I've tested Speedball poster ink and it leaves a nice finish. Can't say how well it stays open in the screen, but it comes in small containers and you could buy a couple to see how you like it.
Matsui water based textile ink is also supposed to work well on flat stock.
Some sort of ghetto poster printers use flat latex wall paint modified with a bit of an additive called Flotrol, sold here in home improvement stores.
If you haven't already, you might want to go over to gigposters.com and look through the forums for advice.
Matsui water based textile ink is also supposed to work well on flat stock.
Some sort of ghetto poster printers use flat latex wall paint modified with a bit of an additive called Flotrol, sold here in home improvement stores.
If you haven't already, you might want to go over to gigposters.com and look through the forums for advice.