Nitro group-containing naphthoquinone derivatives and photosensi
Nitrogen heterocyclics in photoconductor charge transport layer
Non-halogenated polymeric binder
Non-porous and porous Al.sub.2 O.sub.3 barrier zones in layered
Non-uniformly substituted phthalocyanine compositions preparatio
Novel 1,3,4-tri-(het-)aryl-isoquinolines, process for their prep
Novel 3-trihalochalcogenpropenone compounds
Novel disazo compounds, process for the preparation of same and
Novel hydrazone compound in an electrophotographic receptor
Novel radiation-sensitive articles