| 430 / | HD | RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF |
| 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} |
| 58.05 | DF | .~.~.~ Charge transport layer {8} |
| 58.2 | ![]() | .~.~.~.~ Organosilicon or organogermanium in charge transport layer |