A paper with a high permanence, or the ability to resist yellowing, fading, discoloring or deteriorating. This makes it suitable for printed materials that will be stored indefinitely in a library or other archive. Materials printed on alkaline papers tend to be more suited for archiving then acid papers. (See Alkaline Paper.)
The term archivable also describes a printed ink that retains its color strength, opacity, and gloss for a prolonged length of time.