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The electric pen was the key component of a complete duplicating system, which included the pen, a cast-iron holder with a wooden insert, a wet cell battery on a cast-iron stand, and a cast-iron flatbed duplicating press with an ink roller.
William B. Purvis (12 August 1838 – 10 August 1914) [1] was an African-American inventor and businessman who received multiple patents in the late 19th-century. His inventions included improvements on paper bags, an updated fountain pen design, improvement to the hand stamp, and a close-conduit electric railway system.
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 ...
Vector engraving follows the line and curve of the pattern to be engraved, much like a pen-based plotter draws by constructing line segments from a description of the outlines of a pattern. Much early engraving of signs and plaques (laser or otherwise) used pre-stored font outlines so that letters, numbers or even logos could be scaled to size ...
The active pen marketplace has long been dominated by N-trig [2] and Wacom, [3] but newer firms Atmel [4] and Synaptics [5] also offer active pen designs. An active pen is generally larger and has more features than a stylus. Digital pens typically contain internal electronics and have features such as touch sensitivity, input buttons, memory ...
A smart pen has the same basic characteristics as a digital pen, but also has other features like voice recording or a text scanner. A smart pen is generally larger and has more features than an active pen. Digital pens typically contain internal electronics and have features such as touch sensitivity, input buttons, memory for storing ...
Graver may refer to: Burin (engraving) (French burin, "cold chisel"), a tool used in the art of engraving; Graver (surname), an older English name, still common;
Staedtler technical pens Staedtler technical pen divided in parts in comparison with 1 cent euro coin Macro image of a 0.7 mm Rotring Rapidograph nib showing the flow control wire. A technical pen is a specialized instrument used by an engineer, architect, or drafter to make lines of constant width for architectural, engineering, or technical ...
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