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US 9,104,098 B2Granted
Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTsutomu Nishida, Junpei Kuno, Masataka Kawahara, Kaname Watariguchi, Masato Tanaka
Life of this patent
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Abstract
A charge-generating layer of an electrophotographic photosensitive member includes a phthalocyanine pigment and a specific tricyanoethylene compound. Alternatively, the charge-generating layer and/or an undercoat layer of the electrophotographic photosensitive member includes a specific tricyanoethylene compound, and the charge-generating layer includes the phthalocyanine pigment.
Claims12
An electrophotographic photosensitive member comprising:
- a support;
- and
- a charge-generating layer and a charge-transporting layer formed on the support,
- wherein the charge-generating layer comprises:
- a phthalocyanine pigment, and
- a tricyanoethylene compound represented by the formula (1) described below,
- wherein the dipole moment of the tricyanoethylene compound is 8.0 debye or more, the dipole moment being obtained from the results of molecular orbital calculation by density functional calculation at the B3LYP/6-31G level,
- wherein, in the formula (1), R1 represents an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group, an unsubstituted or substituted pyridyl group, an unsubstituted or substituted piperidyl group, or a substituted amino group.
5 more elements
An electrophotographic photosensitive member comprising:
- a support;
- an undercoat layer formed on the support;
- and
- a charge-generating layer and a charge-transporting layer formed on the undercoat layer,
- wherein the charge-generating layer comprises a phthalocyanine pigment,
- wherein the undercoat layer comprises a tricyanoethylene compound represented by formula (1) described below:
- wherein, in the formula (1), R1 represents an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group, an unsubstituted or substituted pyridyl group, an unsubstituted or substituted piperidyl group, or a substituted amino group, and
- wherein the dipole moment of the tricyanoethylene compound is 8.0 debye or more, the dipole moment being obtained from the results of molecular orbital calculation by density functional calculation at the B3LYP/6-31 G level.
5 more elements
Dependencies are inferred from the claim text.