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公开(公告)号：US20240118653A1
公开(公告)日：2024-04-11
申请号：US18180902
申请日：2023-03-09
CPC分类号： G03G15/6597 , G03G9/0872 , G03G15/0121 , G03G15/0233 , G03G15/04036 , G03G15/1685
摘要： An image forming apparatus includes an electrophotographic photoreceptor that includes a conductive substrate and a photosensitive layer disposed on the conductive substrate, the electrophotographic photoreceptor having an outermost surface layer that contains a binder resin, a charge-transporting material, and a fluorine-containing resin particle, the fluorine-containing resin particle containing 0 or more and 30 or less carboxy groups per 106 carbon atoms, a charging device that charges the electrophotographic photoreceptor, an electrostatic latent image forming device that forms an electrostatic latent image on the electrophotographic photoreceptor that is charged, a developing device that houses a developer containing a toner and that develops, with the developer, the electrostatic latent image formed on the electrophotographic photoreceptor into a toner image, a transfer device that transfers the toner image onto a transfer-receiving medium, and an optical discharging device that, after the toner image is transferred onto the transfer-receiving medium and before the electrophotographic photoreceptor is charged, irradiates the electrophotographic photoreceptor with discharging light with a light quantity of 1.0 μW or more and 50.0 μW or less to perform discharging.
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公开(公告)号：US12032323B2
公开(公告)日：2024-07-09
申请号：US18180902
申请日：2023-03-09
IPC分类号： G03G21/08 , G03G15/00 , G03G15/01 , G03G15/02 , G03G15/04 , G03G15/16 , G03G21/00 , G03G21/06 , G03G9/087
CPC分类号： G03G21/08 , G03G15/75 , G03G15/751 , G03G15/752 , G03G15/754 , G03G21/0094 , G03G21/06 , G03G9/0872 , G03G15/0121 , G03G15/0233 , G03G15/04036 , G03G15/1685 , G03G15/6597 , G03G2215/00957
摘要： An image forming apparatus includes an electrophotographic photoreceptor that includes a conductive substrate and a photosensitive layer disposed on the conductive substrate, the electrophotographic photoreceptor having an outermost surface layer that contains a binder resin, a charge-transporting material, and a fluorine-containing resin particle, the fluorine-containing resin particle containing 0 or more and 30 or less carboxy groups per 106 carbon atoms, a charging device that charges the electrophotographic photoreceptor, an electrostatic latent image forming device that forms an electrostatic latent image on the electrophotographic photoreceptor that is charged, a developing device that houses a developer containing a toner and that develops, with the developer, the electrostatic latent image formed on the electrophotographic photoreceptor into a toner image, a transfer device that transfers the toner image onto a transfer-receiving medium, and an optical discharging device that, after the toner image is transferred onto the transfer-receiving medium and before the electrophotographic photoreceptor is charged, irradiates the electrophotographic photoreceptor with discharging light with a light quantity of 1.0 μW or more and 50.0 μW or less to perform discharging.
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公开(公告)号：US20240118636A1
公开(公告)日：2024-04-11
申请号：US18157492
申请日：2023-01-20
CPC分类号： G03G5/142 , G03G5/071 , G03G21/1814
摘要： An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer disposed on the conductive substrate, having a volume resistivity of 5.0×107 [Ωm] or more and 5.0×109 [Ωm] or less, and having a thickness of 20 μm or more and 40 μm or less, a charge generation layer disposed on the undercoat layer, and a charge transport layer disposed on the charge generation layer, having a volume resistivity of 1.0×1013 [Ωm] or more and 5.0×1014 [Ωm] or less, and having a thickness of 15 μm or more and 40 μm or less.
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4.发明申请公开(公告)号：US20220308473A1
公开(公告)日：2022-09-29
申请号：US17396061
申请日：2021-08-06
发明人： Kenta SHINGU , Yoshiteru Yamada , Akihiro Kawasaki , Keisuke Kusano , Kohei Hashimoto , Yuto Okazaki , Takeshi Iwanaga , Wataru Yamada , Hirohito Yoneyama
摘要： An electrophotographic photosensitive member includes a conductive support and a photosensitive layer disposed on the conductive support. A top surface layer of the electrophotographic photosensitive member includes fluorine-containing resin particles, a fluorine-containing dispersant, and two or more charge transporting materials. When the charge transporting materials are listed in order of decreasing HOMO energy levels, a difference in HOMO energy level between each adjacent two of the charge The ratio A of the amount of each of the charge transporting materials to the total amount of the charge transporting materials satisfies the condition 1 below, [(100/N)−(100/N×0.3)]≤A≤[(100/N)+(100/N×0.3)] Condition 1 where N represents the number of types of the charge transporting materials included in the top surface layer.
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5.发明授权公开(公告)号：US11796928B2
公开(公告)日：2023-10-24
申请号：US17396061
申请日：2021-08-06
发明人： Kenta Shingu , Yoshiteru Yamada , Akihiro Kawasaki , Keisuke Kusano , Kohei Hashimoto , Yuto Okazaki , Takeshi Iwanaga , Wataru Yamada , Hirohito Yoneyama
CPC分类号： G03G5/0539 , G03G5/0672 , G03G5/06144 , G03G21/1803
摘要： An electrophotographic photosensitive member includes a conductive support and a photosensitive layer disposed on the conductive support. A top surface layer of the electrophotographic photosensitive member includes fluorine-containing resin particles, a fluorine-containing dispersant, and two or more charge transporting materials. When the charge transporting materials are listed in order of decreasing HOMO energy levels, a difference in HOMO energy level between each adjacent two of the charge The ratio A of the amount of each of the charge transporting materials to the total amount of the charge transporting materials satisfies the condition 1 below,
[(100/N)−(100/N×0.3)]≤A≤[(100/N)+(100/N×0.3)] Condition 1
where N represents the number of types of the charge transporting materials included in the top surface layer.
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