PRESS:
Four colors from two units

Note: this tip comes from the “Ask The Experts” Section of Printers Advantage, an online resource from Heidelberg. For more, please visit www.printersadvantage.com. Q: We have a Printmaster QM 46-2 and have tried on the odd occasion to print four-color process runs, with relatively pleasing results. However, we found a few issues. First, we could only use an A4 sheet size, long edge into the grip. We had to use a 200 gsm board, and the register did move slightly. Is there any more information on what paper weights run the best for four-color work? Do you have to keep the pile pressed fully against the spring or slightly touching to keep a tight register throughout the length of the run?