A health scare in Italy last year over traces of a UV photoinitiator in infant milk products has focused unprecedented attention in Europe on the safety of food packaging inks, not only among regulators but also brand owners and retailers.     Ink makers are having to move quickly to head off any attempts by the authorities in the European Union (EU) to impose legal restrictions on the use of inks in food packaging.     At the same time they are having to step up their effor...