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  2. Security printing - Wikipedia

    en.wikipedia.org/wiki/Security_printing

    A hologram may be embedded either via hot-stamping foil, wherein an extremely thin layer of only a few micrometers of depth is bonded into the paper or a plastic substrate by means of a hot-melt adhesive (called a size coat) and heat from a metal die, or it may be directly embossed as holographic paper, or onto the laminate of a card itself ...

  3. Security hologram - Wikipedia

    en.wikipedia.org/wiki/Security_hologram

    A hologram label on a paper box for security Security holograms are labels with a hologram printed onto it for sale security reasons. It is argued by the International Hologram Manufacturers Association that holograms on security labels are difficult to forge because they are replicated from a master hologram which requires expensive ...

  4. Microhologram - Wikipedia

    en.wikipedia.org/wiki/Microhologram

    Connecting of a hologram with the protected item is a critical task, and there are many specific technologies for it. Microholograms enable to protect material (substrate)l for a production of documents, stamps, products, etc. Tiny metallic particles of the size from 40 micrometers to half a millimeter are blended into plastic, paper, foil, etc.

  5. Security paper - Wikipedia

    en.wikipedia.org/wiki/Security_paper

    Barack Obama's birth certificate on security paper.. Security paper is a paper used in security printing that incorporates features that can be used to identify or authenticate a document as original, e.g., watermarks or invisible fibres in paper, or features that demonstrate tamper evidence when fraud is attempted, e.g., to remove or alter print such as amounts or signatures on a cheque.

  6. Holography - Wikipedia

    en.wikipedia.org/wiki/Holography

    Two photographs of a single hologram taken from different viewpoints. Holography is a technique that enables a wavefront to be recorded and later reconstructed. It is best known as a method of generating three-dimensional images, and has a wide range of other uses, including data storage, microscopy, and interferometry.

  7. Hot stamping - Wikipedia

    en.wikipedia.org/wiki/Hot_stamping

    Holographic foil paper includes a 3-dimensional image to provide a distinctive appearance to specific areas of a digitally printed application. Printing is often done on leather or paper. Different hot stamping machines serve different purposes, but the most common hot stamping machines are simple up-and-down presses.

  8. Computer-generated holography - Wikipedia

    en.wikipedia.org/wiki/Computer-generated_holography

    Computer-generated holography (CGH) is a technique that uses computer algorithms to generate holograms.It involves generating holographic interference patterns.A computer-generated hologram can be displayed on a dynamic holographic display, or it can be printed onto a mask or film using lithography. [1]

  9. Canadian five-dollar note - Wikipedia

    en.wikipedia.org/wiki/Canadian_five-dollar_note

    Instead, on 15 November 2006, the Bank of Canada released an updated version of the five-dollar note (issue of 2006) with updated security features, including a holographic stripe found in the rest of the series, and a watermark of Laurier that appears when held to the light. [5]

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