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公开(公告)号：US12019393B2
公开(公告)日：2024-06-25
申请号：US17397215
申请日：2021-08-09
发明人： Jiro Korenaga , Shuhei Yamazaki , Satoshi Mizoguchi , Yoichi Kigoshi , Michinori Fukuma , Kosuke Narita , Masahiro Iwasaki , Keisuke Kusano
CPC分类号： G03G5/07 , G03G5/047 , G03G5/0525 , G03G21/1814 , B82Y20/00 , B82Y30/00 , B82Y40/00
摘要： An electrophotographic photoconductor includes a conductive substrate, and a photoconductive layer, in which an outermost surface layer contains a binder resin, a charge transporting material, fluorine-containing resin particles, and an acidic compound, the number of carboxyl groups in the fluorine-containing resin particles is 0 or more and 30 or less per 106 carbon atoms of the fluorine-containing resin particles, and in a case where charging and exposure of the electrophotographic photoconductor are repeated 10,000 times under conditions of a charging potential of −700 V and an exposure intensity of 5 mJ/m2, an absolute value |RP1−RP10000| of a difference between a residual potential RP1 after charging and exposure once and a residual potential RP10000 after charging and exposure 10,000 times is 25 V or less.
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公开(公告)号：US11126106B1
公开(公告)日：2021-09-21
申请号：US17115991
申请日：2020-12-09
发明人： Satoshi Mizoguchi , Hirofumi Iida
IPC分类号： G03G15/02
摘要： A charging device includes a first charging unit that charges a target unit, which is to be charged, by coming into contact with the target unit and a second charging unit that charges the target unit by coming into contact with the target unit and in which distribution of a contact region in contact with the target unit is different from distribution of a contact region in the first charging unit.
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公开(公告)号：US20220308475A1
公开(公告)日：2022-09-29
申请号：US17397215
申请日：2021-08-09
发明人： Jiro KORENAGA KORENAGA , Shuhei Yamazaki , Satoshi Mizoguchi , Yoichi Kigoshi , Michinori Fukuma , Kosuke Narita , Masahiro Iwasaki , Keisuke Kusano
摘要： An electrophotographic photoconductor includes a conductive substrate, and a photoconductive layer, in which an outermost surface layer contains a binder resin, a charge transporting material, fluorine-containing resin particles, and an acidic compound, the number of carboxyl groups in the fluorine-containing resin particles is 0 or more and 30 or less per 106 carbon atoms of the fluorine-containing resin particles, and in a case where charging and exposure of the electrophotographic photoconductor are repeated 10,000 times under conditions of a charging potential of −700 V and an exposure intensity of 5 mJ/m2, an absolute value |RP1−RP10000| of a difference between a residual potential RP1 after charging and exposure once and a residual potential RP10000 after charging and exposure 10,000 times is 25 V or less.
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