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8168355 Method of imaging in crystalline colloidal arrays  
A method of producing an image in the crystalline colloidal array is disclosed. The method includes providing an ordered array of particles received within a curable matrix composition; curing a...
7968173 Sheet with a copy-resistant region of reduced opacity  
The present invention relates to printable security paper that includes a region capable of receiving printed indicia on the front side and on the reverse side which are observable in reflected...
7960084 Method of preparing information recording medium  
An information recording medium includes a transparent recording member and a substantially non-transparent member. The transparent recording member has at least one transparent area and a...
7906198 Document containing security images  
A document containing security images which enable original documents to be distinguished from copies of the originals. The document 60 bears an image 63 containing a latent image 68. Latent image...
7897307 Marking material with birefringent nanoparticles  
Disclosed is a birefringent marking material comprising a vehicle for the marking material and birefringent nanoparticles having an average particle size of less than about 700 nm. The birefringent...
7883762 Double sided printed security document  
The invention concerns a security document comprising, as security element against recto/verso copying, indicia present on both sides and capable of being viewed under reflected lighting and...
7875338 Security protection of documents or products by affixing an optically active component for verification of authenticity  
A component for authenticating a document or a product including a plastic film having at least one embossed surface, a metallization layer at least partially covering the embossed surface, the...
7864290 Film security code  
A system and method for coding an intermediate film element, e.g., an interpositive or an internegative, in an effective manner while maintaining the integrity of the film element. A first coat of...
7648842 Security paper authentication system with dual instant color  
The present invention relates to a unique dual color security paper authentication system. The authenticating system comprises the combination of a security paper together with a coordinated...
7576898 Method for using a deep image hologram as a security device and a deep image hologram  
A holographic optical element (HOE) that includes a deep image hologram and a method for using this HOE as a security device are described. The deep image hologram is viewable with a collimated or...
7514188 Process for providing marking on security papers  
A process for providing a security paper, in particular a banknote, with a coloured marking, comprising providing a photosensitive preparation on a portion of said document and submitting at least...
7429413 Nonmetallic label with metallic appearance  
In one embodiment, a nonmetallic, tamper-indicating, multi-layer label with a metallic appearance is described. The label comprises a pearlescent layer, a film layer, a patterned release layer, and...
7326504 Imaged anti-copy film  
An anti-copy film is disclosed. The film has a light transmissive imageable substrate having opposing first and second surfaces. Each surface has an image receptive coating. Complementary positive...
7270918 Printing system, process, and product with microprinting  
The invention relates to printing of documents, for example bank checks. According to the various aspects of the invention, a printing system, process and product with microprinting are provided....
7241537 Method for producing an exposed substrate  
Method for producing an exposed substrate, which has at least two different image areas. The substrate is provided with at least two photoresist layers, which are adjusted to the type of image...
7220524 System and method for producing secure toner-based images  
A system and a method for printing a secure document that is difficult to forge and readily easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface...
7220525 Secure imaging toner and methods of forming and using the same  
A toner for printing documents that are difficult to chemically or physically forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner...
7215450 Optically variable element  
The present invention relates to an optically variable element having surface portions with achromatic surface structures and different scatter, diffraction and reflection characteristics. The...
7199911 Optical structure  
An optical device for security and anti-counterfeit applications has a holographic diffractive structure that includes a discrete region that in response to white light illumination generates a...
7154170 Semiconductor package security features using thermochromatic inks and three-dimensional identification coding  
Numerous embodiments of an apparatus and method for generating an identification feature are described. In one embodiment of the present invention, portions of an identification character printed...
7108286 Antifalsification paper and other antifalsification items  
The present invention describes security paper and security items in general containing at least one security element having at least one photoluminescent segment characterized by a linearly...
7063924 Security device with patterned metallic reflection  
The invention relates to an image device comprising a base material having a pattern of diffuse and specular metallic reflectivity and overlaying said pattern an image.
7063925 Expansion of color gamut for silver halide media  
The invention relates to a photographic article comprising a base material carrying at least one layer comprising a photographic image formed by combination of dyes formed from couplers wherein...
6998211 System for producing secure toner-based images and methods of forming and using the same  
A system and method for printing documents that are difficult to forge and that are easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface of a...
6991883 Toner for producing secure images and methods of forming and using the same  
A toner for printing documents that are difficult to forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for...
6987590 Patterned reflective optical structures  
An optical structure includes a light transmissive substrate having a surface relief pattern applied thereon, such as a hologram. A patterned layer of a reflective material is applied over portions...
6927885 Label with a diffractive bar code and reading arrangement for such labels  
A label (1) made from a layer composite (15) includes at least one machine-readable diffractive bar code (3) consisting of narrow rectangular fields (4) occupied by the optically active structures...
6882452 Patterned deposition of refractive layers for high security holograms  
This invention relates to the production of holographic devices. The holographic devices include a transparent high refractive coating that is applied selectively to provide additional security and...
6865001 System and method for encoding and decoding an image or document and document encoded thereby  
Holographic and diffractive security devices and documents carrying security devices as well as system, apparatus, and method for making and using security devices. Security devices provide at...
6835326 Fluorescent ink compositions comprising functionalized fluorescent nanocrystals  
A fluorescent ink composition comprising functionalized fluorescent nanocrystals, an aqueous-based ink carrier comprising water or a water-based solution, and a binder. Also provided are methods of...
6749936 Achromatic multilayer diffractive pigments and foils  
Achromatic multilayer diffractive pigment flakes and foils are provided having diffractive structures thereon. The diffractive pigment flakes can have a symmetrical stacked coating structure on...
6692030 Security document with nano-pattern  
A counterfeit-resistant document comprises a substrate and a nano-pattern of nano-structures disposed on the substrate, wherein the nano-pattern is configured for forming a latent message (e.g., a...
6665406 Variable density verification  
A counterfeit-resistant document comprises a contrasting layer and a dynamic camouflaging layer. The contrasting layer is highly contrastive and includes a latent message that can be reproduced...
6552102 Pigment flakes  
Described are chiral liquid crystalline polymer materials and polymerizable compounds used for preparing them. The polymer materials can serve as a carrier material or are coated onto a carrier...
6444377 Security features  
The invention relates to improvements in security features in paper and other substrates and in particular to an activatable feature to warn of tampering. The invention further relates to a...
6432602 Transfer printing process  
A transfer printing process is provided which both uses conventional equipment, and which can be used to add second level printing to an existing document such as a passport. All of the information...
6413687 Transfer foil and image recording material, and method for preparing image recording material  
A transfer foil for image transfer comprising a support, a releasing layer and a component layer is disclosed. The releasing layer contains inorganic or organic fine particles and 1<(average...
6372394 Laser marking of articles  
A method of marking or forming a transparent window in an article 6, such as a security document, is provided in which areas of opacifying layers of printed ink 8, 10 on opposite surfaces of a...
6280891 Multi-layer assembly and method for marking articles and resulting marked articles  
Methods and adhesive labels useful in marking products or documents by applying these to substrates. A mark such as a barcode, photograph or characters are formed directly on the substrate and the...
6221545 Adhesives for preparing a multilayer laminate featuring an ink-bearing surface bonded to a second surface  
An adhesive composition that includes the reaction product of (a) a polyester-based polyurethane; (b) an epoxy resin; (c) an epoxy-functional silane; and (d) an isocyanate-functional compound, and...
6187129 Curable topcoat composition and methods for use  
A cutable topcoat composition and apparatus useful for preparing stable data carrying devices, such as multi-layered laminates, and methods for preparing and using the composition. The composition...
6171734 Security printed document to prevent unauthorized copying  
A paper substrate is laminated with a metalized layer forming a mirrored surface. A partially transparent black diffraction grating is applied by stochastic screening to the mirrored surface. The...
6127050 Archival imaging medium and method therefor  
An archival medium, such as a compact disc, is made of a metal such as aluminum which is mechanically gained with particulate material under conditions that embed particulate material into the...
6033832 Process for the production of a photographic image  
A process for the production of a photographic image, in particular an ID card, using a color photographic silver halide material on a reflective support having a zone I in which information is...
6001516 Copy restrictive color-negative photographic print media  
A color-negative photographic print medium for restricting the copying of an image in the medium utilizing a pattern of removable color-subtractive microdots depth-wise positioned anywhere within a...
5991078 Display medium employing diffraction grating and method of producing diffraction grating assembly  
A display medium employing a diffraction grating to define and represent a display pattern by the contour thereof, which enables the display pattern to move smoothly as the visual point moves and...
5981113 Curable ink composition and imaged retroreflective article therefrom  
Radiation curable ink compositions and coating compositions contain an aliphatic (meth)acrylate functional macromonomer, a reactive acrylate monomer, and a photoinitiator. Ink compositions also...
5972546 Secure photographic method and apparatus  
The application of Lippmann photographs as a unique security device on security documents, such as, e.g. identity cards, passports, credit cards is presented. The recording of such photographs...
5958528 Data carrier and method for producting it  
The invention relates to a data carrier, such as an identity card, credit card or the like, with at least one plastic layer having first diffusely light-scattering properties at least in a partial...
5830561 Information bearing card  
A card, such as an ID card, is composed of the following layers: at least one core layer containing at least one first core component layer of a first composition, consisting of a polypropylene...
Matches 1 - 50 out of 126 1 2 3 >