I believe the problem you're having with the gray is that it is too light a shade of gray. Since the poymer is white and you're transferring the image to the white polymer via the "marrying" step, you need high contrast colors.I have been having the same issues... the polymer not sticking properly due to the color used. Got an Oki3400 and attempted to print a multicolored image with 2 inch high CMYK Grey (0,0,0,50) and a couple of other bright light colors (orange, light blue), when i try and marry the papers, the grey doesnt stick to the polymer at all ! only a few specs stick, but the other colors stick perfectly...
that one should be easily done with image clip for darks ..opron, totally agree. If you saw the Neenah Paper demo that "badalou" posted to you tube, you'll see the rep used a solid blue image on a black t-shirt and it looked great. I've attached my artwork and you can see why my results are not saleable with this paper. I think too many colors and shades. I had to go overboard on the contrast as per Neenah Paper tech guys in order to get somewhat fair results.
I guess I'm going to source out this graphic to a DTG house for my dark t-shirts.
Well, its not easily done with my OKI 3200 at this point. That's the reason I jumped into this thread for some help. I would like to see how it looks on a black t-shirt from output from a higher end OKI printer like yours, even though that printer is out of my price range right now.that one should be easily done with image clip for darks ..
I am also curiuos how those gray colors like the pavement, route sign etc. will turn out with 8800.
you can get good prints on darks, but you are limited to what designs you can print with it. Its hard to explain, but once you start using it you will understand.
Also the only way to do white with colors is to use concert T's as an underlay. If you press the concert T white on top of the colors though, it will eat the print. ( so concert T white first, then the colored print on top.
Another tip about the Image clip dark is that you must PEEL IT COLD after heat pressing. Wait until it is completly cold or it will pull the color off. Then to keep it from cracking, put it under the press again, and press it for 15 seconds, then stretch the print each way thoroughly hot out of the press.
Great prints every time . I got it down to a science.