Disclosed is a novel ink reservoir containing a polyester fiber, such as a poly(ethylene terephthalate) fiber, having at least one continuous groove. The surface of the groove of the fiber is preferably rougher than the surface outside the groove. The ink reservoirs are useful for use with aqueous inks...http://www.google.es/patents/US4996107?utm_source=gb-gplus-sharePatente US4996107 - Ink reservoir containing modified polyester fibers
