摘要:
An electrophotographic photosensitive member has a photosensitive layer on an electroconductive support, characterized in that the surface layer contains a fluorine type resin powder and a fluorine type block copolymer.
摘要:
An apparatus for determining oxygen content in a sealed container is disclosed. The apparatus comprises a sampling tube having a sampling zone which is provided with a pumping means, a change-over valve means for communicating the sampling zone selectively with either inlet or outlet path and a measuring instrument containing an electrode for oxygen determination and air-tightly connected to said sampling tube where one end of the outlet path is opened against the electrode.