FILM DRYING APPARATUS

摘要

A drier for strips of developed film has a housing wherein the film is transported downwardly and is dried by ascending streams of hot air furnished by several discrete blowers each of which is equipped with a composite air heating device. Each heating device has a first electric resistance heater which is started in response to closing of a master switch to furnish a basic heating action, a second resistance heater which is adjustable by a regulator having a manually adjustable potentiometer, and a third resistance heater which can be started by a temperature gauge. The latter monitors the temperature of air which circulates in or leaves the housing and starts the third resistance heater when the thus determined temperature is below a preselected value. Some of the spent air which leaves the housing is recirculated to the blowers.