| 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} | 
| 57.1 | DF | .~.~ Having plural conductive layers {2} | 
| 57.2 | DF | .~.~.~ With plural charge generation layers {3} | 
| 57.4 | DF | .~.~.~.~ Inorganic silicon (e.g., elemental silicon, silicon alloy or inorganic compound thereof) in one or more charge generation layers {2} | 
| 57.5 |  | .~.~.~.~.~ With germanium (elemental, compound or alloy) in layer containing silicon {1} | 
| 57.6 | DF | .~.~.~.~.~.~> Germanium as dopant |