These innovations include the hammer mill--for more homogenous fibers and better surface quality--and the use of animal gelatin for paper surface sizing. While this gelatin obviously has been replaced with a synthetic acrylic sizing, at the time the use of animal gelatin revolutionized paper by halting the otherwise-inevitable deterioration of paper sized with wheat starch. (It may have even saved a few skins: previously, paper was disallowed from public documents, meaning all public deeds had to be written on animal parchment.) Perhaps most famously, Fabriano introduced the humble watermark in 1282. That beautiful ghostly image on your fine paper? All Fabriano's idea. Then, as now, it was used to separate their superior product from that of other paper-makers.
Fabriano's dedication to innovation and technological advancement continues in the 21st century. The only paper mill to produce hand-moulded and machine made papers under one name, it is committed to renewable energy and makes extensive use of self-generated hydroelectric power; they also work to reduce their carbon footprint. In these ways, Fabriano is leading the way to address the needs and concerns of the modern day artist.