Surface roughness of the specified field which for deisukutoratsukuritomedeia or the substrate for magnetic recording medium of patandomedeia, for deisukutoratsukuritomedeia or production manner of the substrate for magnetic recording medium of patandomedeia, for deisukutoratsukuritomedeia or magnetic recording medium, and for deisukutoratsukuritomedeia for patandomedeia or

摘要

Being the DT media and the baseplate for magnetic recording medium which is suited for the production of patandomedeia, complicated process being unnecessary, it offers the baseplate for magnetic recording medium where are simply the DT media and producing patandomedeia possible. The baseplate for magnetic recording medium designates the basic material of nonmagnetic it possesses the form of disk condition as the baseplate, the magnetic membrane of the baseplate surface surface roughness of the specified territory which it tries to form a membrane, has become rougher than the other territory. When the magnetic membrane it forms a membrane in this baseplate, surface roughness in the part where it becomes rough, the magnetic membrane forms a membrane than the other territory, simply the DT media and it is possible to produce patandomedeia.