How long your prints can last is essentially a function of the inks and paper used.
We use printers that produces print that lasts longer than traditional photographs and share this information with you.
The inks in these printers are rated to outlast traditional photographs by more than 3 times depending on the printer/substrate combination.
Meet our printers: Epson Surecolor P20070 and HP Designjet Z3200PS.
Both are using pigment inks and have at least 10 ink cartridges. Both printers can print beyond conventional CMYK gamut. The Epson printer can handle media up to 60" wide.
Print permanence reports for these printers on Canson Infinity media by Wilhelm Imaging Research can be found here. The inkset used in the Epson Surecolor P20070 is Ultrachrome Pro and has similar permanence ratings as Ultrachrome HDX.
The comparative report for traditional photographs can be found in this report (look for Kodak and Fujifilm permanence ratings).
We are more interested in getting a good print to you than getting it out fast and we slow down the printer by setting print quality to maximum.