For the past few years, the ink industry has faced a volatile raw material market. Certain key ingredients are becoming scarcer, which is leading to lack of availability and higher prices. Two years ago, titanium dioxide was the main worry. Last year, photoinitiators were the major issue, as a key precursor was in very short supply. This year, pigments – particularly Pigment Yellow 74 – are a major topic. As was the case in the last two years, when fires destroyed a key titanium dioxide plant...