公开(公告)号：US11905374B2

公开(公告)日：2024-02-20

申请号：US16740473

申请日：2020-01-12

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Shogo Tomari ,  Wataru Yamada ,  Monta Ido ,  Tadashi Suto

IPC: C08G77/04 ,  C08K3/04 ,  A61B5/25

CPC classification number: C08G77/045 ,  A61B5/25 ,  C08K3/04 ,  C08K2201/001

Abstract: A conductive member contains silicone rubber and a conductive agent. The total content of cyclic dimethylpolysiloxane having 3 to 24 silicon atoms in the conductive member is 5000 ppm or less.

公开(公告)号：US20230251585A1

公开(公告)日：2023-08-10

申请号：US17902401

申请日：2022-09-02

Applicant: Fujifilm Business Innovation Corp.

Inventor： Masahiro IWASAKI ,  Yuki Oyamada ,  Keisuke Kusano ,  Wataru Yamada

IPC: G03G5/05 ,  G03G5/14 ,  G03G5/06 ,  G03G21/18

CPC classification number: G03G5/056 ,  G03G5/142 ,  G03G5/06142 ,  G03G5/06144 ,  G03G21/1814

Abstract: An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer on the conductive substrate, and a photosensitive layer on the undercoat layer, in which the undercoat layer is formed of a cured product of a composition that contains a reactive group-containing triarylamine compound, a curing agent, and an electron transport material and that has a butyral resin content of 0 mass % or more and 5 mass % or less relative to all solid components in the undercoat layer.

公开(公告)号：US11571158B2

公开(公告)日：2023-02-07

申请号：US16869549

申请日：2020-05-07

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Wataru Yamada

IPC: A61B5/291 ,  A61B5/00

Abstract: An electrode includes a living body contact portion that is to be in contact with a living body and that contains a rubber material and at least one carbon material selected from carbon nanotubes and graphene. The ratio of the volume resistivity of the living body contact portion to the surface resistivity of the living body contact portion is 1.2 or more. The amount of the carbon material in the living body contact portion is 3 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the rubber material, or the living body contact portion has a 25% compression hardness of 20 kPa or more and 110 kPa or less.

公开(公告)号：US20240118653A1

公开(公告)日：2024-04-11

申请号：US18180902

申请日：2023-03-09

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Keisuke Kusano ,  Wataru Yamada ,  Masahiro Iwasaki ,  Akihiro Kawasaki ,  Yuki Oyamada

IPC: G03G15/00 ,  G03G9/087 ,  G03G15/01 ,  G03G15/02 ,  G03G15/04 ,  G03G15/16

CPC classification number: G03G15/6597 ,  G03G9/0872 ,  G03G15/0121 ,  G03G15/0233 ,  G03G15/04036 ,  G03G15/1685

Abstract: 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.

公开(公告)号：US20230251586A1

公开(公告)日：2023-08-10

申请号：US17942582

申请日：2022-09-12

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Keisuke KUSANO ,  Wataru Yamada ,  Masahiro Iwasaki ,  Yuki Oyamada

IPC: G03G5/14 ,  G03G5/047 ,  G03G5/06 ,  G03G21/18

CPC classification number: G03G5/142 ,  G03G5/047 ,  G03G5/0696 ,  G03G5/0668 ,  G03G5/0651 ,  G03G5/0648 ,  G03G21/1814

Abstract: An electrophotographic photoreceptor includes a conductive support, an undercoat layer on the conductive support, and a charge generation layer on the undercoat layer, in which the charge generation layer contains a phthalocyanine compound, the undercoat layer contains an electron transport compound, and a difference between an energy level of the lowest unoccupied molecular orbital of the phthalocyanine compound and an energy level of the lowest unoccupied molecular orbital of the electron transport compound is less than 0.45 eV.

公开(公告)号：US11641780B2

公开(公告)日：2023-05-02

申请号：US17145504

申请日：2021-01-11

Applicant: FUJIFILM BUSINESS INNOVATION CORP. ,  NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY

Inventor： Satoya Sugiura ,  Wataru Yamada ,  Katsuyoshi Hoshino

IPC: H10N10/856 ,  C08G61/12 ,  H01L35/24

Abstract: A thermoelectric conversion element includes: a thermoelectric conversion layer containing a thiophene polymer, in which a peak intensity of a diffraction angle (2θ) of 7.9° is 5 times or more a peak intensity of a diffraction angle (2θ) of 25.8° in an X-ray diffraction spectrum of the thermoelectric conversion layer.

公开(公告)号：US11333987B2

公开(公告)日：2022-05-17

申请号：US16700363

申请日：2019-12-02

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Wataru Yamada ,  Masahiro Iwasaki ,  Ryosuke Fujii ,  Keisuke Kusano ,  Yuto Okazaki ,  Taisuke Fukui

IPC: C08L27/12 ,  G03G5/07 ,  C08F114/26 ,  G03G5/05 ,  C08L27/20 ,  C08L27/14 ,  C08L27/16 ,  C08L27/18 ,  C08K5/16 ,  C08K5/17 ,  G03G21/18 ,  G03G15/00

Abstract: A fluorine-containing resin particle contains 0 or more and 30 or less carboxyl groups per 106 carbon atoms and 0 ppm or more and 3 ppm or less of a basic compound.

公开(公告)号：US11307508B2

公开(公告)日：2022-04-19

申请号：US16913619

申请日：2020-06-26

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Keisuke Kusano ,  Wataru Yamada ,  Masahiro Iwasaki ,  Yuto Okazaki

IPC: G03G5/147 ,  G03G5/05 ,  G03G15/01 ,  G03G15/08 ,  G03G21/00

Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer on the conductive substrate. The electrophotographic photoreceptor has an outermost surface layer that contains fluorine-containing resin particles and an antioxidant. The fluorine-containing resin particles contain 0 or more and 30 or less carboxy groups per 106 carbon atoms. A decrease in weight of the antioxidant when heated at 150° C. for 10 minutes in an air atmosphere is 40 mass % or less.

公开(公告)号：US11215935B2

公开(公告)日：2022-01-04

申请号：US16926762

申请日：2020-07-12

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Masahiro Iwasaki ,  Wataru Yamada ,  Kenji Kajiwara ,  Kota Maki

IPC: G03G5/00 ,  G03G5/14 ,  G03G5/05 ,  G03G5/06

Abstract: An electrophotographic photoreceptor includes a conductive substrate, an undercoating layer that is disposed on the conductive substrate, and a photosensitive layer that is disposed on the undercoating layer, in which the undercoating layer contains at least one perinone compound selected from the group consisting of the compounds represented by Formulas (1) and (2), and at least one acceptor compound selected from the group consisting of compounds represented by Formula (3) to (15) which are shown in the specification.

公开(公告)号：US11209740B2

公开(公告)日：2021-12-28

申请号：US16984821

申请日：2020-08-04

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Taketoshi Hoshizaki ,  Yusuke Watanabe ,  Keiko Matsuki ,  Yukiko Kamijo ,  Kenta Shingu ,  Tomoko Suzuki ,  Wataru Yamada

IPC: G03G5/00 ,  G03G5/05 ,  G03G15/01 ,  G03G5/147

Abstract: An electrophotographic photoreceptor includes: a conductive base body and a photosensitive layer, in which an outermost surface layer of the electrophotographic photoreceptor contains fluorine-containing resin particles, and in which a fluorine atom concentration at a surface of the outermost surface layer is 1.5 to 5.0 times a fluorine atom concentration at a depth of 1 μm from the surface of the outermost surface layer, or in which a number density ratio of aggregates of the fluorine-containing resin particles in a second region defined in this specification, to aggregates of he fluorine-containing resin particles in a first region defined in this specification is less than 0.95, and a ratio of an area ratio of the fluorine-containing resin particles in the second region, to an area ratio of the flourine-containing resin particles in the first region is within a range of 1±0.1.