Dry process developing apparatus having detachable screening member for developing unit

摘要

A dry process developing apparatus for a copier or like machine is constructed to prevent a toner from scattering inside the machine. The toner is transported to a surface of a photoconductive element via an opening which is formed through part of a casing adapted to store the toner. First and second screening means are detachably mounted on the casing and arranged to cover a front open portion between the surface of the photoconductive element and the casing of the developing apparatus as well as side open portions.