| 摘要 |
Provided is an electrophotographic photosensitive member, including in the following order: a support; a charge-generating layer; and a charge-transporting layer, in which: the charge-generating layer includes a gallium phthalocyanine crystal in which an organic compound is contained; the organic compound is at least one compound selected from the group consisting of dimethyl sulfoxide, N,N-dimethylformamide, N-methylformamide, N-propylformamide, N-vinylformamide, and N-methylpyrrolidone; a content of the organic compound is 0.1% by mass or more and 1.5% by mass or less with respect to a mass of gallium phthalocyanine in the gallium phthalocyanine crystal; and the charge-transporting layer comprises at least one compound selected from the group consisting of a compound represented by the formula (1), a compound represented by the formula (2), a compound represented by the formula (3), and a compound represented by the formula (4). |
| 主权项 |
1. An electrophotographic photosensitive member, comprising in the following order:
a support; a charge-generating layer; and a charge-transporting layer, wherein: the charge-generating layer comprises a gallium phthalocyanine crystal in which an organic compound is contained; the organic compound is at least one compound selected from the group consisting of dimethyl sulfoxide, N,N-dimethylformamide, N-methylformamide, N-propylformamide, N-vinylformamide, and N-methylpyrrolidone; a content of the organic compound is 0.1% by mass or more and 1.5% by mass or less with respect to a mass of gallium phthalocyanine in the gallium phthalocyanine crystal; and the charge-transporting layer comprises at least one compound selected from the group consisting of a compound represented by the formula (1), a compound represented by the formula (2), a compound represented by the formula (3), and a compound represented by the formula (4):in the formula (1):
Ar1 and Ar2 each independently represent a substituted or unsubstituted phenyl group; X represents a phenylene group; Y1 and Y2 each independently represent a substituted or unsubstituted phenyl group, a substituted or unsubstituted benzyl group, a 9,9-dimethyl-9H-fluoren-2-yl group, or a group represented by the following formula (A); a substituent of the substituted phenyl group is an alkyl group having 1 to 4 carbon atoms, a methoxy group, an ethoxy group, a dimethylamino group, a diethylamino group, or a phenyl group; and a substituent of the substituted benzyl group is a methyl group or an ethyl group,in the formula (A):
Ar3 represents a substituted or unsubstituted phenyl group; a substituent of the substituted phenyl group is an alkyl group having 1 to 4 carbon atoms, a methoxy group, an ethoxy group, a dimethylamino group, a diethylamino group, or a phenyl group; R1 represents a substituted or unsubstituted alkyl group having 1 to 3 carbon atoms; and a substituent of the substituted alkyl group is an alkyl group having 1 to 4 carbon atoms, a methoxy group, an ethoxy group, a dimethylamino group, a diethylamino group, or a phenyl group,in the formula (2):
Ar101 to Ar104 each independently represent a substituted or unsubstituted aryl group,in the formula (3):
Ar105 to Ar110 each independently represent a substituted or unsubstituted aryl group; and Ar111 represents a phenylene group or a 4,4′-biphenyldiyl group,in the formula (4):
Ar112 to Ar117 each independently represent a substituted or unsubstituted aryl group; Ar118 and Ar119 each independently represent a phenylene group or a 4,4′-biphenyldiyl group; and R101 and R102 each independently represent an alkyl group or a phenyl group, or R101 and R102 represent groups necessary for forming a ring structure by being bonded to each other together with a carbon atom to which R101 and R102 are bonded. |
