Process for preparing hydroxygallium phthalocyanine crystal, product thereof and electrophotographic photoreceptor using the same
AssigneeFuji Xerox Co., Ltd.
InventorsKatsumi Nukada, Katsumi Daimon, Masakazu Iijima, Yasuo Sakaguchi
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Abstract
A process for preparing hydroxygallium phthalocyanine comprising reacting a gallium trialkoxide and phthalonitrile or diiminoisoindoline in an alcohol solvent, preferably an alcohol having a boiling point of not lower than 150.degree. C., such as ethylene glycol, and hydrolyzing the resulting gallium phthalocyanine, preferably in an aqueous solution of an acid, such as sulfuric acid. The resulting hydroxygallium phthalocyanine exhibits stable electrophotographic characteristics, particularly photosensitivity, charging properties, and a dark decay rate.
Claims22
A process for preparing hydroxygallium phthalocyanine comprising reacting a gallium trialkoxide and phthalonitrile or diiminoisoindoline in an alcohol solvent and hydrolyzing the resulting gallium phthalocyanine.
A hydroxygallium phthalocyanine prepared by reacting a gallium trialkoxide and phthalonitrile or diiminoisoindoline in an alcohol solvent and hydrolyzing the resulting gallium phthalocyanine.
A process for preparing hydroxygallium phthalocyanine crystals having distinct diffraction peaks comprising reacting a gallium trialkoxide and phthalonitrile or diiminoisoindoline in an alcohol solvent;
- hydrolyzing a resulting gallium phthalocyanine;
- and treating a resulting hydroxygallium phthalocyanine with a solvent to produce hydroxygallium phthalocyanine crystals having distinct diffraction peaks at degrees of the Bragg angle (2.theta..+-.0.2) in the X-ray diffraction spectrum pattern.
Dependencies are inferred from the claim text.