A photographic imaging apparatus includes a housing defining an interior
cavity, an opening at one end of the housing to allow light to enter the
interior cavity, and a photographic imaging substrate located within the
interior cavity opposite from the opening for receiving the light
entering the interior cavity through the opening, the photographic
imaging substrate including a light passing substrate, a photosensitive
agent capable of producing oxygen in the presence of light, and precursor
gas, the photosensitive agent being supported on the light passing
substrate away from the opening, and exposable to light that has passed
through the light passing substrate from the opening, and an oxidizable
surface positioned in close association with the photosensitive agent,
the oxidizable surface is chemically reactive, the reaction being
enhanced by electric current, to yield a visual change or image upon
exposure to oxygen produced by the photosensitive agent upon.