公开(公告)号：US11066543B2

公开(公告)日：2021-07-20

申请号：US16567458

申请日：2019-09-11

Applicant: FUJIFILM BUSINESS INNOVATION CORP.

Inventor： Wataru Yamada ,  Takahiro Nakamura ,  Shingo Suda ,  Masahiro Iwasaki ,  Ryosuke Fujii ,  Keisuke Kusano ,  Yuto Okazaki ,  Taisuke Fukui

IPC: C08L33/14 ,  C08L27/18 ,  G03G5/05 ,  G03G15/06 ,  C08K5/09 ,  B32B27/32 ,  B32B27/30 ,  C08L33/26

Abstract: A dispersant attached polytetrafluoroethylene particle on whose surface a dispersant having a fluorine atom is attached has a content of perfluorooctanoic acid of from 0 ppb to 25 ppb with respect to the polytetrafluoroethylene particle, and a composition contains a polytetrafluoroethylene particle and a dispersant having a fluorine atom in which a content of perfluorooctanoic acid is from 0 ppb to 25 ppb with respect to the polytetrafluoroethylene particle.

公开(公告)号：US11693329B2

公开(公告)日：2023-07-04

申请号：US17523292

申请日：2021-11-10

Applicant: FUJIFILM Business Innovation Corp.

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

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

CPC classification number: G03G5/071 ,  C08F114/26 ,  C08K5/16 ,  C08K5/17 ,  C08L27/12 ,  C08L27/14 ,  C08L27/16 ,  C08L27/18 ,  C08L27/20 ,  G03G5/056 ,  G03G15/75 ,  G03G21/1803

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：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：US11048181B2

公开(公告)日：2021-06-29

申请号：US16514442

申请日：2019-07-17

Applicant: FUJIFILM Business Innovation Corp.

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

IPC: G03G5/147 ,  G03G15/00 ,  C08F267/06 ,  G03G21/18 ,  C08F14/26

Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains fluorine-containing resin particles and a fluorine-containing graft polymer having a fluorinated alkyl group. In an infrared absorption spectrum of the fluorine-containing graft polymer, a ratio of a peak area in a wavenumber range of from 1,020 cm−1 to 1,308 cm−1 to a peak area in a wavenumber range of from 1,673 cm−1 to 1,779 cm−1 is 2.7 or more and 4.8 or less.

公开(公告)号：US11526092B2

公开(公告)日：2022-12-13

申请号：US15931691

申请日：2020-05-14

Applicant: FUJIFILM Business Innovation Corp.

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

IPC: G03G5/147 ,  G03G15/00 ,  G03G21/18

Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer on the conductive substrate. The outermost surface layer of the electrophotographic photoreceptor contains fluorine-containing resin particles, a fluorine graft polymer, and an acidic compound having an acid dissociation constant (pKa) of 3 or less in water at 25° C. The amount of the acidic compound relative to the outermost surface layer is 100 ppm or more and 10000 ppm or less.

公开(公告)号：US11099492B2

公开(公告)日：2021-08-24

申请号：US16744210

申请日：2020-01-16

Applicant: FUJIFILM Business Innovation Corp.

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

IPC: G03G5/05 ,  G03G5/147 ,  G03G15/00 ,  G03G21/18

Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-containing resin particle and a fluorine-based graft polymer having a fluorinated alkyl group. A ratio of an amount of a fluorine-based graft polymer separated from the fluorine-containing resin particle to a total amount of the fluorine-based graft polymer in the outermost surface layer is 15% or less.