| 430 / | HD | RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF |
| 449 | DF | NONRADIATION SENSITIVE IMAGE PROCESSING COMPOSITIONS OR PROCESS OF MAKING {7} |
| 464 | DF | .~ Developer {10} |
| 477 | ![]() | .~.~ Reducible metal compound including reducing agent, i.e., physical developer |