The Korrex group of presses are flatbed cylinder proof presses, this means that a large cylinder is used to deliver paper to the inked type, which is on a flat bed.
With the Korrex Nürnberg the paper is hand fed to the cylinder where it is gripped; the cylinder is then hand turned (using a handle) over a block of type that is fixed in place on the flat bed. Rollers that move in front of the cylinder ink the type, which transfers to the paper as the cylinder rolls past. The printed-paper is removed by hand from the cylinder once it has been rolled to the end of the flatbed. The cylinder is then returned and rolled back to the end again, passing over the type without paper so that additional ink is added to the block. Once again it is returned for paper to be added and for the process to begin again.
The flatbed cylinder proof presses can be used to make small print runs, for example fifty posters, because it offers good quality ink transfer and, once set up correctly, accurate registration (the ink goes exactly where you want it on the page). It can also be used to take printing proofs to ensure a block of type is correct prior to setting it up on an automated press that is suitable for running a high volume of prints.
The Korrex presses were built in Pforzheim, Germany between 1910 and the 1970s. Engineer Max Simmel founded the manufacturer, Max Simmell GmbH, in 1918 and letterpress proof presses were the main business from1948, but by the end of the 1960s the company had switched to offset printing presses.
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Cyclinder Proof Press
Watch the Korrex Nürnberg in action.
Filmed at The Print Project.