Heavy Coverage
My husband and I run our own shop and are just getting into Letterpress more extensively lately. We have a design that we created that has heavy coverage. While we are able to get the coverage to work evenly on the Heidelberg unto our 220# cover 100% cotton Crane’s paper, we have an issue with the ink now seeping through the paper and showing through the back side of the invitation. Any suggestions as to how to stop this from happening? Or are we just destined to not create this design altogether? Your help is greatly appreciated.
Ink will not seep through 220# cover. You are probably misfeeding a sheet and offsetting ink onto the tympan sheet and picking it up onto the back of the next sheets. If you have the press overpacked sometimes the form can contact the tympan as you are setting up and that too will carry ink onto the back of the sheet. Another problem you might be having is offset when stacking the printed pieces. 220# is pretty heavy stock and heavy coverage will tend to offest when stacked. Don’t stack the sheets and your problem (if indeed this is what it is) should disappear. Best of luck and Merry Christmas.
I’d second that—probably offset from stacking. If you were misfeeding with heavy coverage you’d see a significant amount of ink on the packing. Is this a platen Heidelberg or cylinder?
Either way you’re certainly not having ink seep through 220# cover stock.
Let us know how you work it out.
Sounds like you have printed the tympan on accident and it’s showing the same imprint on the back of the 220# in the same area as the front which would lead you to believe it was soaking through.
You would need to have very liquid ink to soak it like a coaster, albeit that is not the case.
Merry Christmas
Casey McGarr
Inky Lips Press
McKinney, TX