Electrophotographic photosensitive member, method for producing electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and hydroxygallium phthalocyanine crystal
AssigneeCanon Kabushiki Kaisha
InventorsMasataka Kawahara, Tsutomu Nishida, Junpei Kuno, Masato Tanaka, Kaname Watariguchi
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Abstract
An electrophotographic photosensitive member includes a support and a photosensitive layer on the support, and the photosensitive layer contains a hydroxygallium phthalocyanine crystal having peaks at Bragg angles 2θ±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuKα X-ray diffraction.
Claims13
An electrophotographic photosensitive member comprising:
- a support;
- and
- a photosensitive layer on the support;
- wherein the photosensitive layer comprises a hydroxygallium phthalocyanine crystal having peaks at Bragg angles 2θ±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuKα X-ray diffraction.
A hydroxygallium phthalocyanine crystal comprising peaks at Bragg angles 2θ±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuKα X-ray diffraction.
A method for producing an electrophotographic photosensitive member comprising a support and a photosensitive layer on the support, wherein the method comprises the steps of:
- providing a hydroxygallium phthalocyanine crystal having peaks at Bragg angles 2θ±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuKα X-ray diffraction by adding an amide compound and a hydroxygallium phthalocyanine and performing a milling treatment;
- and
- forming a photosensitive layer by forming a coating film of a photosensitive layer-forming coating solution containing the hydroxygallium phthalocyanine crystal and drying the coating film,
- wherein the amide compound is at least one selected from the group consisting of a compound represented by formula (1) below, a compound represented by formula (2) below, and a compound represented by formula (3) below.
A method for producing an electrophotographic photosensitive member comprising a support, a charge generating layer on the support, and a charge transporting layer on the charge generating layer, wherein the method comprises the steps of:
- providing a hydroxygallium phthalocyanine crystal having peaks at Bragg angles 2θ±0.2° of 6.9°, 7.7°, 16.4°, 24.4°, and 26.5° in CuKα X-ray diffraction, by adding an amide compound and a hydroxygallium phthalocyanine and performing a milling treatment;
- and
- forming a charge generating layer by forming a coating film of a charge generating layer-forming coating solution containing the hydroxygallium phthalocyanine crystal and drying the coating film,
- wherein the amide compound is at least one selected from the group consisting of a compound represented by formula (1) below, a compound represented by formula (2) below, and a compound represented by formula (3) below.
Dependencies are inferred from the claim text.