4 Color Process

This is a pretty specialized print method.  This printing method mimics the same function as your desktop printer and uses the same principle as any screen you see in daily life.  It uses CMYK (Cyan, Magenta, Yellow, and Black) translucent inks printed in a halftone array overtop each other to create all the colors within the image.  The main advantage is how you can print a million colors with only using 4 inks. The huge drawback however is that there is no white printed using this method so there is no barrier to block out shirt color.  This means the color of the shirt will GREATLY affect the color of the print.  Think if you loaded a colored construction paper into your printer - the print wouldn't work well on any dark colors if at all.  This is a cool way to achieve neat things, but it definitely has it's place.