Electrophotographic photosensitive material
    8.
    发明授权
    Electrophotographic photosensitive material 失效
    电子照相感光材料

    公开(公告)号:US5914208A

    公开(公告)日:1999-06-22

    申请号:US44005

    申请日:1998-03-19

    IPC分类号: G03G15/06 G03G13/22 G03G5/04

    CPC分类号: G03G15/065

    摘要: The photosensitive material of the present invention is provided in contact with a developing roller and has a surface potential decay characteristic in which when the photosensitive material is charged to a surface potential of 800 V and is contacted with the developing roller to which a voltage (VR) is applied, the surface potential (VD) of the photosensitive material after contacting is represented by the formula (1):VD.gtoreq.800.times.EXP (0.00235.times.VR).By using this photosensitive material, a transverse black stripe in the tip of the transfer paper is prevented and it is possible to form an image having excellent image quality and image density.

    摘要翻译: 本发明的感光材料设置成与显影辊接触并且具有表面电位衰减特性,其中当感光材料被充电到800V的表面电位并与显影辊接触时,电压(VR ),接触后感光材料的表面电位(VD)由式(1)表示:VD> / = 800xEXP(0.00235×VR)。 通过使用这种感光材料,防止转印纸的尖端中的横向黑色条纹,并且可以形成具有优异的图像质量和图像浓度的图像。

    Electrophotosensitive material using a phenylenediamine derivative
    9.
    发明授权
    Electrophotosensitive material using a phenylenediamine derivative 失效
    使用苯二胺衍生物的电子感光材料

    公开(公告)号:US5494765A

    公开(公告)日:1996-02-27

    申请号:US311925

    申请日:1994-09-26

    IPC分类号: G03G5/06 G03G5/09 G03G5/047

    摘要: The present invention relates to a novel phenylenediamine derivative of the general formula (1): ##STR1## wherein R.sup.1 R.sup.2 R.sup.3 and R.sup.4 are selected from the group consisting of: alkyl groups, alkoxy groups, halogen atoms and aryl groups; and m, n, p and q are integers in the range of 0 to 3, andan electrophotosensitive material using the same as an electric charge transferring material.The phenylenediamine derivative is excellent in not only compatibility with binding resin but also electric charge transferring capability, particularly hole transferring capability. Therefore, a photosensitive material using the above derivative as an electric charge transferring material exhibits a higher sensitivity.

    摘要翻译: 本发明涉及通式(1)的新型苯二胺衍生物:其中R 1 R 2 R 3和R 4选自:烷基,烷氧基,卤素原子和芳基; m,n,p和q为0〜3的整数,作为电荷转移材料使用的光电材料。 苯二胺衍生物不仅与粘合树脂的相容性优异,而且电荷转移能力特别优异,是空穴转移能力。 因此,使用上述衍生物作为电荷转移材料的感光材料表现出较高的灵敏度。

    Photosensitive drum and image processing unit
    10.
    发明授权
    Photosensitive drum and image processing unit 失效
    感光鼓和图像处理单元

    公开(公告)号:US5983056A

    公开(公告)日:1999-11-09

    申请号:US31856

    申请日:1998-02-27

    CPC分类号: G03G15/757

    摘要: This invention relates to an image forming apparatus in which a cleaning device is arranged above a photosensitive drum close thereto. The image forming apparatus has an image processing unit provided with the photosensitive drum. The photosensitive drum is constructed such that a gear portion formed in a flange member at one axial end of the photosensitive drum has a diameter not greater than an outer diameter of the photosensitive drum. The image processing unit is constructed such that a driving force from the image forming apparatus is transmitted to the photosensitive drum via the gear portion formed in the one flange member to rotate the photosensitive drum and is transmitted to at least one of image processor means via a gear portion formed in a flange member at the opposite axial end of the photosensitive drum. With this arrangement, a poor image formation due to a blocking phenomenon resulting from long stay of toner residues can be prevented and downsizing of the image forming apparatus is realized.

    摘要翻译: 本发明涉及一种图像形成装置,其中清洁装置布置在靠近感光鼓的上方。 图像形成装置具有设置有感光鼓的图像处理单元。 感光鼓被构造成使得形成在感光鼓的一个轴向端处的凸缘构件中的齿轮部分的直径不大于感光鼓的外径。 图像处理单元被构造成使得来自图像形成装置的驱动力经由形成在一个凸缘构件中的齿轮部分传递到感光鼓,以旋转感光鼓,并且经由图像处理装置 齿轮部分形成在感光鼓的相对的轴向端部处的凸缘部件中。 利用这种布置,可以防止由于调色剂残留物的长期停留而导致的阻塞现象造成的不良图像,并且可以实现图像形成装置的小型化。