BANK OF CANADA Patent applications |
Patent application number | Title | Published |
20120091701 | CLEAR MAGNETIC INTAGLIO PRINTING INK - The invention discloses an ink for the engraved steel die printing process, having a viscosity at 40° C. between 3 Pa.s to 15 Pa.s, preferably 5 to 10 Pa.s, and comprising a polymeric organic binder and magnetic pigment particle, characterized in that said magnetic pigment particles comprises a magnetic core material which is surrounded by at least one layer of another material. The surrounding layers, single or in combination, confer the pigment particle particular optical properties in the visible and/or in the near IR, chosen from high specular or diffuse reflectance, spectrally selective absorption or reflection, and angle-dependent absorption or reflection, and allow for the formulation of inks having a large gamut of color and other optical functionalities. | 04-19-2012 |
20100194093 | SECURITY DEVICES, THEIR PRODUCTION AND USE - Security documents, such as passports, bank notes and credit cards, often incorporate security devices that are difficult to replicate by conventional printing or copying techniques. Disclosed herein are security devices and methods for their production. In selected embodiments, the security devices may be used with polymer core materials in such a way that they simulate the appearance of known security devices more traditionally used with paper core materials. | 08-05-2010 |
20100140916 | INK OR TONER COMPOSITIONS, METHODS OF USE, AND PRODUCTS DERIVED THEREFROM - Magnetic ink and toner compositions traditionally comprise magnetic materials in fine particulate form, either as a dry composition or a liquid suspension. Often such materials are black or dark in colour. Disclosed herein are particles compositions suitable for use as inks or toners, that exhibit desirable magnetic properties, and furthermore which include particles coated so they appear white substantially white, or coloured. Such compositions present new opportunities for the production of corresponding magnetic layers, when the compositions are deposited in an appropriate manner to a substrate. | 06-10-2010 |