"He who marches out of step hears another drum." ~ Ken Kesey
Bear with me here fellers got a crazy problem and will try to explain, last Friday we are printing a simple two color print purple on a white base easy job so I thought. Screens are 137 mesh ct so we're doing 78 pcs I P/F/P the underbase carefully not to over cook, we get down to the last for shirts and the purple starts to print very light pastel looking. No problem, I wipe the bottom of the screen and hit it again same thing, ok I wipe it again and flash the already pastel purple print and reprint same thing, so I skip that shirt and go onto the next and yes it prints the pastel purple again only on one side, now mine you I've run all the shirts the same way except for these 4 want print correct. I ended up taking a small soft squeegee about 60 duro and hand printing that spot on the press and it covered fine, after I did the run I went back and printed that color by itself with out the underbase and it printed fine. I know it had some thing to with the underbase but why these four shirts and not the rest? any of you had this happen and figured how the cause.darryl
But, if I understand what he says, these same shirts printed fine when the purple was put down manually. Wouldn't the same blending with the still-wet white still occur?
Let me toss out another possibility. Uneven ink deposit on underbase?