| 430 / | HD | RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF | 
| 495.1 | DF | RADIATION SENSITIVE PRODUCT {7} | 
| 523 | DF | .~ Identified backing or protective layer containing {5} | 
| 524 |  | .~.~ Metal {2} | 
| 525 | DF | .~.~.~> And another backing layer other than aluminum oxide | 
| 526 | DF | .~.~.~> Aluminum |