METHOD FOR MANUFACTURING ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR

• Main Authors: TOKIMITSU RYOICHI, TAKIZAWA KUMIKO, KUROIWA IKUYO
• Format: Patent
• Language: English; Japanese
• Published: 01.06.2023
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

To provide a method for manufacturing an electrophotographic photoreceptor that prevents a reduction in sensitivity when used repeatedly for a long period, and an electrophotographic photoreceptor.SOLUTION: A method for manufacturing an electrophotographic photoreceptor includes the steps of: performing dispersion processing on oxytitanium phthalocyanine crystals with an organic solvent containing a binder resin and water to prepare a coating liquid for a charge generating layer, forming a coating of the coating liquid for a charge generating layer, and drying the coating to form a charge generating layer; and preparing a coating liquid for a charge transport layer containing a charge transport material, a binder resin, a terminal siloxane modified resin, polydimethylsiloxane, and an organic solvent, forming a coating of the coating liquid for a charge transport layer on the charge generating layer, and drying the coating to form a charge transport layer.SELECTED DRAWING: None 【課題】 長期にわたって繰り返し使用した場合における感度の低下が抑えられた電子写真感光体を製造する方法、および電子写真感光体を提供する。【解決手段】 オキシチタニウムフタロシアニン結晶を結着樹脂および水を含有する有機溶剤とともに分散処理を行って電荷発生層用塗布液を調製し、電荷発生層用塗布液の塗膜を形成し、塗膜を乾燥させて、電荷発生層を形成する工程、ならびに、電荷輸送物質、結着樹脂、末端シロキサン変性樹脂、ポリジメチルシロキサン、ならびに有機溶剤を含有する電荷輸送層用塗布液を調製し、電荷発生層上に電荷輸送層用塗布液の塗膜を形成し、塗膜を乾燥させて、電荷輸送層を形成する工程、を有する電子写真感光体の製造方法。【選択図】 なし