Black not created in 100% black

You’ve ordered labels with black as the only print color. However, your files were created in CMYK. Please set the color to 100% black (C=0, M=0, Y=0, N=100). If you have set the four-color black in your file to be darker, please note that in digital printing, we also have the option of printing double black (Intense Black Option). This allows us to print a deeper black.