Patent application number | Description | Published |
20110122347 | FILTERS - A method for producing a colour filter, comprising: applying to a substrate at least one diacetylene capable of undergoing a light-activated colour change reaction, and exposing the substrate to light thereby causing the exposed regions of the substrate to change colour. The invention also provides devices comprising coloured filters such as liquid crystal displays. | 05-26-2011 |
20110151380 | DATA STORAGE MEDIUM - A data storage medium comprising recording information in the form of a track of data points, the colour of each data point being selected from at least three different colours, wherein the recording information is disposed on a substrate which comprises a colour forming composition, wherein said colour forming comprises a colour former which is susceptible to changing to at least three different colours when irradiated with a laser, wherein the colour former is a leuco dye, a diacetylene or a carbazole. Methods of forming the data storage medium and methods of reading the medium are also provided. | 06-23-2011 |
20110151384 | Colour Forming Composition - A composition comprising i) a colour forming component which is susceptible to changing colour when irradiated; ii) an amine neutralised alkylaromatic sulphonic acid; and iii) a binder. Methods of marking a substrate comprising incorporating within or applying to a substrate the composition of this invention, and substrates coated with the composition, are also provided. | 06-23-2011 |
20110155815 | MULTI-COLOURED CODES - The invention relates to a method of storing information in or on an article, wherein the article comprises a colour former which is selectively irradiated to produce a multi-coloured code comprising at least three different colours. Also provided by the invention is an article comprising a multi-coloured code comprising at least three different colours, obtainable by the method of the invention. | 06-30-2011 |
20110171438 | Laser Imageable Paper - A method of manufacturing a paper substrate comprising a colour former which is capable undergoing a light activated colour change reaction, wherein the colour former is applied to the paper substrate during the manufacture of said paper substrate, and the colour former is a metal oxyanion or a molecular organic. A paper substrate obtainable by this method is also provided. | 07-14-2011 |
20110183126 | Substrate Marking - The invention relates to a method of marking a substrate comprising treating the substrate with a boron compound and a charrable agent, and, irradiating the areas of the substrate to be marked such that those areas change colour. Marked substrates obtainable by this method are also provided. | 07-28-2011 |
20120021362 | Laser Imaging - A method of forming an image on a substrate, which comprises applying to the substrate an activatable colour forming compound wherein said activatable colour forming compound is initially unreactive but becomes reactive upon activation; activating said colour forming compound in the areas of the substrate where the image is to be formed, and, reacting the activated colour forming compound into its coloured form to produce an image. A substrate imaged using this method is also provided. | 01-26-2012 |
20140099267 | NEAR INFRARED ABSORBERS - An ink formulation having a marking component and a reduced indium tin oxide (r-ITO) is disclosed. The r-ITO in powder form exhibits a lightness (L*), according to the 1976 CIE (L*, a*, b*) space, of not more than 50. | 04-10-2014 |
20140147392 | NOVEL MARKING COMPOUND - Water soluble marking compounds comprising a transition metal oxyanion and at least one ammonium cation, comprising a nitrogen atom at least one further group selected from the group consisting of OH, COOH, NH2, NHC | 05-29-2014 |
20140147775 | NOVEL INK FORMULATION - The disclosed invention relates to the use of molybdenum (VI) peroxo complex containing an amino acid, such as MoO(O | 05-29-2014 |