La collection s'expose

From 1823 onwards, Nicéphore Niépce develops an ink procedure called heliography. In the last phase of its manufacture, it presents the advantage of not needing light. When editors begin to incorporate photographic images into their publications, new reproduction techniques on metal start to appear. They will multiply under the name of “photogravure”. By the end of the 19th century, the advancements of the modern press mechanisation represent a giant leap for prints obtained through the process combining photography and etching. After rotogravure and the daguerian gravure, other photomechanical procedures will see the day. Today, no less than fifteen different techniques are being used, including offset printing, photolithography, collotype and screen printing