Abstract: A recording apparatus characterized in that comprising a firmware configured to execute the following operation: performing a recording operation onto a rewritable optical recording medium with a recording speed selected from one of a plurality of recording speeds for an one-time optical recording medium; wherein the recording layer of the rewritable optical recording medium comprises at least four elements from Ge, In, Sb, Te, and Sn, wherein the component proportion of Sb/Te is ranged from 3 to 8, and the thickness of the recording layer is ranged from 3 nm to 25 nm.

Abstract: An optical effect disc, has a transparent substrate and a surface optical structure, and an optical recording media combining the optical effect disc. The surface optical structure may be a computer-generated hologram optical structure or a micro-lens array structure for showing the effect of brightening or peep prevention, or a diffraction gating structure for achieving a three-dimensional visual effect. The optical effect disc or the optical recording media may include an image forming layer for forming an image to be shown by the optical effect disc with corresponding visual effect. The optical effect disc or the optical recording media may include an adhesive layer for attaching the optical effect disc to the optical recording media.

Abstract: A recording apparatus characterized in that comprising a firmware configured to execute the following operation: performing a recording operation onto a rewritable optical recording medium with a recording speed selected from one of a plurality of recording speeds for an one-time optical recording medium; wherein the recording layer of the rewritable optical recording medium comprises at least four elements from Ge, In, Sb, Te, and Sn, wherein the component proportion of Sb/Te is ranged from 3 to 8, and the thickness of the recording layer is ranged from 3 nm to 25 nm.

Abstract: A recordable optical recording medium having inorganic films prepared by sputter coating is disclosed. The recordable optical recording medium includes a substrate; one or more film stacked structures sequentially formed on a surface of the substrate to respectively function as an independent recording layer structure and include from top to bottom a reflective film, an upper dielectric film, one or more recording films, a lower dielectric film and a barrier film; an interlayer separating layer located between two adjacent film stacked structures to isolate them from each other; and a ZrO2-based interface film additionally formed in each of the film stacked structures between the reflective film and the upper dielectric film. With these arrangements, the recordable optical recording medium can have improved environmental resistance and optimized electrical characteristics.