Scratch-off material layer applied on optical recording media

   
   

An optical recording medium having a scratch-off material layer includes a transparent substrate, a reflective layer formed on the transparent substrate, a protective layer formed on the reflective layer, information formed on a surface of the protective layer, and at least one opaque scratch-off material layer formed on the protective layer for disguising the information.

 
Web www.patentalert.com

< Variable-speed wind power system with improved energy capture via multilevel conversion

< Semiconductor integrated circuit device including first, second and third gates

> Organic electroluminescence element and image forming apparatus or portable terminal unit using thereof

> Microstructured optical fiber

~ 00184