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AssigneeFuji Xerox Co., Ltd.
InventorsKazuya Hongo, Katsumi Nukada, Masakazu Iijima, Noriyoshi Takahashi, Masaaki Suwabe, Hitoshi Takimoto
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Gallium phthalocyanine halide crystals wherein a part of the crystals are changed into hydroxygallium phthalocyanine is disclosed. A method for preparing gallium phthalocyanine halide crystals wherein gallium phthalocyanine halide crystals are brought into contact with water and a part of the crystals are changed into hydroxygallium phthalocyanine is also disclosed. An electrophotographic photoreceptor formed by laminating at least a charge generating layer and a charge transporting layer successively on a conductive support wherein the charge generating layer contains gallium phthalocyanine halide crystals An which a part of the crystals are changed into hydroxygallium phthalocyanine is also disclosed.
Gallium phthalocyanine halide crystals wherein a part of the crystal is changed into hydroxygallium phthalocyanine and wherein the halogen content in the gallium phthalocyanine halide crystals is 10 to 99.9% by weight.
A method for preparing gallium phthalocyanine halide crystals (ii), having a percentage of halide changed to hydroxy, comprising contacting gallium phthalocyanine halide crystals (i) with water to change a part of the crystals (i) into hydroxy gallium phthalocyanine (ii) wherein the halogen content in the gallium phthalocyanine halide crystals (ii) is 10 to 99.9% by weight.
An electrophotographic photoreceptor formed by laminating at least a charge generating layer and a charge transporting layer successively on a conductive support wherein the charge generating layer contains gallium phthalocyanine halide crystals in which a part of the crystals is changed into hydroxygallium phthalocyanine and wherein the halogen content in the gallium phthalocyanine halide crystals is 10 to 99.9% by weight.
Dependencies are inferred from the claim text.