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    Electrophotographic photoreceptor having a protective layer
    11.
    发明授权
    Electrophotographic photoreceptor having a protective layer 失效
    具有保护层的电子照相感光体

    公开(公告)号：US4752549A

    公开(公告)日：1988-06-21

    申请号：US924282

    申请日：1986-10-27

    Applicant: Shigenori Otsuka ,  Kohki Furuya ,  Mamoru Nozomi

    Inventor： Shigenori Otsuka ,  Kohki Furuya ,  Mamoru Nozomi

    IPC: G03G5/04 ,  G03G5/14 ,  G03G5/147

    CPC classification number: G03G5/14791 ,  G03G5/1473

    Abstract: An electrophotographic photoreceptor according to this invention has an electrically conductive support, a charge-generation layer, a charge-transport layer and a protective layer which consists essentially of a thermo-setting silicone resin and a polyvinyl acetal resin.The electrophotographic photoreceptor according to this invention has improved durability in repeated copying operations due to the inclusion of the polyvinyl acetal resin into the protective layer.

    Abstract translation: 根据本发明的电子照相感光体具有导电性载体，电荷产生层，电荷传输层和保护层，其基本上由热固性硅树脂和聚乙烯醇缩醛树脂组成。 根据本发明的电子照相感光体由于将聚乙烯醇缩醛树脂包含在保护层中而具有改进的反复复印操作的耐久性。

    Electrophotographic photoreceptor
    13.
    发明授权
    Electrophotographic photoreceptor 失效
    电子照相机

    公开(公告)号：US5102759A

    公开(公告)日：1992-04-07

    申请号：US619259

    申请日：1990-11-28

    Applicant: Masahiro Fuse ,  Shigenori Otsuka

    Inventor： Masahiro Fuse ,  Shigenori Otsuka

    IPC: G03G5/05 ,  G03G5/06

    CPC classification number: G03G5/0614 ,  G03G5/0514 ,  G03G5/0517 ,  G03G5/0521 ,  G03G5/0525

    Abstract: An electrophotographic photoreceptor comprising an electroconductive substrate and a photosensitive layer thereon containing a carrier generation material, a carrier transport material and an amine compound represented by the following formula (I): ##STR1## wherein A represents one selected from the group consisting of (i) --CH.sub.2 X,(ii) --CH.sub.2 CH.sub.2 X,wherein X represents an aromatic carbocyclic ring residue, an aromatic heterocyclic ring residue, a cycloalkyl group or a heterocycloalkyl group which may have a substituent,(iii) a cycloalkyl group or a heterocycloalkyl group which may have a substituent, and(iv) an aromatic carbocyclic ring residue or an aromatic heterocyclic ring residue which may have a substituent; B represents one selected from the group consisting of (i), (ii) and (iii) as defined in A; and R represents a hydrogen, alkyl group which may have a substituent or aralkyl group which may have a substituent is disclosed. The electrophotographic photoreceptor according to the present invention has an excellent electrophotographic characteristics, high resistance against ozone and nitrogen oxides, stable characteristics and image quality even after repeated use and extremely high durability.

    Electrophotographic apparatus and method
    14.
    发明授权
    Electrophotographic apparatus and method 失效
    电子照相设备和方法

    公开(公告)号：US5001027A

    公开(公告)日：1991-03-19

    申请号：US362499

    申请日：1989-06-07

    Applicant: Shigenori Otsuka ,  Itaru Ogawa ,  Kazuyuki Mito

    Inventor： Shigenori Otsuka ,  Itaru Ogawa ,  Kazuyuki Mito

    IPC: G03G21/08

    CPC classification number: G03G21/08

    Abstract: Disclosed herein is an electrophotographic apparatus and method which repeatedly use an electrophotographic photoreceptor having on an electroconductive support a photosensitive layer formed by dispersing a charge-generating substance in a binder containing a charge-transporting substance and a binder resin and a means or step for optically erasing the residual charges on the photoreceptor after transfer, the main component of a light used in the means for optically erasing the residual charges having the wavelength range which satisfies the condition defined in the formula (1):l/d.ltoreq.0.5 (1)ps wherein l is the distance of penetration of the light, i.e. the distance in the direction of depth in which the light incident on the photosensitive layer is attenuated to one tenth in intensity, and d is the thickness of the photosensitive layer.

    Electrophotographic plate
    17.
    发明授权
    Electrophotographic plate 失效
    电子照相板

    公开(公告)号：US4407919A

    公开(公告)日：1983-10-04

    申请号：US390842

    申请日：1982-06-22

    Applicant: Tetsuo Murayama ,  Shigenori Otsuka ,  Tsunemitsu Tajima ,  Yukihiro Sato

    Inventor： Tetsuo Murayama ,  Shigenori Otsuka ,  Tsunemitsu Tajima ,  Yukihiro Sato

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

    CPC classification number: G03G5/0618 ,  G03G5/0612

    Abstract: A double-layered electrophotographic plate having at least a charge generating layer and a charge transporting layer on an electroconductive substrate, wherein said charge transporting layer comprises(a) a dicyano vinyl compound represented by general formula (I): ##STR1## where R.sup.1 and R.sup.3 independently represent hydrogen, halogen, cyano, nitro or a substituted- or unsubstituted-arylcarbonyloxy group, and R.sup.2 represents hydrogen, halogen, cyano or a substituted- or unsubstituted-arylcarbonyloxy group with the proviso that R.sup.1, R.sup.2 and R.sup.3 are not simultaneously hydrogen, and/or a dicyano vinyl compound represented by general formula (II): ##STR2## where R.sup.4 represents hydrogen, halogen, lower alkyl or aryl group, and(b) an electron-donating organic compound.

    Abstract translation: 在导电性基材上至少具有电荷产生层和电荷输送层的双层电子照相板，其中所述电荷输送层包含（a）由通式（I）表示的二氰乙烯基化合物： 其中R1和R3独立地表示氢，卤素，氰基，硝基或取代或未取代的芳基羰基氧基，R2表示氢，卤素，氰基或取代或未取代的芳基羰氧基，条件是R1，R2和R3是 不同时为氢，和/或由通式（II）表示的二氰基乙烯基化合物：其中R 4表示氢，卤素，低级烷基或芳基，和（b）给电子有机化合物。

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