Leather is one material that has a lot of applications that demand inks that can give when flexed. Journals, binder covers, seat covers, wall art, even apparel and appliqués can all be printed with small to mid-format UV-LED printers using flexible or hybrid inks.
When dealing with real leather, it is essential that adhesion testing be done as some leathers have oils on them that can cause adhesion challenges. The fix may be as simple as cleaning the area to be printed with an alcohol wipe down, or as extreme as moving on to a different type of leather.
—Don Copeland, ColDesi