Ex Parte Zhou et al - Page 9

                 Appeal 2006-2650                                                                                       
                 Application 10/011,886                                                                                 

                        provides improved recording and replay capability even after                                    
                        exposure to high temperature and humidity.                                                      
                                                       Kojima                                                           
                 20) Kojima teaches that the addition of nitrogen in amounts of 1.6 to 3.1%                             
                        to GeTeSb recording media yields improvements in sensitivity (laser                             
                        power), the carrier to noise ratio (CNR) and acceptable margin of                               
                        error in erasure power.  (P. 8, Table 3).                                                       
                 21) Kojima discloses an example wherein the recording layer contains                                   
                        GeTe crystallites. (page 7,  ll. 35-36) and is used at 2000 RPM                                 
                        (-12.5mls, [0048])                                                                              
                 22) Kojima discloses the use of an interface layer containing nitrides,                                
                        including silicon and aluminum nitrides, for preventing micro-                                  
                        material flow occurring between the first light interference layer and                          
                        recording layer due to repeated recording and erasing.  [0035].  The                            
                        thickness of the interface layer is preferably 5 to 30 nm, more                                 
                        preferably 10 nm. [0035].                                                                       
                 23) Kojima teaches the importance of optimizing nitrogen content in the                                
                        recording layer. [0029].                                                                        
                                                         Zhou                                                           
                 24) Zhou discloses the use of oxygen in amounts of 0.01 to 3.5% in                                     
                        SbGeTe recording layers.  (Col. 2, ll. 21-30; Figs. 2-8).                                       
                 25) Zhou teaches that the addition of oxygen increases crystallization                                 
                        (erasure) speed.  (Col. 3, ll. 36-38).                                                          




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