31  US 6,203,934 Bl  32  *  *  *  *  *  35.  The magnetic recording medium as claimed in claim  14,  wherein a center line average surface roughness of a side  of said support on which said magnetic layer is coated  ranges from 0.2 to 6 nm.  34.  The magnetic recording medium as claimed in claim  33,  wherein said binder resin contained in said magnetic  layer comprises a polyurethane resin in an amount of from  70 to 100% by weight based on the total weight of said  binder resin.  weight of said ferromagnetic metal powder contained in said  magnetic layer is from 5 to 12% by weight.  31.  The magnetic recording medium as claimed in claim  14,  wherein said magnetic layer further comprises carbon  blacks in an amount of from 0.1 to 3% by weight based on  the weight of said ferromagnetic metal powder.  32.  The magnetic recording medium as claimed in claim s  31,  wherein said magnetic layer further comprises at least  one abrasive powder selected from the group consisting of  a-alumina having an alpha-conversion rate of 90% or more,  ~-alumina, silicon carbide, chromium oxide, cerium oxide,  a-iron oxide, corundum, artificial diamond, silicon nitride,  silicon carbide, titanium carbide, titanium oxide, silicon  dioxide, and boron nitride.  33.  The magnetic recording medium as claimed in claim  14,  wherein the total weight of said binder resin based on the 