Re: Ink Head clogging
My experience has been that some Epson Ultrachrome printers clog a lot, and some fairly infrequently, but they all clog now and then. This might be more problematic in dryer environments. There are many techniques (theories) to reduce clogging...dampening the sponges the head parks on and turning it off overnight. Leaving it on constantly, or running daily cleanings to purge the lines. We've tried everything. Running a lot of proofs probably reduces the amount of clogs, but it'll still clog occasionally. And I would say that its more likely that the first proof of the day would be clogged, but its by no means unusual to have a clog mid print or even near the end of a full day of heavy printing...happens all the time. Perhaps there's a chunk of coagulated pigment in the lines that works its way to the nozzle...kinda like deep vein thrombosis on an air traveler. I used to try turning off the printers overnight, but didn't see any improvements. Here, we leave the printers on constantly...not that I think that helps or hinders, but because they can be printed to at all hours.