Dry Silver Paper of Type 7772, 78-6577-2000-5 or Type 7770 are used by recorders of Medelec and Tektronics ! M3's Immaging Division were tranfered to Imation, who discontinued Dry Silver Paper production end of 1999. Type 7772 Data: Roll-format 8.5" x 131', Papers thickness 0.0044" (incl. coating) Core I.D.: 2.225" +/- 0.005". Winding: CSI (coated side inward), Are there probably any substitute for the product available ? Hwo has mor than 40 ea rolls onhand available ? Appreciate any available information, Regards HGR