| 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} |
| 58.05 | DF | .~.~.~ Charge transport layer {8} |
| 59.1 | DF | .~.~.~.~ And specified charge generator layer {2} |
| 59.2 |  | .~.~.~.~.~ Charge generator layer contains compound having an acyclic azo group (i.e., -N=N-) {1} |
| 59.3 | DF | .~.~.~.~.~.~> Compound having an acyclic azo group and having either an azomethine (i.e., -CH=N), or a stilbene group; or a compound having three or more azo groups in charge generator layer |