DIGITAL INKJET PRINTING (All files are printed as full colour - CMYK) Very economical for small print runs but unit costs do not decrease greatly as quantities increase. (Screen printing recommended for larger runs) Photographic images reproduce exceptionally well Some solid colours may appear 'grainy' Matching spot PMS colours can be difficult Small type and logos printed in colour or reversed out of coloured backgrounds are a problem (black is normally OK) External life expectancy (weather resistance and lightfastness) of up to 3 years.