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Old April 15th, 2016 -   #5 (permalink)
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Default Re: digital direct on dark T-shirt

I know what the problem is. It is the pretreatment impregnated into the shirts after pretreatment curing combined with the second curing time of the ink. It almost look they saturated pretty heavy the pretreatment and in order to dry it they may have overcooked. Different machines yields different results. Some pretreatment takes up to 90 seconds to cure (same with curing the ink) and if the heat press (that's the square you see on the shirts) is too hot it will burn the pretreatment into the garment. Some other pretreatments only takes 35 seconds to cure and if done properly you would have barely seen the same effect which is an unavoidable part of digital printing. Those will most likely disappear after the first or second wash. It seems that the color of the shirt is dark gray or charcoal, those are the most difficult to control the square you see, at least in my case.

Light shirts could be any shirt in the pastel colors. Light shirts sometimes can be printed without the white underbase (cheaper) but the colors won't reproduce the same as the file colors because CMYK are semitransparent and will pick the color of the shirt. (blue ink on a light yellow shirt will look greenish)

I believe Spreadshirt uses a lot of different printers (Members) and not all printers are created equal. Your best bet is to find a local printer you can relay to and build a relationship with him/her. They will tell you all the shortcomings and benefits of Digital garment printing and best of all, what are they capable of producing for you.

Good luck