What is the main purpose of the hardener in film processing?

The main purpose of the hardener in film processing is to decrease the drying time of the film. During the development process, the emulsion on the film becomes soft, which can lead to scratches and other damage if the film is not handled carefully. The hardener helps by creating a firmer emulsion layer, allowing the film to dry more quickly and reducing the risk of physical damage during handling. This is particularly important for maintaining the integrity and quality of the film before it is scanned or printed.

In addition, although there may be other additives in the processing solutions that impact contrast or exposure, the specific function of the hardener is focused on enhancing the physical properties of the film during and after processing, ensuring it is ready for further use or evaluation with minimal risk.