Patent application number | Description | Published |
20120217736 | Laser Markable Security Film - A security film including, in order, a transparent biaxially oriented polyethylene terephthalate support ( | 08-30-2012 |
20120223516 | Security Document with Security Feature on Edge - A security document precursor including one or more lamellae provided with two or more holes near a perimeter edge surface of the precursor, wherein the holes perforate the largest surface of the one or more lamellae, and wherein at least one of the holes is filled with a coloured material which differs in colour from at least one of the one or more lamellae, such that the coloured material is visible from a direction perpendicular on the perimeter edge surface; wherein at least one of the one or more lamellae is transparent or translucent: or wherein at least one of the one or more lamellae is opaque and the opaque part of the at least one of the one or more lamellae between the perimeter edge and the hole filled with a coloured material has been removed. A security document and a method of preparing the security document precursor are also disclosed. | 09-06-2012 |
20120231240 | Laser Markable Security Film - A security film including a support ( | 09-13-2012 |
20130008965 | PET-C BASED SECURITY LAMINATES AND DOCUMENTS - A method of preparing a security laminate including the steps of: a) providing a polyethylene terephthalate substrate ( | 01-10-2013 |
20130229008 | COLOUR LASER MARKING METHODS OF SECURITY DOCUMENTS - A security document precursor including, in order: a) at least one transparent biaxially stretched polyester foil; b) one colourless colour forming layer containing at least an infrared absorber, a colourless dye-precursor and a polymeric binder; and c) a polymeric support; wherein the polymeric binder is copolymer including at least 90 wt % of a chlorinated ethylene and 1 wt % to 10 wt % of vinyl acetate both based on the total weight of the binder. Methods for making the security document precursor are also disclosed. | 09-05-2013 |
20130230704 | COLOUR LASER MARKING OF ARTICLES AND SECURITY DOCUMENT PRECURSORS - A method of colour laser marking an article having a polymeric foil with at least one colourless layer containing an infrared absorber, a polymeric binder and a colour forming compound; including the steps of:—laser marking the colourless layer with an infrared laser using a first laser operation mode to generate a blue or cyan colour; and—laser marking the same colourless layer with an infrared laser using a second laser operation mode to generate a black colour, wherein the first laser operation mode applies less energy to the colourless layer than the second laser operation mode. Also disclosed is an article, such as a security document, including a polymeric foil and a colourless layer containing laser marked graphical data having a blue or cyan colour and laser marked information having a black colour | 09-05-2013 |
20130233932 | SECURITY DOCUMENTS AND COLOUR LASER MARKING METHODS FOR SECURING THEM - A security document precursor including, in order, at least: a) a transparent biaxially stretched polyethylene terephthalate foil; b) a colourless colour forming layer containing at least an infrared absorber, a colour forming component and a polymeric binder; and c) a polymeric support; wherein the colourless colour forming layer contains at least one component forming a compound having a melting temperature of less than 20° C. upon laser marking the colourless colour forming layer with an infrared laser. Methods for securing a security document using the security document precursor are also disclosed. | 09-12-2013 |
20130235145 | COLOUR LASER MARKING METHODS OF SECURITY DOCUMENT PRECURSORS - A method of colour laser marking a security document precursor including, in order, at least: a) a polymeric foil; b) at least one colourless colour forming layer for generating a colour different from black containing at least an infrared absorber, a colour forming compound and a polymeric binder; and c) either a lasermarkable polymeric support or a lasermarkable layer for generating a black colour; comprising the steps of: (1) laser marking a colour different from black in the colourless colour forming layer with an infrared laser used in continuous wave mode; and (2) laser marking a black colour by carbonization in the lasermarkable polymeric support or the lasermarkable layer with the same infrared laser used in a pulsed mode; and wherein at least one of the polymeric foil and the lasermarkable polymeric support is transparent for the infrared light of the infrared laser. | 09-12-2013 |
20140099482 | COLOUR LASER MARKING OF ARTICLES AND SECURITY DOCUMENTS - A method for preparing a colour laser marked article comprising the steps of: a) infrared laser marking a security element including a polymeric support and a colour forming layer comprising a colour forming compound, an infrared dye and a polymeric binder comprising vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the binder; and b) exposing the laser marked security element with light having a wavelength higher than 440 nm. The light exposure of step b) hinders the falsification of an issued security document without significant increase of background density. | 04-10-2014 |
20140193638 | PET-C Based Security Laminates and Documents - A security laminate ( | 07-10-2014 |
20140232810 | Colour Laser Marking Methods of Security Document Precursors - A method of colour laser marking a security document precursor including at least: a transparent biaxially stretched polyethylene terephthalate foil; at least one colourless colour forming layer for generating a colour different from black containing at least an infrared absorber a colour forming compound and a polymeric binder; and a laser markable polymeric support or a laser markable layer for generating a black colour; comprising the steps of:
| 08-21-2014 |