorotation rotatory polarization plate, then all be colored as green, take away dextrorotation rotatory polarization plate, overlapping left-handed rotatory polarization plate, then all be colored as redness, can carry out identification.
[embodiment 9]
At thickness is the TAC film surface coating PVA solution (PVA resin, the model of (strain) Network ラ レ system: " 110 ", use with 5% aqueous solution (transparent)) of 75 μ m, make its drying, carry out friction treatment then, form alignment films, then similarly to Example 8, forming thickness on alignment films is the nematic liquid crystal layer of 1.5 μ m, and similarly to Example 7, form thickness on nematic liquid crystal layer is the cholesteric (A) of 2.2 μ m comprehensively.
Similarly to Example 7, TAC film at the composite membrane of the laminate structures with above-mentioned gained cholesteric (A)/alignment films/TAC film exposes face one side, carry out the formation of three-dimensional hologram and the formation of the transparent mode reflective layer that thickness is 500nm successively, obtain being used to judge the medium of the true and false.
Being used to of gained judges that the medium of the true and false changes angle from cholesteric (A) side and observes the color change effect that visible cholesteric produces.Be used to judge that at this cholesteric (A) one of the medium of the true and false stresses folded dextrorotation rotatory polarization plate, then as seen all be colored as green, take away dextrorotation rotatory polarization plate, overlapping left-handed rotatory polarization plate, then all be colored as redness, can carry out identification.
Then, shown in Figure 13 (a), of the present inventionly anotherly be used for judging that the medium 61 of the true and false has following laminate structures: laminated successively alignment films 63, light are selected reflection graphic patterns layer 64 on the accompanying drawing of base material 62, laminated hologram stratification 65 below in the accompanying drawing of base material 62, with this as the optically diffractive structure layer, laminated reflective layer below hologram stratification 65 (being also referred to as the light reflective layer) 66.Hologram stratification 65 side in its lower section has the micro concavo-convex of hologram, and reflective layer 66 is laminated along micro concavo-convex.In this example, light is selected to accompany in the middle of reflection graphic patterns layer 64 and hologram stratification 65 and the reflective layer 66 base material 62 and is carried out laminatedly, can not interact when therefore forming respectively.
Shown in Figure 13 (b), of the present inventionly be used for judging that the medium 61 of the true and false can have following laminate structures: laminated successively alignment films 63, light are selected reflection graphic patterns layer 64, hologram stratification 65 and reflective layer 66 below the accompanying drawing of base material 62.Still be the micro concavo-convex that the following side of hologram stratification 65 has hologram, reflective layer 66 is laminated along this micro concavo-convex.Such advantage is that only at laminated each layer of a side of base material, the base material 62 that exposes above can be used as protective seam.
In above-mentioned two examples, light select reflection graphic patterns layer 64 be by have that one of them light of left circularly polarized light in the reflection incident light or right-circularly polarized light selects that reflexive material forms layer, for example contain cholesteric, by layer have or not or the thickness of layer forms pattern.Reflective layer 66 for example is made of metallic film etc.
Quote in each example of Figure 13 explanation, light selects reflection graphic patterns layer 64 to select the reflection graphic patterns layer to constitute by two kinds of light, also can be made of but the thickness difference mutual identical materials, and the material that perhaps constitutes each layer is not equal.It can be uniform layer that a kind of light among two kinds is selected the reflection graphic patterns layer.
Quote being equipped with in the example of Figure 13 explanation, all showing need the alignment films 63 different with base material 62, but when the plastic sheet that stretches made base material 62, the surface of base material 62 itself had orientation, so can omit the laminated of alignment films 63.
Base material 62 can make its reduced thickness, but preferably has the solvent resistance and the thermotolerance of physical strength or the anti-manufacturing processing when being used to judge the medium 61 of the true and false.Select according to application target is different, be not particularly limited the plastics of preferred film shape or sheet.For example can be: various plastic sheetings such as polyethylene terephthalate (PET), polycarbonate, polyvinyl alcohol (PVA), polysulfones, tygon, polypropylene, polystyrene, polyarylate, tri acetyl cellulose (TAC), diacetyl cellulose, polyethylene/vinyl base alcohol.
Alignment films 63 all can be used so long as polyvinyl alcohol resin (PVA), polyimide resin etc. are used as the material of alignment films usually.Alignment films 63 can followingly form: by suitable coating process, the solvent solution of these resins is coated on the surface of above-mentioned base material 62, makes its drying, use frictions such as cloth, brush then, carry out friction orientation and form.It is two-layer or two-layer when above that light selects the reflection graphic patterns layer to be provided with, and the alignment films that is provided with between light selection reflection graphic patterns layer forms too as required.
Light selects reflection graphic patterns layer 64 to contain cholesteric.The cholesteric that is in state of orientation has one of them character of the left circularly polarized light that only reflects in the incident light or right-circularly polarized light.Light selects reflection graphic patterns layer 64 followingly to form: the solvent solution of cholesteric crystal is used for pattern form, make its drying, perhaps use the polymerism cholesteric crystal to prepare the polymerizable ultraviolet composition this moment, be used for pattern form, dry back irradiation ultraviolet radiation makes its polymerization.
When selecting reflection graphic patterns layer 64 to form pattern-like light, preferably undertaken, in addition, when selecting reflection graphic patterns layer 64 to be set to two or more light, form uniform layer, can be undertaken by various rubbing methods for making one of them kind by various print processes.
Hologram stratification 65 is the micro concavo-convexes that form three-dimensional hologram in the one side of the layer that contains transparent resin material.
The transparent resin material that constitutes hologram stratification 65 can use various thermoplastic resins, heat-curing resin or ionizing ray curable resin.Thermoplastic resin has acryl resin, acrylamide resin, Nitro cellulose resin or polystyrene resin etc., and heat-curing resin has that unsaturated polyester resin, acrylated polyurethane resin, epoxy radicals are acrylic resin modified, epoxy radicals modified unsaturated polyester resin, alkyd resin or phenolics etc.These thermoplastic resins and heat-curing resin can use one or more.It is crosslinked that one or more of these resins can use various isocyanate resins to carry out, perhaps mix metal base such as various curing catalysts, for example cobalt naphthenate or zinc naphthenate, perhaps mix superoxide, benzophenone, acetophenone, anthraquinone, naphthoquinones, azoisobutyronitrile or diphenyl sulfides etc. such as benzoyl peroxide by heat or ultraviolet-initiated polymerization, methyl ethyl ketone peroxide.The ionizing ray curable resin has: epoxy acrylate, urethanes acrylate, acrylic acid modified polyester etc., can in above-mentioned ionizing ray curable resin, import cross-linked structure, perhaps, mix and use monofunctional monomer or polyfunctional monomer or oligomer etc. in order to regulate viscosity.
When using above-mentioned resin material to form hologram stratification 65, can interfere exposure by on the photoresist material, carrying out hologram, directly form by developing, also can use ready-made three-dimensional hologram or its duplicate or their plating mould etc. as backed stamper, carry out figuration by the layer that on this die face, is pressed into above-mentioned resin material.When using heat-curing resin or ionizing ray curable resin, uncured resin and die face are fitted tightly, make its curing by heating or ionizing ray irradiation then, peel off after the curing, can form the micro concavo-convex of three-dimensional hologram in the one side of the layer that contains the transparent resin material that has solidified.Form pattern form by same method, the diffraction grating cambium layer with diffraction grating of making pattern-like also can be used as the optically diffractive structure layer.
To be that reflexive metallic film or the hyaline layer different with the optical index of hologram stratification 65 are any along the reflection horizon 66 that the micro concavo-convex of three-dimensional hologram forms, when using the former, opaque hologram can be obtained, when using the latter, transparent hologram can be obtained.Above-mentioned situation can improve visual reflection hologram when being by illumination, by observer's unilateral observation.
The material that constitutes reflexive metallic film can use: the oxide of metal such as Al, Cr, Ti, Fe, Co, Ni, Cu, Ag, Au, Ge, Mg, Sb, Pb, Cd, Bi, Sn, Se, In, Ga or Rb or these metals or nitride etc., use wherein a kind of or be used in combination, can form reflexive metallic film multiple.Wherein preferred especially Al, Cr, Ni, Ag or Au etc., preferably its thickness is 1nm-10,000nm, more preferably 2nm-200nm.
The material that constitutes the hyaline layer different with the optical index of hologram stratification 65 has: the transparent material different with the optical index of the cambial resin material of hologram.The optical index of this transparent material can greatly also can be little than the optical index of the cambial resin of hologram, preferably with the anaclasis rate variance of hologram stratification 65 be 0.1 or more than, more preferably 0.5 or more than, preferred especially 1.0 or more than.The concrete preferred material that uses has: titanium dioxide (TiO
2), zinc sulphide (ZnS), CuAl composite metal oxide etc.Thickness is that 20nm or following metallic film also have the transparency, therefore also can be as the material that constitutes the hyaline layer different with the optical index of hologram stratification 65.
Use any material to constitute, reflective layer 65 can form by known method such as distillation, vacuum evaporation, sputter, reactive sputtering, ion plating or plating.
To quote the medium that is used for identification 61 that Figure 13 (a) illustrates is example, and the method for identification is described.At first, under natural light, observe the medium 61 that is used to judge the true and false of the present invention, as schematically expression of Figure 14 (a),, can see the holographic Figure 67 that below hologram stratification 65, writes down with the micro concavo-convex form by the light reflection of reflective layer 66, at this moment, it is transparent that light is selected reflection graphic patterns layer 64, and the angle difference is used to judge that the medium 61 of the true and false is colored as different colours according to the observation, shown in Figure 14 (b), visible rendered image 68 '.Here, it is layers of selecting reflexive material to form by the light with reflection right-circularly polarized light that light is selected reflection graphic patterns layer 64, if select reflection graphic patterns layer 64 incident left circularly polarized light to this light, then left circularly polarized light is not reflected, therefore shown in Figure 14 (c), not video picture of literal " A " is for seeing the state of holographic Figure 67.
For quoting the medium 61 that is used to judge the true and false that Figure 13 (b) illustrates, also similarly can carry out identification with above-mentioned.
Therefore, quote Figure 13 explanation, light selects the laminated medium 61 that is used to judge the true and false of the present invention that forms of reflection graphic patterns layer 64 and hologram stratification 65 angle is different or by the incident left circularly polarized light according to the observation, show different reflectivity, from observer's angle, can see different images, image by the genuine piece confirmed more in advance, or left circularly polarized light incided genuine piece and will carry out the article of identification, by comparing reflectivity or finding image, can carry out identification.Left circularly polarized light being incided light select reflection graphic patterns layer 64 to observe, can be left-handed rotatory polarization plate to be overlapped light select to observe on the reflection graphic patterns layer 64.
As quote the following explanation of Figure 15, be used to judge that by quoting the of the present invention of Figure 13 explanation the medium 61 of the true and false is processed into the form of label or transfer printing sheet, can easily be applied to adopt the various article of the medium 61 that is used for judging the true and false.
Figure 15 (a) is the form of label, and cited is at the laminated adhesive layer 72 of reflective layer 66 1 sides of the medium 61 that is used to judge the true and false, is configured for judging the media label 71 of the true and false.Wherein saidly be used to judge that the medium 61 of the true and false contains following laminate structures: layered base 62, light are selected reflection graphic patterns layer 64, hologram stratification 65 and reflective layer 66 successively.Be configured for judging the true and false media label 71 be used to judge that the medium 61 of the true and false is not limited only to above-mentioned laminate structures, can also be to quote each laminate structures of Figure 13 explanation or their omit alignment films 63 resulting laminate structures.
As quote the above-mentioned explanation that Figure 15 (a) carries out, when being used for identification,, also can be at the laminated adhesive layer of base material 62 1 sides more preferably at the laminated adhesive layer 72 of reflective layer 66 1 sides.At the laminated adhesive layer of which side of the medium 61 that is used to judge the true and false, this can be that the plane of incidence is determined according to which face of reflective layer 66 1 sides or base material 62 1 sides when applying label on various article.When reflective layer 66 was made of the metallic film of reflectivity (i.e. the transparency except), base material 62 1 sides were the plane of incidence.Be used for judging the medium 61 of the true and false; when as the tri acetyl cellulose film, using the base material that must have alignment films 63 to constitute; for visible above-mentioned sub-image; can carry out the incident of right-circularly polarized light or left circularly polarized light by reflective layer 66 1 sides; also can be undertaken by base material 62 1 sides; but use the surface as pet resin film or polycarbonate resin film to have orientation, when not needing the base material formation of alignment films, must carry out the incident of right-circularly polarized light or left circularly polarized light by reflective layer 66 1 sides.When the laminated adhesive layer of base material 62 1 sides, reflective layer 66 1 sides can laminated protective seam.Adhesive layer 72 can be various forms of adhesive layers, preferred heat snensitive adhesives layer or adhesive phase.
Figure 15 (b) is the form of transfer printing sheet, illustrated embodiment is the laminated adhesive layer 72 of reflective layer 66 1 sides at the medium 61 that is used to judge the true and false, in the rippability face 74a of the laminated rippability layer 74 of base material 62 1 a sides side, be configured for judging the medium transfer printing sheet 73 of the true and false thus.Wherein saidly be used to judge that the medium 61 of the true and false contains following laminate structures: layered base 62, light are selected reflection graphic patterns layer 64, hologram stratification 65 and reflective layer 66 successively.Be configured for judging the true and false medium transfer printing sheet 73 be used to judge that the medium 61 of the true and false is not limited to above-mentioned laminate structures, can be each laminate structures of quoting Figure 13 explanation, or from wherein omitting the laminate structures of alignment films 63 gained.
The medium transfer printing sheet 73 that is used to judge the true and false also be used to judge that the media label 71 of the true and false is same, with a side of laminated adhesive layer which side in the medium 61 that is used to judge the true and false, this is when being applied to various article with the transfer printing sheet, according to the plane of incidence is which face of reflective layer 66 1 sides or base material 62 1 sides decides, and a side of laminated adhesive layer can laminated rippability base material 74.Adhesive layer 72 can be various forms of adhesive layers, preferred heat snensitive adhesives layer or adhesive phase.Adhesive layer is applied to adopt the surface of the various article of the medium 61 of judging the true and false, and the transfer printing sheet also can be the formation that does not have adhesive layer.
In order further to improve pattern that medium 61 light that are used for judging the true and false of the present invention select reflection graphic patterns layer 64, preferably at the laminated dark dark layers such as resin bed such as black that are colored as of lower floor's one side of each layer because of the catoptrical effect of the different visible different colours of viewing angle or/and based on the visuality of the hologram of the hologram stratification 44 of lower floor's one side or reflective layer 5.Quote Figure 15 explanation when the laminated adhesive layer 72 of lower floor's one side, also can be between reflective layer 66 and adhesive layer 72 laminated dark layer, perhaps use the dark tackifier that is colored as dark color such as black to replace other laminated dark layer, formation adhesive layer 72.
The medium that is used to judge the true and false of the present invention 61 is preferred to be used the form of the above-mentioned media label 71 that is used to judge the true and false or is used to judge the form of the medium transfer printing sheet 73 of the true and false, is applied in the various article.The form that is used to judge the media label 71 of the true and false is used by adhesive layer 72 being attached to adherend one side, the form that is used to judge the medium transfer printing sheet 73 of the true and false is by adhesive layer 72 being sticked on adherend one side, rippability base material 74 being peeled off used then.
Figure 16 be to main be the figure that judges that the application of medium 61 of the true and false describes of being used to of object with the tablet.Shown in Figure 16 (a) is authenticable information recording 75 in the laminated decidable true and false that is used to judge the medium 61 of the true and false and constitutes of the part on the surface of authenticable information recording 76.Authenticable information recording 76 is to be the tablet of base material with paper or plastic sheet etc., in the illustrated embodiment, by modes such as printings, forms information 77 and records such as literal such as the amount of money as security, distributing and releasing corporation's name, points for attention or color literary composition.
Shown in Figure 16 (b) is to be used for judging that the medium 61 of the true and false is built in tablet in advance, forms visual formation; On paper or plastic sheet etc., form the recess peristome 79 that does not have perforation, can see the medium 61 that is used to judge the true and false by peristome 79, in order easily to be used to judge the medium 61 of the true and false, an one example is: be cut into the lengthwise wire among the extremely narrow figure about 0.5mm * 5mm, when being applied on the paper, in the time will constituting paper multiple-layer laminated, at the layer that constitutes the top layer peristome 79 is set, at the medium 61 that is used to judge the true and false of the interlayer folder inlet wire shape of tablet.Being used to of wire judges that the medium 61 of the true and false can be as required, visuality when shining in order to improve circularly polarized light, on single faces such as base material, carry out the painted of dark system, in addition, under the state in being built in tablet, be used to judge the medium 61 of the true and false and the cohesive of tablet for what guarantee wire, can be at the laminated adhesive layer of single face or two sides, preferred heat snensitive adhesives layer.In above-mentioned tablet, be used to judge the medium 61 of the true and false, can utilize in the printed article of authenticable information recording, particularly security or other economically valuable.
[embodiment 10]
Use polymerism cholesteric crystal printing ink to carry out intaglio printing on the surface of PET film, make its drying then, irradiation ultraviolet radiation forms literal and pattern, obtains printing film.Here employed polymerism cholesteric crystal printing ink is 40% solution that polymerism nematic liquid crystal (BASF (strain) makes, trade name: " パ リ オ カ ラ one LC242 "), chiral reagent (BASF (strain) makes, trade name: " パ リ オ カ ラ one LC756 ") and ultraviolet polymerization initiator (solvent is a toluene) is mixed gained, wherein, the proportioning of polymerism nematic liquid crystal/chiral reagent is 95.5/4.5, and ultraviolet polymerization initiator mixes 5% with respect to the polymerism nematic liquid crystal.
At the opposite one side coating transparent, UV hardening resin composition of the face with having carried out printing of gained printing film, the die face of duplicating with mould of three-dimensional hologram is in contact with it, irradiation ultraviolet radiation solidifies the transparent, UV hardening resin composition, can form three-dimensional hologram thus.Then, vacuum evaporation ZnS on the face of three-dimensional hologram figuration, forming thickness is the transparent mode reflective layer of 400nm, obtains being used to judge the medium of the true and false.
The medium that is used to judge the true and false from reflective layer unilateral observation gained, as seen the literal of hologram, printing and pattern, literal and the pattern of printing is used to judge that the angle of medium of the true and false is different because of observation, form and aspect change, in addition, overlapping left-handed rotatory polarization plate, then only visible hologram, lose the literal and the figure of printing, can carry out identification thus.
[embodiment 11]
Form literal and pattern, three-dimensional hologram, reflective layer in phase the same side of PET film, in addition obtain being used to judge the medium of the true and false similarly to Example 10.The medium that is used to judge the true and false from reflective layer unilateral observation gained, as seen the literal of hologram, printing and pattern, literal and the pattern of printing is used to judge that the angle of medium of the true and false is different because of observation, form and aspect change, in addition, overlapping left-handed rotatory polarization plate, then only visible hologram, lose the literal and the figure of printing, can carry out identification thus.
[embodiment 12]
Similarly to Example 10, surface at the PET film forms literal and pattern, use other polymerism cholesteric crystal printing ink then, form on the face that has formed literal and pattern with before the different literal and the pattern that form, obtained forming two printing films that overlap literal and pattern.In the polymerism cholesteric crystal printing ink that the latter uses, the proportioning of polymerism nematic liquid crystal/chiral reagent is 96.2/3.8, in addition with embodiment 10 use identical.Then, the carrying out of gained printing film the opposite one side of face of printing, form three-dimensional hologram and reflective layer similarly to Example 10 successively, obtain being used to judge the medium of the true and false.
The medium that is used to judge the true and false by reflective layer unilateral observation gained, as seen hologram, two overlaps literal and patterns, this two covers literal and pattern are used to judge that the angle of medium of the true and false is different because of observation, its form and aspect are different respectively to be changed, overlapping left-handed rotatory polarization plate, then only see hologram, the literal and the pattern of printing all lose, thus the decidable true and false.
Claims (27)
1. the medium that is used for identification, it is characterized in that: this medium has two-layer light and selects the reflection horizon by being in this laminated laminate structures that forms of phase separation layer between two-layer, above-mentioned two-layer light selects the reflection horizon to select reflexive material to constitute by having one of them light of left circularly polarized light in the reflection incident light or right-circularly polarized light, and above-mentioned two-layer light selects the reflected light centre wavelength in reflection horizon different.
2. the medium that is used for identification of claim 1, it is characterized in that: above-mentioned phase separation layer is a transparent base film.
3. the medium that is used to judge the true and false of claim 1, it is characterized in that: above-mentioned phase separation layer is the lamilated body that contains transparent membrane and nematic liquid crystal layer.
4. each the medium that is used to judge the true and false among the claim 1-3 is characterized in that: laminated on the face of above-mentioned laminate structures have an optically diffractive structure layer.
5. the medium that is used to judge the true and false of claim 4, it is characterized in that: above-mentioned optically diffractive structure layer is a reflection hologram.
6. claim 4 or 5 the medium that is used to judge the true and false, it is characterized in that: above-mentioned optically diffractive structure layer is attended by the light reflective layer.
7. be used to judge the media label of the true and false, it is characterized in that: in claim 1-6 each be used for judge that the medium of the true and false is also laminated adhesive layer arranged.
8. be used to judge the medium transfer printing sheet of the true and false, it is characterized in that: among the claim 1-6 each be used to judge that the medium of the true and false and the peelable surface layer of rippability base material close.
9. the sheet material of the decidable true and false is characterized in that: the medium that is used to judge the true and false that has among the claim 1-6 each on the part of sheet material visually.
10. the authenticable information recording of the decidable true and false, it is characterized in that:, perhaps on the part of above-mentioned authenticable information recording, have among the claim 1-6 each the medium that is used to judge the true and false as each the medium that is used to judge the true and false among the surperficial laminated requirement 1-6 that has the right of the authenticable information recording of identification object visually.
11. be used to judge the medium of the true and false, it is characterized in that: this medium is by thin layer that light transmission or reflectivity are changed and two-layer at least laminated the forming of the color change layer of giving different colours because of viewing angle is different.
12. the medium that is used to judge the true and false of claim 11 is characterized in that: above-mentioned color change layer is that one of them light of left circularly polarized light or right-circularly polarized light is selected reflective layer in the reflection incident light.
13. the medium that is used to judge the true and false of claim 12 is characterized in that: above-mentioned light selects reflective layer to contain cholesteric.
14. each the medium that is used to judge the true and false among the claim 11-13 is characterized in that: above-mentioned color change layer contain two-layer or two-layer more than.
15. each the medium that is used to judge the true and false among the claim 11-13, it is characterized in that: above-mentioned color change layer contains two-layer, above-mentionedly has phase separation layer between two-layer.
16. the base material of the decidable true and false is characterized in that: the part of base material has among the claim 11-15 each the medium that is used to judge the true and false visually.
17. be used to judge the media label of the true and false, it is characterized in that: this label be in claim 11-15 each be used to judge further laminated adhesive layer on the medium of the true and false.
18. be used to judge the medium transfer printing sheet of the true and false, it is characterized in that: among the claim 11-15 each be used to judge that the medium of the true and false and the rippability surface layer of fissility base material close.
19. be used to judge the medium of the true and false, it is characterized in that: this medium is that each closes layer by layer and forms by light is selected reflection graphic patterns layer and optically diffractive structure layer, and wherein said light selects the reflection graphic patterns layer to contain to have one of them light of left circularly polarized light in the reflection incident light or right-circularly polarized light to select the layer of reflexive material.
20. the medium that is used to judge the true and false of claim 19 is characterized in that: select the reflection graphic patterns layer at the laminated above-mentioned light of the one side of transparent base, at the laminated above-mentioned optically diffractive structure layer of the another side of above-mentioned transparent base.
21. the medium that is used to judge the true and false of claim 19 is characterized in that: the laminated successively above-mentioned light of the one side of transparent base is selected reflection graphic patterns layer and above-mentioned optically diffractive structure layer.
22. each the medium that is used to judge the true and false among the claim 19-21 is characterized in that: above-mentioned optically diffractive structure layer is a reflection hologram.
23. each the medium that is used to judge the true and false among the claim 19-22 is characterized in that: above-mentioned optically diffractive structure layer is attended by the light reflective layer.
24. be used to judge the media label of the true and false, it is characterized in that: this label be in claim 19-23 each be used to judge further laminated adhesive layer on the medium of the true and false.
25. be used to judge the medium transfer printing sheet of the true and false, it is characterized in that: among the claim 19-23 each be used to judge that the medium of the true and false and the rippability surface layer of fissility base material close.
26. the sheet material of the decidable true and false is characterized in that: the part of this sheet material has among the claim 19-23 each the medium that is used to judge the true and false visually.
27. the authenticable information recording of the decidable true and false, it is characterized in that:, perhaps on the part of above-mentioned authenticable information recording, have among the claim 19-23 each the medium that is used to judge the true and false as each the medium that is used to judge the true and false among the surperficial laminated requirement 19-23 that has the right of the authenticable information recording of identification object visually.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP119442/2004 | 2004-04-14 | ||
| JP2004119442A JP4390265B2 (en) | 2004-04-14 | 2004-04-14 | Authenticity determination medium, authenticity determination medium label, authenticity determination medium transfer sheet, authenticity determination sheet, and authenticity determination information recording medium |
| JP119844/2004 | 2004-04-15 | ||
| JP2004119844A JP2005301093A (en) | 2004-04-15 | 2004-04-15 | Medium for determining authenticity, medium label for determining authenticity, medium transfer sheet for determining authenticity, sheet capable of determining authenticity and information recording body capable of determining authenticity |
| JP237194/2004 | 2004-08-17 | ||
| JP2004237194A JP4437721B2 (en) | 2004-08-17 | 2004-08-17 | Authenticity determination medium, base material capable of authenticity determination, authenticity determination medium label, and authenticity determination medium transfer sheet |
| PCT/JP2005/007358 WO2005101069A1 (en) | 2004-04-14 | 2005-04-11 | Authenticity judging medium, base material capable of judging authenticity, authenticity judging medium label, authenticity judging medium transfer sheet, sheet capable of judging authenticity, and information recording element capable of judging authenticity |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101377809A Division CN101363930A (en) | 2004-04-14 | 2005-04-11 | Authentication medium, authenticable substate, authentication medium label, authentication medium transfer sheet, authenticable sheet, and authenticable information recording medium |
| CN2008101377813A Division CN101363931B (en) | 2004-04-14 | 2005-04-11 | Medium, substate, medium label, medium transfer sheet, sheet, and information recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1942789A true CN1942789A (en) | 2007-04-04 |
| CN1942789B CN1942789B (en) | 2010-05-05 |
Family
ID=35329574
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800113600A Active CN1942789B (en) | 2004-04-14 | 2005-04-11 | Authenticity judging medium, base material capable of judging authenticity, authenticity judging medium label, authenticity judging medium transfer sheet, sheet capable of judging authenticity, and in |
| CNA2008101377809A Pending CN101363930A (en) | 2004-04-14 | 2005-04-11 | Authentication medium, authenticable substate, authentication medium label, authentication medium transfer sheet, authenticable sheet, and authenticable information recording medium |
| CN2008101377813A Active CN101363931B (en) | 2004-04-14 | 2005-04-11 | Medium, substate, medium label, medium transfer sheet, sheet, and information recording medium |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101377809A Pending CN101363930A (en) | 2004-04-14 | 2005-04-11 | Authentication medium, authenticable substate, authentication medium label, authentication medium transfer sheet, authenticable sheet, and authenticable information recording medium |
| CN2008101377813A Active CN101363931B (en) | 2004-04-14 | 2005-04-11 | Medium, substate, medium label, medium transfer sheet, sheet, and information recording medium |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4390265B2 (en) |
| CN (3) | CN1942789B (en) |
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| CN102298310A (en) * | 2010-06-23 | 2011-12-28 | 中钞特种防伪科技有限公司 | Imaging illumination system of die-pressing hologram and defect detection method of die-pressing hologram |
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| JP2007144896A (en) * | 2005-11-29 | 2007-06-14 | Dainippon Printing Co Ltd | Recording medium |
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-
2004
- 2004-04-14 JP JP2004119442A patent/JP4390265B2/en not_active Expired - Fee Related
-
2005
- 2005-04-11 CN CN2005800113600A patent/CN1942789B/en active Active
- 2005-04-11 CN CNA2008101377809A patent/CN101363930A/en active Pending
- 2005-04-11 CN CN2008101377813A patent/CN101363931B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2005297449A (en) | 2005-10-27 |
| JP4390265B2 (en) | 2009-12-24 |
| CN101363931A (en) | 2009-02-11 |
| CN101363931B (en) | 2012-01-11 |
| CN101363930A (en) | 2009-02-11 |
| CN1942789B (en) | 2010-05-05 |
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