发明授权
US4810607A Photosensitive member for electrophotography containing trisazo pigment having pyridylene group in its central skeleton 失效
用于电子照相的感光构件,其含有在其中心骨架中具有亚吡啶基的三偶氮颜料

Photosensitive member for electrophotography containing trisazo pigment
having pyridylene group in its central skeleton
摘要:
A photosensitive member for electrophotography comprises a photosensitive layer containing a trisazo pigment represented by the formula: ##STR1## wherein Ar.sub.1 is a pyridylene group capable of having a substituent; Ar.sub.2 and Ar.sub.3 are respectively a pyridylene group or an arylene group each capable of having a substituent; and A is a coupler residue having a phenolic OH group. Because the trisazo pigment has a characteristic central skeleton including the central nitrogen atom and an adjacent pyridylene group, the photosensitive member has a sensitivity region expanded to the near-infrared region and shows a stable charging characteristic during a continuous electrophotographic operation.
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