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  2. Engraving - Wikipedia

    en.wikipedia.org/wiki/Engraving

    Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...

  3. Laser engraving - Wikipedia

    en.wikipedia.org/wiki/Laser_engraving

    Laser marking on stainless steel A laser engraving machine A laser engraver. A laser engraving machine consists of three main parts: a laser, a controller, and a surface. [2] The laser is a drawing tool: the beam emitted from it allows the controller to trace patterns onto the surface.

  4. List of banknote printers - Wikipedia

    en.wikipedia.org/wiki/List_of_banknote_printers

    Central Engraving and Printing Plant (CEPP) 1941 Central Bank of China [1] Turkey: Banknot Matbaasi: 1955 Merkez Bankası [1] UAE: Oumolat Security Printing 2017 Central Bank of UAE [1] Ukraine: NBU Banknote Printing and Minting Works 1994 National Bank of Ukraine [1] United Kingdom: De La Rue plc 1813 (1860) None (Privately held company) [1 ...

  5. List of equipment of the Nigerian Army - Wikipedia

    en.wikipedia.org/wiki/List_of_equipment_of_the...

    Nigeria: Local variant designated NR-1. [17] [18] [19] Beretta BM 59: Battle rifle Italy Nigeria: Produced locally under licence by DICON. Machine guns; M2 Browning [2] Heavy machine gun United States: DShK: Heavy machine gun Soviet Union: FN MAG: General-purpose machine gun Belgium: RPK: Light machine gun Soviet Union: Sniper rifles; Alex .338 ...

  6. Rotogravure - Wikipedia

    en.wikipedia.org/wiki/Rotogravure

    Gravure cylinders are usually made of steel and plated with copper, though other materials, e.g. ceramics can also be used. The desired pattern is achieved by engraving with a laser or a diamond tool, or by chemical etching. If the cylinder is chemically etched, a resist (in the form of a negative image) is transferred to the cylinder before ...

  7. Photoengraving - Wikipedia

    en.wikipedia.org/wiki/Photoengraving

    A print made in 1907 from a photoengraved plate. It reproduces a sketch of Parga's castle made by Ludwig Salvator.. Photoengraving is a process that uses a light-sensitive photoresist applied to the surface to be engraved to create a mask that protects some areas during a subsequent operation which etches, dissolves, or otherwise removes some or all of the material from the unshielded areas of ...

  8. Chemical milling - Wikipedia

    en.wikipedia.org/wiki/Chemical_milling

    A high-purity (≥99.9998%) aluminium bar that has been etched to reveal the component crystallites. Chemical milling or industrial etching is the subtractive manufacturing process of using baths of temperature-regulated etching chemicals to remove material to create an object with the desired shape.

  9. Photogravure - Wikipedia

    en.wikipedia.org/wiki/Photogravure

    He worked on his photomechanical process in the 1850s and patented it in 1852 ('photographic engraving') and 1858 ('photoglyphic engraving'). [3] Photogravure in its mature form was developed in 1878 by Czech painter Karel Klíč, who built on Talbot's research. [4]:4 This process, the one still in use today, is called the Talbot-Klič process. [2]

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