Dry Silver Paper of Type 7772, 78-6577-2000-5 or Type 7770 are used by recorders of Medelec and Tektronics! M3 Immaging Division were tranfered to Imation, who discontinued ''Dry Silver Paper'' production by 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 inwards), Are there probably any substitute product available? Who has more than 40 ea rolls onhand available? Appreciate any available information.