A condition where ink builds up excessively on the rollers, blanket, or printing plate instead of transferring cleanly to the paper. This happens when the ink is too tacky, dries too fast on the press, or when running highly pigmented inks without enough vehicle. It leads to poor print quality, mottled solids, and can eventually pull fibers off the paper.
Heard on the job
The magenta is starting to stack on the second unit, so we need to add a little reducer.