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THE DIFFERENT PRINTING PROCESSES ON WWW.POSTERISSIM.COM
Below you will find the different printing processes for the posters that you can find on www.posterissim.com
Lithography was invented by the German playwright Aloys Senefelder in 1796 and had its heyday in the 19th century. It is a printing technique that allows the creation and reproduction in several copies of a drawing executed with ink or pencil on a limestone and is based on the principle of repulsion of water and fat. This process makes it possible to execute high quality works in quantity. Faster and cheaper than engraving, lithography has been used very often for the reproduction of commercial documents.
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Screen printing is a printing technique that uses stencils (originally silk screens) interposed between the ink and the support (paper, cardboard, textile, metal, glass...). It allows the representation of very detailed independent graphics and was popularized by Andy Warhol.
Offset is a printing process that can be considered an improvement on its ancestor, lithography: the lithographic stone is replaced by a layer (or cylinder). Currently the major process of professional printing, offset printing, makes it possible to cover a relatively wide range of print runs (beyond a few hundred thousand copies, rotogravure is preferred). This printing process provides quality products at a relatively low cost. It has many other advantages such as quick start-up, stable inking, fast drying, etc... Offset in video HERE.
Rotogravure is a technique born in the 1820s from the research of Joseph Nicéphore Niépce, particularly adapted to very long print runs where a high quality of reproduction is required. A process of intaglio printing, rotogravure allows the transfer of an image on a copper plate thanks to a photosensitive gelatine. The screen is not visible, unlike halftone printing. The blacks are very deep where the ink layer is thick, while it is very thin in the lighter areas.
Digigraphy is a process for reproducing works of art created digitally on large-format inkjet printers. Label created by Epson in 2003, it concerns the reproduction of any type of artistic creation: photography, painting, collage, drawing, watercolour, digital creation... A Digigraphie is necessarily a limited edition print: it must bear a number indicating the total number of the series and the number of the print, as well as the handwritten signature of the artist and an official stamp.
The giclée is a very faithful reproduction process on inkjet printers on paper or canvas that allows a reproduction of the image in very high definition on large format digital printers. Unlike lithography, where all proofs could be considered as originals, with giclees, all proofs become reproductions.
The difference between lithography and screen printing: Lithographs and serigraphs are both flat prints. Lithography reproduces a line executed on a limestone, whereas silkscreen printing is a technique that uses silk screens between the ink and the support.
The difference between lithography and offset: Offset is one of the printing processes known as "direct", which consists of transferring the entire print directly onto the substrate. Lithography involves spreading ink on a surface, with dry and wet areas, and only the ink spread on the dry area is transferred to the substrate.
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