This is how a DTG printer works on dark/black T-shirt. As you can see, a layer of white paint will be printed first, and color dye will be added afterward. This process will require less time if you use a high end DTG printer.
For a better result, we suggest you to print your design on light colored garment/products.
If you need any info regarding this method of t-shirt printing, kindly visit our website for more info: