All the stamps 0,50F Marianne de Béquet produced in form of sheets were made using the line-engraving process (cf. the article Genesis of the (...)
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Printing principle on a TD3 press
Three-colour intaglio rotary printing machines (TD3 presses), developed by Louis Chambon in 1929, allow to (...)
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Introduction
In this article, we will first explain the printing principle on a TD6 press and then the way sheets of stamps are printed on such (...)
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The principle of R.G.R. Presses
A High output rotary press (R.G.R. press) is a 4-colour intaglio press which uses the same drying and tracking (...)
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