A 10 page guide (PDF) written by Daniel Burge from the Image Permanence Institute (IPI) at the Rochester Institute of Technology.
From the Introduction to the Guide:
This guide provides basic information on the storage and preservation of digitally-printed photographs in scholarly and cultural collections. While there are many printing technologies for output from computers, this guide focuses on the three most popular forms of image (i.e. pictorial) hardcopy: • Inkjet • Digital electrophotography • Dye sublimation Information on recommended storage conditions, selection of housing and framing materials, proper handling and display are included. Collection care personnel in cultural institutions are the intended audience for this guide, however, it will also be useful to photographers, artists, and the general public.
Direct to Full Text Guide
Many more resources are available via the Digital Print Preservation Portal (Funded by Mellon Foundation and IMLS)