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Flexography (often abbreviated to flexo) is a form of printing process which utilizes a flexible relief plate. It is essentially a modern version of letterpress, evolved with high speed rotary functionality, which can be used for printing on almost any type of substrate, including plastic, metallic films, cellophane, and paper.
The main types of flexographic ink are water based, [2] solvent and UV curable. [3] The printing surface (substrate type) dictates what ink type it is advisable to use.Each type of ink has its advantages and disadvantages, therefore the type of ink used in printing is determined by factors such as price, speed, and the use of the packaging (food, cleaning, or shopping bags).
An anilox roll. In printing, anilox is a method used to provide a measured amount of ink to a flexographic (flexo) printing plate. [1] An anilox roll is a hard cylinder, usually constructed of a steel or aluminum core which is coated by an industrial ceramic, typically chromium(III) oxide powder, whose surface is engraved with millions of very fine dimples, known as anilox cells.
From a South African Bibliography to the Year 1925, Cape Town 1987, p131; Conradie, Elisabeth, Hollandse skrywers in Suidafrika, pp. 222ff. is cited by Hoge, J; Smith, Anna H, The spread of printing. Eastern hemisphere, South Africa, Amsterdam, Vagendt, 1971 is mentioned in Lewin Robinson, AM; Alan Charles Gore Lloyd (1914).
With its fixed type font and paper-tape recording medium, the Flexowriter had difficulty competing with these machines, although some Flexowriter documentation emphasized the fact that, unlike IBM's MT/ST tapes, Flexowriter users could cut and splice paper tapes, particularly if they could recognize some of the common codes such as carriage return.
The doctor blade is a relatively cheap and disposable consumable, while the gravure cylinder or flexo anilox is a more expensive component of the press. Typical materials for the blade are steel or polymer: [ 3 ] gravure cylinders are normally hard-chrome plated [ 4 ] and flexo aniloxes may be chromed or ceramic.