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US 9,057,969 B2Granted
Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTsutomu Nishida, Masato Tanaka, Masataka Kawahara
Life of this patent
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Abstract
A photosensitive layer or a charge generation layer of an electrophotographic photosensitive member contains a gallium phthalocyanine and a particular diamine compound such as 1,2-diaminoethane or 1,3-diaminopropane. The content of the particular diamine compound in the photosensitive layer or the charge generation layer is from 10 ppm to 1,000 ppm (mass ratio) based on the gallium phthalocyanine.
Claims14
An electrophotographic photosensitive member comprising:
- a support;
- and
- a photosensitive layer formed on the support,
- wherein the photosensitive layer comprises:
- a compound represented by the following formula (1);
- and
- a gallium phthalocyanine, and wherein, the content of the compound represented by the formula (1) in the photosensitive layer is from 10 ppm to 1,000 ppm (mass ratio) based on the gallium phthalocyanine,
- H2N—CH2—R1—CH2—NH2 (1)
- wherein, in the formula (1),
- R1 represents a single bond, a substituted or unsubstituted alkylene group having 1 to 10 main-chain carbon atoms,
- a substituent of the substituted alkylene group is an alkyl group having 1 to 3 carbon atoms, an alkyl group having 1 to 3 carbon atoms and substituted with an amino group, or a hydroxy group,
- one of the carbon atoms in the main chain of the alkylene group may be replaced with an oxygen atom, a sulfur atom, or a bivalent group represented by the formula —NR2—, and
- R2 represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or an alkyl group having 1 to 3 carbon atoms and substituted with an amino group.
10 more elements
An electrophotographic photosensitive member comprising:
- a support;
- and
- a photosensitive layer formed on the support, the photosensitive layer comprising a charge generation layer and a charge transport layer formed on the charge generation layer,
- wherein the charge generation layer comprises:
- a compound represented by the following formula (1);
- and
- a gallium phthalocyanine, and wherein,
- the content of the compound represented by the formula (1) in the charge generation layer is from 10 ppm to 1,000 ppm (mass ratio) based on the gallium phthalocyanine,
- H2N—CH2—R1—CH2—NH2 (1)
- wherein, in the formula (1),
- R1 represents a single bond, a substituted or unsubstituted alkylene group having 1 to 10 main-chain carbon atoms,
- a substituent of the substituted alkylene group is an alkyl group having 1 to 3 carbon atoms, an alkyl group having 1 to 3 carbon atoms and substituted with an amino group, or a hydroxy group,
- one of the carbon atoms in the main chain of the alkylene group may be replaced with an oxygen atom, a sulfur atom, or a bivalent group represented by the formula —NR2—, and
- R2 represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or an alkyl group having 1 to 3 carbon atoms and substituted with an amino group.
11 more elements
Dependencies are inferred from the claim text.