Patent ID: 7498091

Claim:
A recording medium comprising: a medium body holding data; a first print layer extending on a surface of the medium body, said first print layer having a first thickness; a second print layer extending on the surface of the medium body, said second print layer having a second thickness larger than the first thickness; and a print protection layer covering over the first and second print layers on the surface of the medium body, said print protection layer having an inclined surface formed at a boundary between the first and second print layers and inclined relative to the surface of the medium body, wherein an inclination angle is set smaller than 0.49e −0.2x [degrees] between the inclined surface and the surface of the medium body where X[m/s] denotes a relative velocity between a recording track on the medium body and a head, wherein X is approximately equal to 1.2-4.8 [m/s].