Paper printed on one side starts to curl with a delay of up to a few days. Researchers at TU Graz have discovered that this is due to solvents in the ink that over time migrate towards the unprinted ...

Alexander Maaß (front) and Ulrich Hirn have discovered that solvents in the ink migrate through the paper towards the unprinted side over time. This causes the cellulose fibres on the unprinted side ...