Developing device for copying apparatus of the diazo type

摘要

A device comprising a developing liquid quantity control member operatively associated with a developing liquid supply roller for adjusting to an optimum level the quantity of a nonvolatile, concentrated developing liquid supplied to a developing position between a developing liquid applicator roller and a pressure applying roller so as to apply an essential minimum of the developing liquid to an exposed photosensitive sheet of the diazo type fed to the developing position. There is also provided a developing liquid removal member disposed posteriorly to the developing position for removing from the periphery of the developing liquid applicator roller any excess developing liquid which might otherwise remain thereon.