Epson UltraChrome HDX pigment inks represent the pinnacle of photographic ink technology development. Wilhelm Imaging Research has given a permanence rating of up to 200 years for color prints made with HDX inks on high quality paper and framed with adequate UV protection.
My panoramic images are commonly printed at large sizes. Each frame of each image can be made up to 30x40” and more. The largest images I have made so far are composed of 40x60” prints of each frame.