| 430 / | HD | RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF |
| 269 | DF | IMAGING AFFECTING PHYSICAL PROPERTY OF RADIATION SENSITIVE MATERIAL, OR PRODUCING NONPLANAR OR PRINTING SURFACE - PROCESS, COMPOSITION, OR PRODUCT {17} |
| 270.1 | DF | .~ Radiation sensitive composition or product or process of making {5} |
| 271.1 | DF | .~.~ Identified backing or protective layer containing {4} |
| 275.1 | DF | .~.~.~ Metal as backing or protective layer {4} |
| 279.1 | | .~.~.~.~ Zinc or magnesium |