Try searching something along the lines of 'museum quality' print. It's a vague pointer from my side but should help you. Another great advice is to make a hig

Try searching something along the lines of 'museum quality' print. It's a vague pointer from my side but should help you. Another great advice is to make a high quality scan. High resolution, full color. Output it to TIF file format. That should give you a file that you can print anywhere. So you need to take care and archive the printed one _and_ the digital one.