A method and apparatus for erasing information from optical recording tape having a thermo-deforming layer is disclosed in which information is recorded by forming bumps with residual stress deformed viscoelastically by way of heating portions of the thermo-deforming layer, and is erased by making the...http://www.google.com/patents/US5311499?utm_source=gb-gplus-sharePatent US5311499 - Method and apparatus for erasing information from optical recording tape with a thermo-deforming layer
