CANADIAN BANK NOTE COMPANY, LIMITED Patent applications |
Patent application number | Title | Published |
20140126766 | ENCODING HIDDEN INFORMATION IN SPATIAL LINE FREQUENCIES - A method of encoding a hidden image in high frequency spatial frequencies of a line pattern of a host image. A set of host image spatial frequencies is generated based on a predefined mapping of a domain of a set of representative scalar values of the hidden image mage and a domain of the host image spatial frequencies. The line pattern of the host image is generated based on the set of host image spatial frequencies. The host image may be composed of tiles containing parallel line segments, with each tile encoding a corresponding one of the scalar values. The host image may be composed of a stochastic line pattern generated from a white noise image convolved with a space variable kernel based on the predefined domain mapping. The hidden image may be decoded algorithmically or optically in a single step. | 05-08-2014 |
20130323432 | COMPOSITION FOR PRINTING TACTILE FEATURES ON A SECURITY DOCUMENT - Improved ultraviolet light-curable compositions are provided for printing onto a security document substrate in a predetermined pattern to make tactile features for use by people with impaired vision to, for example, recognize the denominations of banknotes. The improved compositions substantially comprise an acidic trifunctional acrylate ester, preferably in an amount of 60-80 wt %, and include urethane acrylate and effective amounts of flexibilizer (e.g. low viscosity aromatic monoacrylate having an elongation parameter of about 200), photoinitiator and a rheological additive (e.g. silica). The composition unexpectedly provides flexibility and is particular useful for printing tactile features in the form of relatively large continuous graphical patterns. | 12-05-2013 |
20130171423 | METHOD FOR PRINTING AN IMAGE ONTO A THERMOPLASTIC SUBSTRATE, PER-FORMING PLATE USED THEREFOR AND SECURITY INSTRUMENT MADE THEREFROM - A method is provided by the invention for printing surface applied images to a thermoplastic substrate to provide improved durability to the printed image. A preforming plate (e.g. lamination plate) for making a thermoplastic substrate used by the method and a security instrument made by the method are also provided by the invention. A thermoplastic substrate comprises in a predetermined area a pattern, preferably a cell pattern, of recessed image receiving surfaces below a nominal surface of the thermoplastic substrate and a pattern of bridges separating the recessed image receiving surfaces, the depths of the recessed image receiving surfaces and the areas of the bridges separating the recessed image receiving surfaces, relative to the areas of the recessed image receiving surfaces, chosen to provide durability to the image after the image has been printed onto the predetermined area. The image may be printed by ink jet printing. To additionally provide security features to the security instrument, latent and hidden images may be formed by latent image recesses and hidden image recesses, respectively, below the nominal surface. | 07-04-2013 |
20130017353 | Method for Making Laminate Sheets with Flexible Hinges for Binding into Security DocumentsAANM Gurberg; Barry DavidAACI OrleansAACO CAAAGP Gurberg; Barry David Orleans CAAANM Forest; Mark WilliamAACI OttawaAACO CAAAGP Forest; Mark William Ottawa CAAANM Patterson; Ianthe E.M.AACI OttawaAACO CAAAGP Patterson; Ianthe E.M. Ottawa CAAANM Buter; Dennis CurtAACI GreelyAACO CAAAGP Buter; Dennis Curt Greely CA - A hard laminate sheet with flexible hinge for binding into a security document is provided. Hard synthetic material layers are overlaid, sandwiching a flexible material layer having a hinge portion configured for separation from the hard synthetic material layers, and an affixing portion configured to become affixed to the hard synthetic material layers, upon lamination of the overlaid layers. The overlaid layers are laminated to form a laminate sheet having an embedded hinge affixed to the hard synthetic material layers. Score cuttings are made along a score line coinciding with an inner hinge edge on a hinge side which is then flexed until the hard synthetic material layers break along the inner hinge edge. Residual laminate layers are separated from the hinge side to expose the hinge portion of the flexible material. | 01-17-2013 |
20110250410 | METHOD AND COMPOSITION FOR PRINTING TACTILE MARKS AND SECURITY DOCUMENT FORMED THEREFROM - Ultraviolet light-curable deposits are printed onto a substrate in a predetermined pattern to make tactile marks (e.g. Braille-like resin dots) for use by people with impaired vision to, for example, recognize the denominations of banknotes. The deposit demonstrates high adhesion due to: (1) presence of 20-80% (wt.) of a low viscosity acrylate component to provide a substrate-penetrating property; and, (2) 2-30% (wt.) of an adhesion-promoting acid acrylate. The deposit material further includes 1-30% (wt.) of urethane acrylate, 1-30% by weight of reactive diluent, photoinitiator and 1-10% (wt.) of rheological adsorbing additive. Optimally, the adhesion promoter is added after the other components have been mixed with the rheological additive. The printing step may be followed by heating before the curing step to increase penetration of the ink into the substrate. The deposit may comprise a taggant for use as a security feature. | 10-13-2011 |