Ex Parte Bergh - Page 5

               Appeal 2007-0835                                                                             
               Application 09/950,778                                                                       
                      B.  Facts                                                                             
                      Yamane is directed to a radiographic intensifying screen including a                  
               support, a phosphor layer, and a protective layer (Yamane, col. 2, ll. 4-7).                 
               The protective layer contains light-scattering fine particles, preferably                    
               particles of titanium dioxide (Yamane, col. 4, ll. 27-44).  The background of                
               the invention section of Yamane discloses several prior art references that                  
               disclose roughened surfaces (Yamane, col. 1, ll. 29-41).  The binder                         
               employable in the surface protective layer is not restricted, but is selected to             
               provide surface durability (Yamane, col. 4, ll. 45-49).  The object is to                    
               obtain a screen with good surface durability which gives a radiation image                   
               of high sharpness with high sensitivity (Yamane, col. 1, l. 66 to col. 2, l. 3).             
               In preparation for use in a radiographic process, the radiographic X-ray film                
               is placed in contact with a screen or in-between two screens (Yamane, col. 1,                
               ll. 7-9; col. 5, ll. 38-42; col. 6, ll. 50-56; col. 8, ll. 47-51).                           
                      Van Havenbergh is also directed to a screen including a phosphor                      
               element with a protective coating used in radiography systems (Van                           
               Havenbergh, col. 1, ll. 7-18).  Van Havenbergh suggests the use of urethane                  
               acrylates in the abrasion-resistant protective coating overlaying the phosphor               
               layer (Van Havenbergh, col. 5, l. 45 to col. 6, l. 22).                                      
                      Van Landeghem is directed to an X-ray film cassette in which air                      
               pockets are eliminated between a reinforcing foil and an X-ray film within                   
               the cassette (Van Landeghem, col. 1, ll. 36-39).  The surface of the                         
               reinforcing foil facing the film has a roughness of between 10 and 60                        
               microns (Van Landeghem, col. 1, ll. 45-47).  The roughness allows air to                     
               flow out during loading and unloading of the X-ray film from the cassette so                 
               that air pockets are eliminated on loading and sticking reduced on unloading                 

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