There are different methods used to print a digital design on a t-shirt:
The specific print technique that will work best for you depends on the type of product it will be printed on, the colour of the product and the colour(s) of your design. When creating a product in the T-Shirt-Designer, the best print technique(s) available for the product you select will appear in the Edit Design toolbar.
Here are the methods in more detail:
Digital Direct uses superior textile ink to print directly onto the apparel without the use of transfers. With darker t-shirts, we print a layer of white ink under the design first. The coloured ink is then embedded directly into the white layer for a rich, vibrant effect. Therefore, these prints can feel a bit thicker than those on light-coloured t-shirts.
With the help of a colour laser printer, the design is applied to a special type of transfer material. The transfer material is pressed onto the t-shirt under high temperature. There is no white colour used in this print technique. The colour of the t-shirt will show through anywhere the design contains white or transparent areas.