Patent application number | Description | Published |
20080311524 | Method For Making Negative-Working Heat-Sensitive Lithographic Printing Plate Precursor - A method for making a negative-working heat-sensitive lithographic printing plate precursor includes the steps pf:
| 12-18-2008 |
20100040976 | HEAT-SENSITIVE IMAGING ELEMENT - A heat-sensitive imaging element includes an IR dye, and more particularly a heat-sensitive lithographic printing plate precursor includes the IR dye. A method for making the lithographic printing plate produces a print-out image of high contrast upon exposure to IR-radiation or heating. | 02-18-2010 |
20100104980 | LITHOGRAPHIC PRINTING PLATE PRECURSOR - A lithographic printing plate precursor comprising an image-recording layer, said image-recording layer being photo-polymerizable upon exposure to actinic light and containing a mixture of sensitizers characterized in that said mixture of sensitizers has in 1-methoxy-2-propanol at 80° C. a solubility of at least 30 wt. %. and preferably a MetaStable Zone Width (MSZW) of at least 8.5° C., said MSZW measured at a cooling and heating rate of 0.2° C./minute. | 04-29-2010 |
20100159388 | LITHOGRAPHIC PRINTING PLATE PRECURSOR - A lithographic printing plate precursor comprising an image-recording layer, said image-recording layer being photopolymerizable upon exposure to light having a wavelength of from 300 to 500 nm and containing a mixture of sensitizers. | 06-24-2010 |
20100190105 | LITHOGRAPHIC PRINTING PLATE PRECURSOR - A lithographic printing plate precursor comprising an image-recording layer, said image-recording layer being photopolymerizable upon exposure to light having a wavelength of from 300 to 500 nm and containing a mixture of sensitizers. | 07-29-2010 |
20100221662 | HEAT-SENSITIVE IMAGING ELEMENT - A heat-sensitive imaging element includes an IR dye having a structure according to Formula I, | 09-02-2010 |
20100274023 | NOVEL INTERMEDIATE COMPOUNDS FOR THE PREPARATION OF MESO-SUBSTITUTED CYANINE, MEROCYANINE AND OXONOLE DYES - The present invention provides new intermediate compounds enabling the preparation of N-meso substituted cyanine, merocyanine or oxonole dyes wherein the N-meso substituent comprises electron withdrawing groups and wherein such N-meso substituents are introduced at the intermediate level. These intermediates enable the formation of dyes having in the meso-position N-substituents comprising electron withdrawing groups without the need for further derivatization of the meso-substituent at the dye level. | 10-28-2010 |
20110165518 | LITHOGRAPHIC PRINTING PLATE PRECURSOR - A lithographic printing plate precursor includes a coating provided on a support having a hydrophilic surface, the coating containing thermoplastic polymer particles and an infrared radiation absorbing dye characterized in that the dye contains a substituent selected from bromo and iodo. | 07-07-2011 |
20110287364 | LITHOGRAPHIC PRINTING PLATE PRECURSOR - A lithographic printing plate precursor comprising a coating provided on a support having a hydrophilic surface, the coating containing thermoplastic polymer particles and an IR-dye characterized in that the IR-dye contains a structural element according to Formula I | 11-24-2011 |
20120034565 | Lithographic printing plate precursor - A lithographic printing plate precursor comprising a coating provided on a support having a hydrophilic surface, the coating containing thermoplastic polymer particles and an infrared radiation absorbing dye characterized in that the coating further comprises a phenolic stabilizer. | 02-09-2012 |
20120208126 | NOVEL CYANINE DYES AND LITHOGRAPHIC PRINTING PLATE PRECURSORS COMPRISING SUCH DYES - A lithographic printing plate precursor includes a cyanine dye, characterized in that the cyanine dye includes two different chromophoric groups, a chromophoric group that has its main absorption in the infrared region and another chromophoric group that has its main absorption in the visible light region. The cyanine dye has preferably a structure according to Formula I: | 08-16-2012 |
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 |
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 |