Electrophotographic photoreceptor, process cartridge, and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsJumpei Kuno, Akira Sakakibara, Yota Ito, Shuhei Iwasaki, Kohei Makisumi
Life of this patent
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Abstract
An electrophotographic photoreceptor includes a support, an undercoat layer placed on the support, a charge generation layer placed on the undercoat layer, and a charge transport layer placed on the charge generation layer. The undercoat layer contains titanium oxide particles surface-treated with an organosilicon compound that is at least one member selected from the group consisting of compounds represented by formulas (1) to (8) and a polyamide resin. The charge generation layer contains hydroxygallium phthalocyanine.
Claims12
An electrophotographic photoreceptor comprising:
- a support;
- an undercoat layer placed on the support;
- a charge generation layer placed on the undercoat layer;
- and
- a charge transport layer placed on the charge generation layer, wherein
- the undercoat layer contains titanium oxide particles surface-treated with an organosilicon compound that is at least one member selected from the group consisting of compounds represented by formulas (1) to (8) and a polyamide resin and
- the charge generation layer contains hydroxygallium phthalocyanine:
- in formulas (1) to (8), R1 to R8 each independently represent a methyl group, an ethyl group, or an acetyl group;
- X1 to X4 each independently represent a hydrogen atom or a methyl group;
- and n represents an integer of 1 to 3.
A process cartridge comprising:
- the electrophotographic photoreceptor and
- at least one member selected from the group consisting of a charging unit, a developing unit, and a cleaning unit, the process cartridge integrally supporting the electrophotographic photoreceptor and at least one selected from the group consisting of the charging unit, the developing unit, and the cleaning unit, the process cartridge being attachable to or detachable from a main body of an electrophotographic apparatus,
- wherein the electrophotographic photoreceptor comprising:
- a support;
- an undercoat layer placed on the support;
- a charge generation layer placed on the undercoat layer;
- and
- a charge transport layer placed on the charge generation layer, wherein
- the undercoat layer contains titanium oxide particles surface-treated with an organosilicon compound that is at least one member selected from the group consisting of compounds represented by formulas (1) to (8) and a polyamide resin and
- the charge generation layer contains hydroxygallium phthalocyanine:
- in formulas (1) to (8), R1 to R8 each independently represent a methyl group, an ethyl group, or an acetyl group;
- X1 to X4 each independently represent a hydrogen atom or a methyl group;
- and n represents an integer of 1 to 3.
An electrophotographic apparatus comprising:
- the electrophotographic photoreceptor
- a charging unit;
- an exposure unit;
- a developing unit;
- and
- a transfer unit, wherein the electrophotographic photoreceptor comprising:
- a support;
- an undercoat layer placed on the support;
- a charge generation layer placed on the undercoat layer;
- and
- a charge transport layer placed on the charge generation layer, wherein
- the undercoat layer contains titanium oxide particles surface-treated with an organosilicon compound that is at least one member selected from the group consisting of compounds represented by formulas (1) to (8) and a polyamide resin and
- the charge generation layer contains hydroxygallium phthalocyanine:
- in formulas (1) to (8), R1 to R8 each independently represent a methyl group, an ethyl group, or an acetyl group;
- X1 to X4 each independently represent a hydrogen atom or a methyl group;
- and n represents an integer of 1 to 3.
Dependencies are inferred from the claim text.