For manual duplication of x-ray films, which condition is incorrect?

• A. Must be done in the darkroom
• B. Uses Safelite duplicating film
• C. Duplicating machine exposes film using white light
• D. May be done without any special conditions

Answer: (D)

Manual duplication uses a light-sensitive duplicating film and a controlled light source, so you can’t expose it in ordinary room light. The film fogs if exposed to stray light, which is why the setup is done in a darkroom or inside a light-safe enclosure with a safelight that is appropriate for duplicating film. Using Safelite duplicating film is common because it’s designed for this purpose and works with the safer lighting conditions used during duplication. A duplicating machine exposes the film with a white-light source, typically by shining light through the original radiograph onto the duplicating film to create the copy. Saying it can be done without any special conditions is incorrect because the lighting must be controlled to prevent fogging and ensure a proper duplicate.