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    • 1. 发明授权
    • Annular body, annular body stretching device and image forming apparatus
    • 环形体,环形体拉伸装置和成像装置
    • US08145106B2
    • 2012-03-27
    • US12235221
    • 2008-09-22
    • Masahiko MiyamotoNobuyuki IchizawaYousuke TsutsumiTaku Fukuhara
    • Masahiko MiyamotoNobuyuki IchizawaYousuke TsutsumiTaku Fukuhara
    • G03G15/01
    • G03G15/162G03G15/1615G03G2215/0129
    • The invention provides an annular body provided at an image forming apparatus, the annular body has at least an outermost periphery layer and an innermost periphery layer, each of which comprise carbon black, and a content of carbon black contained per unit of volume of the outermost periphery layer being smaller than a content of carbon black contained per unit of volume of the innermost periphery layer. The invention further provides an annular body stretching device, having at least the annular body and a plurality of annular body stretching units rotatably stretching the annular body at an inner surface of the annular body. The invention further provides an image forming apparatus having at least an image holder, a charging device, an exposing device, a developing device, a first transferring device, a second transferring device, and a fixing device, in which the intermediate transfer belt is the annular body.
    • 本发明提供了一种设置在图像形成装置上的环形体,环形体具有至少最外周层和最内周边层,每一个包含炭黑,并且每单位体积的最外面的碳黑含量 周边层小于最内周边层的每单位体积所含的炭黑含量。 本发明还提供了一种环形体拉伸装置,至少具有环形体和多个环形体拉伸单元,其在环形体的内表面处可旋转地拉伸环形体。 本发明还提供一种图像形成装置,其至少具有图像保持器,充电装置,曝光装置,显影装置,第一转印装置,第二转印装置和定影装置,其中中间转印带是 环形体。
    • 2. 发明授权
    • Circular body, circular body unit, and image forming apparatus
    • 圆体,圆体单元和成像装置
    • US08032067B2
    • 2011-10-04
    • US12411028
    • 2009-03-25
    • Masahiko MiyamotoNobuyuki IchizawaYousuke Tsutsumi
    • Masahiko MiyamotoNobuyuki IchizawaYousuke Tsutsumi
    • G03G15/08G03G15/01G03G15/20
    • G03G15/162
    • This invention provides a circular body, which is used for an image forming apparatus employing an electrophotographic system, the circular body containing: at least an inner layer containing resin and an outer layer that is laminated on an outer circumferential surface side of the inner layer and contains resin; and, as a conductive agent, polyaniline in the outer layer and carbon black in the inner layer; and satisfying the following relational expressions (1) and (2): 13.0≦C1≦15.0  (1) 21.5≦C2≦25.0  (2), wherein C1 represents the content (parts by weight) of the polyaniline with respect to 100 parts by weight of the resin forming the outer layer, and C2 represents the content (parts by weight) of the carbon black with respect to 100 parts by weight of the resin forming the inner layer, as well as a circular body unit using the circular body and an image forming apparatus using the circular body.
    • 本发明提供一种圆形体,其用于使用电子照相系统的图像形成装置,该圆体包含至少内层树脂和层叠在内层的外周面上的外层, 含树脂; 并且作为导电剂,外层中的聚苯胺和内层中的炭黑; 并且满足以下关系式(1)和(2):13.0≦̸ C1≦̸ 15.0(1)21.5≦̸ C2≦̸ 25.0(2)其中C1表示聚苯胺的含量(重量份)相对于100 形成外层的树脂的重量份,C2表示相对于形成内层的树脂100重量份的炭黑的含量(重量份),以及使用该圆形体的圆体单元 身体和使用该圆形体的图像形成装置。