公开(公告)号：US20240329557A1

公开(公告)日：2024-10-03

申请号：US18240792

申请日：2023-08-31

申请人： FUJIFILM Business Innovation Corp.

发明人： Keisuke KUSANO ,  Masahiro IWASAKI ,  Yoichi KIGOSHI ,  Yuki OYAMADA ,  Kenta IDE

IPC分类号： G03G15/02 ,  G03G9/087 ,  G03G21/00

CPC分类号： G03G15/0216 ,  G03G9/0872 ,  G03G21/0011

摘要： An image forming apparatus includes an electrophotographic photoreceptor that has an outermost surface layer containing fluorine-containing resin particles, a charge transport material, and a binder resin, in which the number of carboxy groups contained in the fluorine-containing resin particles is 0 or greater and 30 or less per 106 carbon atoms, and the outermost surface layer has a tan δ of 0.025 or greater and 0.030 or less, a charging device that comes into direct contact with the electrophotographic photoreceptor and applies only a DC voltage to charge the electrophotographic photoreceptor, an electrostatic latent image forming device that forms an electrostatic latent image on a surface of the charged electrophotographic photoreceptor, a developing device that develops the electrostatic latent image formed on the surface of the electrophotographic photoreceptor with a developer containing a toner to form a toner image, a transfer device that transfers the toner image by bringing the electrophotographic photoreceptor and a medium to be transferred into direct contact with each other, and a cleaning device that cleans the surface of the electrophotographic photoreceptor.

公开(公告)号：US20240118636A1

公开(公告)日：2024-04-11

申请号：US18157492

申请日：2023-01-20

申请人： FUJIFILM Business Innovation Corp.

发明人： Yuki OYAMADA ,  Wataru Yamada ,  Masahiro Iwasaki ,  Keisuke Kusano ,  Akihiro Kawasaki

IPC分类号： G03G5/14 ,  G03G5/07 ,  G03G21/18

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.

公开(公告)号：US20240280918A1

公开(公告)日：2024-08-22

申请号：US18448964

申请日：2023-08-13

申请人： FUJIFILM Business Innovation Corp.

发明人： Yuki OYAMADA ,  Masahiro IWASAKI ,  Yoichi KIGOSHI ,  Keisuke KUSANO ,  Kenta IDE

IPC分类号： G03G5/07 ,  G03G5/047 ,  G03G5/06

CPC分类号： G03G5/078 ,  G03G5/047 ,  G03G5/0696

摘要： An electrophotographic photoreceptor includes a conductive substrate, and a lamination type photosensitive layer disposed on the conductive substrate and including a charge generation layer and a charge transport layer, in which the charge transport layer contains polyalkylsiloxane, and an amount of a cyclic siloxane having a molecular weight of 450 or less in the charge transport layer is less than 0.1 ppm.

公开(公告)号：US20240027927A1

公开(公告)日：2024-01-25

申请号：US18190105

申请日：2023-03-26

申请人： FUJIFILM Business Innovation Corp.

发明人： Masahiro IWASAKI ,  Yuki OYAMADA

IPC分类号： G03G5/06 ,  G03G21/18

CPC分类号： G03G5/0651 ,  G03G21/1814 ,  G03G21/1821 ,  G03G5/0648 ,  G03G9/087

摘要： An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer provided on the conductive substrate and containing a binder resin and an n-type organic pigment, and a photosensitive layer provided on the undercoat layer, in which an amount of an Fe element in the undercoat layer that is detected by high-frequency inductively coupled plasma emission spectrometric analysis is 80 ppm or less.