The fixer in film processing has which primary functions?

The fixer in film processing has which primary functions?

• A. Dry the film
• B. Wash the film
• C. Remove unexposed silver bromide crystals and hardens the emulsion
• D. Develop the latent image

Answer: (C)

The fixing step is about making the image permanent. It clears unexposed silver halide crystals (silver bromide) from the emulsion and also hardens the gelatin. Removing those unexposed crystals stops them from later reacting or darkening the film, and hardening the emulsion protects the image during washing and handling, helping ensure longevity. The other actions belong to other stages: developing creates the visible image by reducing exposed silver halide to metallic silver; washing removes residual chemicals; drying occurs after everything is washed.

The fixing step is about making the image permanent. It clears unexposed silver halide crystals (silver bromide) from the emulsion and also hardens the gelatin. Removing those unexposed crystals stops them from later reacting or darkening the film, and hardening the emulsion protects the image during washing and handling, helping ensure longevity. The other actions belong to other stages: developing creates the visible image by reducing exposed silver halide to metallic silver; washing removes residual chemicals; drying occurs after everything is washed.