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Graphotype Class 6380 Graphotype Model 6383 plate. Graphotype was a brand name used by the Addressograph-Multigraph Company for its range of metal plate embossing machines. [1] The machines were originally used to create address plates for the Addressograph system and mark military style identity tags and other industrial nameplates.
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 ...
The machines for laser engraving and laser marking are the same, so the two terms are sometimes confused by those without relevant expertise. The impact of laser marking has been more pronounced for specially designed "laserable" materials and also for some paints. These include laser-sensitive polymers and novel metal alloys. [2]
In 1878, Jeffrey partnered with F.C. Sessions to purchase the patent and other rights to the coal cutting machine from Lechner, and they formed the Lechner Mining Machine Company to produce it. [3] The Lechner machine used a chain drive for the coal cutting heads and was the first practical coal cutter.
1837 lithographic portrait of Moritz von Jacobi (1801–1874), who invented electrotyping in 1838.. At present, most sources credit Moritz Hermann Jacobi with the invention of "galvanoplasty" or electrotyping in 1838; Jacobi was a Prussian scientist who was working in St. Petersburg, Russia.
Rotary letterpress machines are still used on a wide scale for printing self-adhesive and non-self-adhesive labels, tube laminate, cup stock, etc. The printing quality achieved by a modern letterpress machine with UV curing is on par with flexo presses. It is more convenient and user friendly than a flexo press.
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