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    21.
    发明专利
    未知

    公开(公告)号：DE69523418T2

    公开(公告)日：2002-06-27

    申请号：DE69523418

    申请日：1995-12-06

    Applicant: CANON KK

    Inventor： YOSHINAGA KAZUO ,  SAKAI KIYOSHI ,  NAGASE YUKIO ,  HASHIMOTO YUICHI ,  TANAKA MAMORU

    IPC: G03G15/32 ,  H04N1/29 ,  H04N1/40

    Abstract: An image forming apparatus is constituted by an electrophotographic photosensitive member including a support and a photosensitive layer disposed on the support, charging means for charging the photosensitive member, exposure means for illuminating the charged photosensitive member with a light beam, developing means, and transfer means. The exposure means illuminates the charged photosensitive member with a light beam having a spot area (S) and said photosensitive layer has a thickness (T), wherein S and T provides the product (S x T) of at most 20,000 mu m which is effective in improving a resolution and gradation reproducibility. The photosensitive member and at least one means selected from the group consisting of charging means, developing means, and cleaning means may preferably be integrally supported to form a process cartridge which is detachably mountable to an image forming apparatus main body.

    22.
    发明专利
    未知

    公开(公告)号：DE69611880T2

    公开(公告)日：2001-08-02

    申请号：DE69611880

    申请日：1996-11-05

    Applicant: CANON KK

    Inventor： YOSHINAGA KAZUO ,  HASHIMOTO YUICHI ,  NISHIDA SHUNICHIRO

    IPC: G03G5/05 ,  G03G5/06 ,  G03G5/07 ,  G03G5/147

    Abstract: The present invention provides an electrophotographic photosensitive member having a substrate and a photosensitive layer thereupon, wherein a surface protecting layer of the photosensitive member contains a resin which is obtained by curing a curable organosilicon polymer and an organosilicon-modified positive hole transporting compound; a process-cartridge which has, in addition to the electrophotographic photosensitive member, at least one from among a primary charging means, a developing means, and a cleaning means placed into a housing, and which can be reversibly mounted to an image forming apparatus; and the image forming apparatus using the electrophotographic photosensitive member.

    23.
    发明专利
    未知

    公开(公告)号：DE69518725T2

    公开(公告)日：2001-05-23

    申请号：DE69518725

    申请日：1995-12-06

    Applicant: CANON KK

    Inventor： YOSHINAGA KAZUO ,  HASHIMOTO YUICHI ,  KASHIZAKI YOSHIO ,  HAYASHI YASUKO

    IPC: G03G5/047 ,  G03G15/00

    Abstract: An electrophotographic photosensitive member is constituted by disposing a photosensitive layer including a charge generation layer and a charge transport layer on an electroconductive support. The charge transport layer has a thickness of at most 12 mu m and is formed by dispersing therein particles having a particle size of 1 - 3 mu m at a density of 1x10 - 2x10 particles/mm . The charge transport layer and the particles described above provides a difference in refractive index of at least 0.10. The photosensitive member is effective in providing good images free from black spots and interference fringes and with a good gradation-reproducing characteristic when used as a structural member of a process cartridge and an image forming apparatus.

    27.
    发明专利
    未知

    公开(公告)号：DE69124948T2

    公开(公告)日：1997-06-26

    申请号：DE69124948

    申请日：1991-12-09

    Applicant: CANON KK ,  DAI ICHI KOGYO SEIYAKU CO LTD

    Inventor： KOYAMA TAKASHI ,  FUJIMURA NAOTO ,  HASHIMOTO YUICHI ,  SHIRAIWA TETSUO ,  MORI SHIGEO

    IPC: G03G5/05 ,  G03G5/14 ,  H04N1/29

    Abstract: An electrophotographic photosensitive member is constituted by an electroconductive support, and an intermediate layer and a photosensitive layer disposed in this order on the support. The intermediate layer comprises a reaction product of a mixture including a polyol compound [A] and a polyisocyanate compound[B] satisfying at least one of the following conditions (i) and (ii): (i) the polyol compound [A] is a high-molecular weight polyol compound, and (ii) the polyisocyanate compound is a polyoxyalkylene segment-containing polyisocyanate compound. The photosensitive member shows stable electrophotographic performances over wide environmental conditions from low temperature - low humidity to high temperature - high humidity due to the intermediate layer.

    29.
    发明专利
    未知

    公开(公告)号：FR2636747B1

    公开(公告)日：1994-06-03

    申请号：FR8912416

    申请日：1989-09-21

    Applicant: CANON KK

    Inventor： KOYAMA TAKASHI ,  HASHIMOTO YUICHI

    IPC: G03G5/14

    Abstract: A photosensitive member for electrophotography comprising an electroconductive substrate, and an intermediate layer and a photosensitive layer disposed in this order on the substrate; the intermediate layer comprising a resin component and a salt; the intermediate layer containing the salt in an amount of 1-800 ppm based on the weight of the resin component.

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