Jacques Sandron was employed by the printer's office of the publishing house Dupuis, and worked as a comic artist on the side. Born in the French town Le Lude in 1942, Sandron attended the Falisolle miner's school in the Belgian Namur area. The Bois du Cazier miner's disaster in Marcinelle in 1956 forced him to choose another profession, and by 1957 he was hired as an apprentice with the printer of the publishing house Dupuis. He stayed with the company until his retirement in 1994.