Charlie Facini gives step-by-step instructions for eliminating muddy prints in grayscale mode
One-colour printing is a bread and butter process for most screen printers, yet when an image is tonal instead of solid some printers produce unacceptable muddy prints.
Grayscale is the print industry term for printing a single colour screen (typically black) to reproduce a tonal image such as a photograph.
It's an effective use of a single screen when done well, and the basis for other creative techniques.
So how do you create a good tonal, single colour print?