The photos can be printed on a fine art paper of 100% cotton rags and acid free, like the Baryta of Hahnemühle. The combination with ink that includes lightfast pigments from a Epson-K3 printer results in a UV-resistance of approximate 60 years. After this period, decline starts. How fast depends on the situation. If you want more protection from scratches, you can choose for luster paper + Epson K3 ink and laminate.
Printed on paper, the photo can be glued on dibond with a U-profile on the backside, for hanging. Framing however with UV-filter glass (museumglass), gives the best results, it wil stay the same for hundreds of years. — Please feel free to contact for more information.