| 430 / | HD | RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF | 
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| 31 | DF | ELECTRIC OR MAGNETIC IMAGERY, E.G., XEROGRAPHY, ELECTROGRAPHY, MAGNETOGRAPHY, ETC., PROCESS, COMPOSITION, OR PRODUCT {18} | 
| 56 | DF | .~ Radiation-sensitive composition or product {10} | 
| 75 | DF | .~.~ Radiation-conductive composition contains hetero ring {1} | 
| 76 | DF | .~.~.~ The hetero ring has at least nitrogen as a ring hetero atom {2} | 
| 78 | DF | .~.~.~.~ Polycyclo ring system having the hetero ring as one of the cyclo systems {1} | 
| 79 | DF | .~.~.~.~.~ Carbazole {2} | 
| 81 |  | .~.~.~.~.~.~ Sensitized or doped {1} | 
| 82 | DF | .~.~.~.~.~.~.~> Dye or pigment |