Photoconductive film and electrophotographic photosensitive member contains azulenium salt
AssigneeCanon Kabushiki Kaisha
InventorsKazuhara Katagiri, Yoshihiro Oguchi, Takeshi Ohtake, Kozo Arao, Makoto Kitahara, Yoshio Takasu
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Abstract
Photoconductive films contain specified azulenium salt compounds. Electrophotographic photosensitive members are provided with a photoconductive film containing at least one of the specified azulenium salt compounds.
Claims19
A photoconductive film which comprises the azulenium salt compound represented by the formula (I), (II) or (III) as shown below;
- ##STR25## wherein each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, and R.sub.7 is hydrogen, halogen, or an organic monovalent residue, and at least one of the combinations (R.sub.1 and R.sub.2), (R.sub.2 and R.sub.3), (R.sub.3 and R.sub.4), (R.sub.4 and R.sub.5), (R.sub.5 and R.sub.6), and (R.sub.6 and R.sub.7) forms a substituted or unsubstituted heterocyclic ring or aliphatic ring;
- at least one of the combinations (R.sub.1 and R.sub.2), (R.sub.3 and R.sub.4), (R.sub.4 and R.sub.5), (R.sub.5 and R.sub.6), and (R.sub.6 and R.sub.7) may form a substituted or unsubstituted aromatic ring;
- A is an organic divalent residue linked with a double bond;
- Z.sup..crclbar. is an anionic residue.
An electrophotographic photosensitive member which comprises an electroconductive substrate and a photoconductive film comprising the azulenium salt compound represented by the formula (I), (II), or (III) as shown below;
- ##STR28## wherein each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, and R.sub.7 is hydrogen, halogen, or an organic monovalent residue, and at least one of the combinations (R.sub.1 and R.sub.2), (R.sub.2 and R.sub.3), (R.sub.3 and R.sub.4), (R.sub.4 and R.sub.5), (R.sub.5 and R.sub.6), and (R.sub.6 and R.sub.7) forms a substituted or unsubstituted heterocyclic ring or aliphatic ring. At least one of the combinations (R.sub.1 and R.sub.2), (R.sub.3 and R.sub.4), (R.sub.4 and R.sub.5), (R.sub.5 and R.sub.6), and (R.sub.6 and R.sub.7) may form a substituted or unsubstituted aromatic ring;
- A is an organic divalent residue linked with a double bond;
- Z.sup..crclbar. is an anionic residue.
Dependencies are inferred from the claim text.