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A platen (or platten) is a platform with a variety of roles in printing or manufacturing. It can be a flat metal (or earlier, wooden ) plate pressed against a medium (such as paper ) to cause an impression in letterpress printing . [ 1 ]
Screen printing is a printing technique where a mesh is used to transfer ink (or dye) onto a substrate, except in areas made impermeable to the ink by a blocking stencil.A blade or squeegee is moved across the screen in a "flood stroke" to fill the open mesh apertures with ink, and a reverse stroke then causes the screen to touch the substrate momentarily along a line of contact.
The printing press is most famous for its windmill-like automatic paper feed mechanism. There are two blades that rotate from the paper feed, where it picks up a sheet of paper; to the platen, where the printing impression is made; to the delivery rack, where the paper is released; followed by the blade pointing straight up ready to start the next cycle.
Letterpress printing: platen 10 MPa 50–150 Pa·s 0.5–1.5 μm slow drying Screen-printing: pressing ink through holes in screen 1000–10,000 mPa·s [59] < 12 μm versatile method, low quality Electrophotography: electrostatics: 5–10 μm thick ink Liquid electrophotography image formation by Electrostatics and transfer while fixing
The general form of letterpress printing with a platen press shows the relationship between the forme (the type), the pressure, the ink, and the paper. Letterpress printing is a technique of relief printing for producing many copies by repeated direct impression of an inked, raised surface against individual sheets of paper or a continuous roll ...
Wide-format printers usually employ some variant of inkjet or toner-based technology to produce the printed image; and are more economical than other print methods such as screen printing for most short-run (low quantity) print projects, depending on print size, run length (quantity of prints per single original), and the type of substrate or ...
The Institute contains all the original printing presses and equipment shipped from Tyler's workshops in America, including a 100 tonne hydraulic platen press. [12] In Canberra, Australia, the National Gallery of Australia holds a collection of over 7000 Tyler works, as well as an archive of related film, sound and photographic material.
Early rotary newspaper printing press in Bristol, 1858. William Nicholson filed a 1790 patent for a rotary press. The rotary press itself is an evolution of the cylinder press, also patented by William Nicholson, invented by Beaucher of France in the 1780s and by Friedrich Koenig in the early 19th century.
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