about two weeks ago I tried a sample roll of Magic GFPOLYSIJ (intelicoat) on my CP64, ran great! ordered a batch and sold a job on it.. on the first print the poly stuck to the backheater and caused a head crash!!! (looked away for a second), cleared that and started up again, noticed the sticking, deduced that it was from static, I ran some tinsil(sp?) across the front as the media goes in and some behind the poly in the back(right before the large panel that faces the dryer, that fixed my transport issue. shortly after that, the press started printing multi-colored dashes all over my prints! I called Seiko on it they said that the static was zapping the heads and causing a misfire. I inceased the humidity in the room from 20% to around 30% and that problem went away. I almost got a complete print out and my Light cyan loses a bunch of jets! now I can't print any more than say 2-3 feet before the Lt Cyan drops-out, conviced once again that it is a press problem I load up some of our standard gloss (shil trisolv) and print out about 30ft perfectly. I have calls in to intelicoat and seiko, still awaiting a good answer...
Sounds like a voltage issue on the heads. We had a similar problem. Try adjusting the offending head voltage by 0.5v increments up and down and see what works. Cheers
I guess what could be useful would be to wire the roll and the machine well to the floor. Really ground it. Humidity increase is good too, but wiring the roll or letting it just slide over a metal bar connected to the ground might do the trick.
Obviously increasing humidity or using a ionizing-destatic-something-apparatus (dunno the name of that in proper english) that is usually used when you print on rigid boards - is a good idea. Also, please try to cover both of your heaters with something. I have the heaters bare, without any covering mesh, and there is a lot of sticking and static on certain materials. I guess you could buy a mesh like that which would conduct the charge down to the ground afterwards.
Also, if you're not in a hurry, try running the head in highlight mode or the whole print in high quality mode and see what happens. About those two suggestions i just don't know much, but my common sense tells me that they can actually help with influence and generation of static, respectively.
yup, looks like humidity is the key, after I got the humidity to around 35+ percent, most problems went away...the heads last through a full print, the poly runs through with very little sticking, and no annoying dashes! Of course, another issue appears, if I use the normal take-up the prints do not dry in time, to fix that I ran the printed end down the front of the dryer, out the bottom and let it run across the floor (good sweeping habits are a must for this to work), then as the prints came out I cut them off and stacked them trimed-out on a table... unfortunatly after about 50 the weight of the prints caused the bottom few to stick...AARRGG! to fix that I put brown shipping paper between each print. job is now gone, client loved them and wants more (DAMNIT!)
I've come to believe that in printing there are no solutions, just a long series of work-arounds.
I have a product that is an instant dry (microporus) 10 mil white opaque polyolefin that works all the time every time on the Seiko or Mimaki mild solvent printers. Turn off front and back heaters and print away. The material has no coating and is dry the moment it passes the printhead. I sell it in 54" x 200' rolls for $250 ($200 for first order). I'll gladly send you a large enough sample to print.
now I can't print any more than say 2-3 feet before the Lt Cyan drops-out, conviced once again that it is a press problem I load up some of our standard gloss (shil trisolv) and print out about 30ft perfectly. I have calls in to intelicoat and seiko, still awaiting a good answer...
