Method of protection of the securities by applying holographic labels

 

(57) Abstract:

The essence of the invention: flexible framework applied multilayer dielectric structure containing a separator, a protective thermoplastic layers. On thermoplastic layer is fixed in relief-phase hologram labels. Then, on this layer put reflective and adhesive layers. Protected securities transfer and record label with an adhesive layer. Thus the holographic label is protected against mechanical damage of the dielectric layers, therefore, copying the hologram and accidental mechanical damage without damaging the hologram impossible. 2 C.p. f-crystals, 3 ill.

The invention relates to the issue of securities for various purposes, banking, primarily for the protection of securities and documents from possible counterfeits, as well as to give protected securities and documents of high consumer properties. The invention can be used in printing and advertising for the manufacture of various kinds of labels, trademarks and nameplates, servants for the purposes of protection of the original products from the fake and for publicity purposes.

There is a method of protection of securities by registering primary hologram labels, the formation of a rainbow hologram, its up to a working layer, applying an adhesive coating on the reverse side of the label and sticking labels on the protected document. Copying is carried out by detecting secondary hologram on the positive photoresistive material, etching, production of matrix-copy with etched secondary holograms and hologram label on the working layer by contact deformation (forging) using the matrix-copy. As a working layer using a flexible basis (mainly Mylar) coated with up to contact deformation of the reflective coating, and after the contact deformation on the reverse side of the flexible base applied adhesive coating that provides contact holographic label with protected securities.

There is a method of protection of the securities by applying holographic labels [2] in which is similar to the above method of forming a hologram labels, fixing it on the desktop layer in the form of relief-phase holograms and the transfer hologram label on the protected document by a contact adhesive coating to the surface of the protected document. At the same time until fixation of relief-phase hologrammatic, the adhesive coating, and after the transfer of the hologram on the protected document remove flexible based on the separation layer, changing its physical parameters.

The disadvantages of the known methods is the complexity of the technology, called multi-stage process of manufacturing labels, including technological operations of various types (photochemical machining, etching, multiple copying of holograms during manufacture); low degree of protection due to the potential up a fixed geometric relief (relief-phase holograms) deposited on the external surface of the hologram label; low speed due to multi-stage manufacturing technology and hologram label; you cannot identify the tag (within a single technological process of manufacturing a holographic labels) used to protect securities.

Method [2] is the closest to the invention, the technical solution chosen for the prototype.

The objective of the method is to increase the level of protection securities from possible tampering.

The problem is solved due to the fact that p is formirovanii hologramme label, it locks in the form of relief-phase holograms, the reflective coating and the adhesive coating, the transfer hologram label on the surface of the protected securities and the removal of the flexible base prior to formation of the hologram label on the protective layer of the multilayer structure is applied working layer made from a material with photothermoplastic properties, the formation of the hologram label is performed on the surface of the active layer before applying reflective coatings, reflective and adhesive coating is applied sequentially on the working layer after fixing relief-phase holograms, and the fixation of relief-phase holograms is carried out directly after the formation of the hologram label.

The problem is solved due to the fact that between reflective and adhesive coatings applied the mask layer, and also due to the fact that the reflective coating is performed with changing from label to label the reflection coefficient.

In Fig. 1 and 2 is a diagram of the fabrication of holographic labels on the proposed method, where 1 original label, 2 source of coherent radiation, 3 block formation of the hologram, hologram 4 label 5 device fixing holograms, 6 high-voltage source is ralov; in Fig. 3 illustrates the design of hologram labels, and given the cuts made labels for these surgeries, where 12 units application of dielectric coatings (watering machine), 13 unit applying a reflective coating 14, the transfer unit label (stamp), 15 separation layer, protective layer 16, 17 working layer, 18 reflective coating, 19 zone coating of the adhesive, substrate 20, 21 of the mask layer 22 relief-phase holograms, 23 protected surface.

The method consists in the following.

Made the original label, hologram which should be applied to protect the surface of the paper (document). He may be a volumetric model (for rainbow holograms) or flat banner (for two-dimensional hologram), or a combination of flat and three-dimensional components. Illuminating the original labels beam of coherent radiation, get it to a coherent image through which form a hologram of the desired type. Hologram label form on the desktop layer printed on the label, through the block of formation of the hologram.

The label is a multi-layered structure formed as follows.

To hotelno separation, protective layers and work. The separating layer 15 represents a film structure, capable under the influence of external factors (heat, mechanical stress) to change its physical properties, providing after transfer of the hologram label on the protected document destruction flexible base substrate. The function of the protective layer 16 can be reduced to the protection applied to the surface of the document hologram labels from external influences after removal of the substrate. It provides resistance to mechanical and chemical influences and is based lacquer coating with desired physico-chemical properties. Hologram label is fixed on a specially applied on the basis of the working layer 17. As a working layer using a photosensitive thermoplastic layer applied on the basis of the label, i.e., on top of the protective layer.

Drawing on the dielectric fundamentals of coatings with different physico-chemical properties are provided for serial transmission of a flexible framework through watering machine 12.

Forming hologramme beams of coherent radiation is called at each point of the image local changes of physico-chemical properties of the active layer, proportional interest is on the effects of radiation homogeneous electrostatic field on the surface of the active layer varies in proportion to the intensity of radiation, forming a hologram labels. During the subsequent heat treatment which arose under the influence of radiation of the local changes in the surface electric field is transformed into a geometric terrain, the depth of which is proportional to the local intensity of coherent radiation, forming a hologram image tag.

The termination of the heat load and the freezing of the active layer allows to fix the geometrical relief and thereby to obtain relief-phase holograms, i.e., to secure hologram labels on the desktop layer. In this case, the deformation of the working layer is carried out without mechanical contact due to thermal effects on the working layer.

The formation of the hologram and the fixation of relief-phase holograms is carried out directly on the surface of each individual label that allows you to quickly enter in the register the label changes, providing identifitsiruemosti each label (e.g., a number).

After fixation relief-phase holograms on the surface of the working layer is applied reflective and adhesive coating. Reflective coating 18 increases the diffraction efficiency of the recorded hologram, increasing its patki to the label, also allows you to increase the protective properties of holographic labels, because the variation of the reflection coefficient from the label tag is an additional factor complicating fake. The adhesive coating 19 is applied after reflecting coating, providing fixation marks on the surface of the protected document, and carry out from the adhesive with good adhesion to the contact with the layers of the label and to the protected document.

To increase the degree of security hologram labels between a work and an adhesive coating applied additional mask layer 21 made of a material similar in physical and chemical properties of the working layer. In this case, the relief phase hologram is embedded in a "sandwich structure" of two identical layers, between which is caused by geometric relief metallic reflective coating. When the small thickness of the metal layer with good adhesion to photothermoplastic material, this structure does not allow removal of the contact copies of holograms at the physical (chemical) the destruction of one of the layers (e.g., dissolution). The technology of hologram labels on the protected price is eat other technologies that increases the number of degrees of protection.

Consider the example of an implementation of the proposed method in the device.

The original 1 label light radiation source 2 coherent radiation (laser) and with the help of block 3 of the formation of the hologram formed on the surface of the hologram label 4 hologram labels required type (for example, rainbow). The fixing device 5 of the hologram consists of the following blocks. Using a high-voltage source 6, in the discharge period which put the label on the working layer is applied a uniform electrostatic charge. To convert the potential relief in the geometric under thermal influence on the working layer can be applied to the source 8 DC-loaded heat pipe 7 (conductive coating on the dielectric base, is pressed against the reverse side of the label) being in thermal contact with the label. Process synchronization lighting of the original label, its hologram, the application of charge, exposure, symptoms, and fixing the hologram is realized by means of knob 11 time intervals with the output switches 9 and the stopper 10 (for modulation of laser radiation). After removing the heat load goal

Reflective coating 18 is applied on the working layer 17 in block 13 of the application of reflective coatings (installation for spraying metallic coatings, for example, by evaporation in a vacuum). Reflectance coating govern the choice of the appropriate material and by varying the time spent labels in the active area of the sputtering installation. Applying an adhesive coating 19 and the mask layer 21 is carried out in blocks of 12 application of dielectric coatings using standard sprinklers. Type the label in the process of its production, is shown in Fig. 3.

After applying an adhesive coating holographic label is applied to the surface of the protected document. For this purpose it is placed between the block 14 transfer labels (flat stamp with the contour defined by the geometry of the label) and the protected surface 23 of the document. Positioning is realized by means of a precision drive mechanism, which is seasoned with custom labels (in this case, the flexible base is a perforated tape). Through stamp adhesive coating is in mechanical contact with the surface of the protected document and is glued to it. At the same time or after the change ensures physical separation of the flexible base-substrate. At the end of this operation made holographic label fixed to the surface of the protected document.

The main advantages of this method are the increased protection of the hologram and the simplification of manufacturing a label that provides immediate formation of holograms on the surface of the produced labels in real-time. Because after fabrication of the hologram protected against mechanical damage of the dielectric layers, copying the hologram and its accidental mechanical damage without damaging the hologram impossible. Additionally a positive effect in improving performance.

1. METHOD of PROTECTION of the SECURITIES BY APPLYING HOLOGRAPHIC LABELS, lies in the consistent application on a flexible basis for separating and protective layers, the formation of the hologram label, it locks in the form of relief-phase holograms on the desktop layer, the reflective coating and the adhesive coating, the transfer holographic label on the surface of the protected securities and the removal of the flexible base, wherein before formation of the hologram label on the protective layer put the working layer made and the working layer before applying reflective coatings, fixing of holograms is carried out by a contactless deformation immediately after the formation of the hologram labels, reflective and adhesive coating is applied sequentially on the working layer after fixing relief-phase holograms.

2. The method according to p. 1, characterized in that between the reflective and adhesive coatings applied makeready layer.

3. The method according to PP. 1 and 2, characterized in that the reflective coating is performed with changing from label to label the reflection coefficient.

 

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FIELD: printing industry.

SUBSTANCE: invention relates to the field of printing. Machine of screen printing comprises device for removal of printing forms intended to remove printing form from form cylinder and to assemble printing form after connection of printing form, exposed to operation of printing forms making, to form cylinder for printing on sheet. Device to remove printing forms comprises section for storage intended to store printing form, closing element intended to close section for storage with the possibility of free opening and closing, and facility intended to block closing element in closed condition, at the same time device for removal of printing forms is arranged so that it may be extracted from screen printing machine body.

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EFFECT: provided a high degree of protection against forgery of the information medium.

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