Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKaname Watariguchi, Masato Tanaka, Masataka Kawahara, Jumpei Kuno, Tsutomu Nishida
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Abstract
An electrophotographic photosensitive member can provide images in which black spots and fogging are suppressed and density unevenness due to coating unevenness of the charge generation layer is suppressed. The charge generation layer of the electrophotographic photosensitive member contains a gallium phthalocyanine crystal, a nitrogen-containing heterocyclic compound, and an amide compound represented by a formula (1), and a nitrogen atom in a heterocyclic ring of the nitrogen-containing heterocyclic compound has a substituent.
Claims20
An electrophotographic photosensitive member comprising a support, a charge generation layer formed on the support, and a charge transport layer formed on the charge generation layer,
- wherein the charge generation layer comprises
- a gallium phthalocyanine crystal,
- a nitrogen-containing heterocyclic compound, and
- an amide compound represented by a formula (1) below,
- in the formula (1), R11 represents a methyl group or a propyl group,
- a nitrogen atom in a heterocyclic ring of the nitrogen-containing heterocyclic compound has a substituent,
- the substituent of the nitrogen atom having a substituent is a substituted or unsubstituted acyl group, —(C═O)—O—R1, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group,
- where a substituent of the substituted acyl group is a group described in (i) below;
- and R1 represents a group described in (ii) below,
- (i) a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group where, in this (i), a substituent of the substituted alkyl group, a substituent of the substituted alkenyl group, a substituent of the substituted aryl group, and a substituent of the substituted heterocyclic group are each a halogen atom, a cyano group, a nitro group, a hydroxy group, a formyl group, an alkyl group, an alkenyl group, an alkoxy group, or an aryl group,
- (ii) a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group where, in this (ii), a substituent of the substituted alkyl group, a substituent of the substituted alkenyl group, a substituent of the substituted aryl group, and a substituent of the substituted heterocyclic group are each a halogen atom, a cyano group, a nitro group, a hydroxy group, a formyl group, an alkyl group, an alkenyl group, an alkoxy group, or an aryl group.
Dependencies are inferred from the claim text.