Abstract: An automatic developing apparatus for photosensitive lithographic printing plates, includes a development vessel storing a plate developer and a replenishing apparatus for replenishing a predetermined amount of development replenisher in accordance with an electric conductance of the plate developer. The replenishing apparatus includes: an electric conductance sensor detecting the electric conductance of the plate developer; a delivery device delivering the development replenisher into the development vessel; a timer detecting an elapsed time from replenishment of the development replenisher; and a control device for setting a reference electric conductance and for controlling the delivery device to replenish the development replenisher when the detected electric conductance has fallen below the set reference electric conductance.

Abstract: A sheet-like material processing apparatus in which while a sheet-like material is interposed between and conveyed by a pair of rollers, excess processing solution is squeezed out from the sheet-like material, and the sheet-like material is processed. A solution supplying portion is provided at an upstream side of the pair of rollers and drips the processing solution. A blade-like member is provided at the upstream side of the pair of rollers. Movement of the processing solution is limited by the pair of rollers and the blade-like member.