Electrophotographic photosensitive azo pigment containing members
OwnerShozo Ishikawa, Kazuharu Katagiri +2inventors
InventorsShozo Ishikawa, Kazuharu Katagiri, Katsunori Watanabe, Makoto Kitahara
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Abstract
An electrophotographic photosensitive member having a photosensitive layer is characterized in that said photosensitive layer contains azo pigments having at least one of azo groups linked to a coupler residue represented by the following formula [1] or [2]: ##STR1## wherein R.sub.1 and R.sub.3 independently represent hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl, and R.sub.2 and R.sub.4 independently represent substituted or unsubstituted aryl.
Claims72
An electrophotographic photosensitive member comprising a conductive support, a charge transport layer, and a charge generating layer comprising azo pigments having at least one azo group linked to a coupler residue represented by the following formula or:
- ##STR171##
An electrophotographic photosensitive member comprising a photosensitive layer comprising a binder, a charge-transport material, and azo pigments having at least one azo group linked to a coupler residue represented by the following formula [1] or [2];
- ##STR210## wherein R.sub.1 and R.sub.3 independently represent hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl, and R.sub.2 and R.sub.4 independently represent substituted or unsubstituted aryl, and a conductive support.
An electrophotographic process which comprises electrically charging an electrophotographic member, said member comprising a photosensitive layer comprising a binder, and azo pigments having at least one azo group linked to a coupler residue represented by the following formula [1] or [2]:
- ##STR211## wherein R.sub.1 and R.sub.3 independently represent hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl, and R.sub.2 and R.sub.4 independently represent substituted or unsubstituted aryl, and a conductive, support, and exposing said layer to form a latent electrostatic image.
Dependencies are inferred from the claim text.