Ex parte TAKEMOTO et al. - Page 6

          Appeal No. 1997-1335                                                        
          Application No. 08/201,023                                                  

          slit size of 5 Fm, produced an ink dot of 160 Fm with a                     
          printing time of 0.5 msec (column 9, lines 53-61).  In Miura,               
          Figure 11B produces a relatively large meniscus (column 9,                  
          lines 27 and 28), while Figure 11C produces a relatively small              
          meniscus which would require a lower threshold voltage for                  
          discharging the ink (column 9, lines 37-40).  Thus, we see                  
          that nozzle plates are subjected to a large variety of                      
          applications.  Appellants envision a piezo transducer drive                 
          system (brief-page 4), Miura envisions an electric field and                
          air pressure system (column 1, lines 14 and 15), while                      
          Fujimura envisions a thermal energy and electric field system               
          (abstract).  Appellants’ claims are not limited to any                      
          particular system or operational constraints.  Each system may              
          use a variety of inks having different physical                             
          characteristics.  Each system may require different ink dot                 
          sizes, depending on desired print quality and printing speed.               
                    Accordingly, we agree with the Examiner that                      
          optimization of the nozzle size and predetermined distance of               
          the water-repellent coating from the nozzle hole edge, would                
          have been obvious once the particular nozzle plate application              


Page:  Previous  1  2  3  4  5  6  7  8  9  10  Next 

Last modified: November 3, 2007