Electron transporting compounds, electrophotographic layers and elements comprising such compounds.

摘要

An electrophotographic layer comprising an electrically insulating binder and an electron donar additionally comprises, as an electron transporting compound, a 4H-thiopyran-1,1-dioxide having an electron-withdrawing group in the 4-position and a half-wave reduction potential more positive than -0.5 volt as measured against a saturated calomel electrode. Novel compounds useful as the electron transporting compound are provided.