Blotchy coasters...

[draig]

That's why I don't touch UniSub any more. Could never get it to print properly.

Sharon

[Andrew]

Unisub coasters for us are the item that gives the best print out of all of our printables. Colours come up very vibrant and crisp. A great item as they are quick to turn around as well.

I would have said increase the temp to nearer 200 like the others but also make sure you have firm pressure. Moisture I wouldn't woory about so much myself if the temp and pressures are up. We often have decent runs of coasters 250/500 etc and plenty of steam comes out and gathers as water at sides of press if it has been a busy session but this doesn't aafect the print. The times it goes blotchy is when our pressure is not high enough. Temp low can have differing effects which are between pale colours and slightly mottled finish. Photos would really help to see the exact finish you get on a bad print.

[Ian Mc]

That's why I don't touch UniSub any more. Could never get it to print properly.

Sharon

Really, Sharon? Unisub is generally one of the easiest and most consistent substrates to print! When testing a new piece of equipment, if I can't get a good image onto a piece of Unisub/ChromaLuxe then I generally give up on that particular piece of kit! PM me if you want to discuss it at all.

Justme... what paper are you using? This can make a difference too. I've tested a lot of different types of paper recently, and found that some of the 'cheaper' ones don't offer great ink release. If you want to try some of ours, PM me and I will send you a sample or two. Also, we do personally find on presses of that style (i.e. cheaper Chinese units) that you may need to set the time a little longer than on something like an Insta, Pressmech or Adkins unit. As Andrew has pointed out, moisture isn't usually a bother if you're using a firm pressure and appropriate times and temperatures (I find 200°C at 60 secs sufficient for smaller items, anything over 8x10" will need longer).