The superadditivity effect in developers based on ascorbic acid with different organic redox systems was analyzed. A theoretical model was developed to qualitatively explain the properties of the components of developers and the mechanism of reduction of these processes so that the concentrations of the developers can be optimized. The developers with high diffusion constants toward the grain and higher reduction rates were found suitable to obtain higher energetic sensitivities. The obtained diffusion coefficient was related to the acidity of the reducing agent, thus implying the importance of pH of the solution.