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1. 发明专利

JP2011180343A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2011180343A
公开(公告)日：2011-09-15
申请号：JP2010044047
申请日：2010-03-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOINUMA NORIYUKI , ISHIBASHI MIKIO , UNO MUGIJIRO , YOSHINAMI HIDEKI , NAKAGAWA ETSUNORI , HASHIMOTO SHUNICHI , MAEDA HIROAKI , OZAKI NAOYUKI , TAKAHASHI TOMOKO , YOSHIDA TAKASHI
IPC分类号： G03G15/16 , G03G15/00 , G03G15/01 , G03G15/02
摘要： PROBLEM TO BE SOLVED: To provide a high-speed, high-reliable and inexpensive image forming apparatus, which forms double-sided images in an image forming form of the so-called one-path form. SOLUTION: The image forming apparatus includes: a first intermediate transfer body to which first toner images formed on a plurality of first image carriers are primarily transferred, and which is the intermediate transfer body for carrying the first toner image; and a second image carrier for carrying a second monochrome toner image. The first toner image carried on the intermediate transfer body is electrostatically transferred to a first surface of a recording medium, and the second toner image is directly electrostatically transferred to a second surface of the recording medium on a reverse side to the first surface on an upstream side or a downstream side of the intermediate transfer body in a recording medium conveying direction. The recording medium which carries the toner images on the first and second surfaces is fed to a fixing stage, to perform double-sided image fixing at a time, and a charge polarity of the first toner image carried on the intermediate transfer body is made to be different from a charge polarity of the second toner image. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供以所谓的单向形式的图像形成形式形成双面图像的高速，高可靠性和廉价的图像形成装置。图像形成装置包括：第一中间转印体，其中形成在多个第一图像载体上的第一调色剂图像首先被转印到所述第一中间转印体，并且其是用于承载第一调色剂图像的中间转印体; 以及用于承载第二单色调色剂图像的第二图像载体。将中间转印体上承载的第一调色剂图像静电转印到记录介质的第一表面上，并将第二调色剂图像直接静电转印到记录介质的第二表面上，与反应器的第一表面相反在记录介质输送方向上的中间转印体的侧面或下游侧。将承载第一和第二表面上的调色剂图像的记录介质送入定影台，一次进行双面图像定影，并将承载在中间转印体上的第一调色剂图像的电荷极性设为与第二调色剂图像的电荷极性不同。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2011180498A Image forming device 有权
标题翻译：图像形成装置
公开(公告)号：JP2011180498A
公开(公告)日：2011-09-15
申请号：JP2010046443
申请日：2010-03-03
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHIDA TAKASHI , KANAYA HIDEAKI , TAKAHASHI TOMOKO , KOINUMA NORIYUKI , HASHIMOTO SHUNICHI , MAEDA HIROAKI , OZAKI NAOYUKI , NAKAGAWA ETSUNORI , UNO MUGIJIRO , YOSHINAMI HIDEKI , ISHIBASHI MIKIO
IPC分类号： G03G15/16 , G03G15/01 , G03G21/00 , G03G21/14
摘要： PROBLEM TO BE SOLVED: To prevent reverse transfer of a black toner image due to discharge in secondary transfer of a color image, in an image forming device including an independent monochrome image unit that facilitates recycling of black toner. SOLUTION: The image forming device includes: an intermediate transfer body on which a toner image is multi-transferred; a plurality of color image forming units disposed in parallel on the periphery of the image transfer body and forming toner images different in color on the inter mediate transfer body; a secondary transfer device which transfers composite color image on the intermediate transfer body to a recording medium; and a monochrome image forming unit which transfers to the recording medium the black toner image provided upstream of the recording medium conveyance path from the secondary transfer device. The image forming device further includes a re-charging means charging the black toner downstream of the recording medium conveyance path from the transfer position of the monochrome image forming unit and upstream of the recording medium conveyance path of the secondary transfer position by a secondary transfer device. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了防止在彩色图像的二次转印中由于放电而导致的黑色调色剂图像的反向转印，在包括便于黑色调色剂再循环的独立单色图像单元的图像形成装置中。解决方案：图像形成装置包括：中间转印体，调色剂图像在其上多次转印; 多个彩色图像形成单元，其平行设置在图像转印体的周边上，并且在中间转印体上形成不同颜色的调色剂图像; 将中间转印体上的复合彩色图像转印到记录介质上的二次转印装置; 以及单色图像形成单元，其从二次转印装置向记录介质传送设置在记录介质输送路径上游的黑色调色剂图像。图像形成装置还包括从双色图像形成单元的转印位置和二次转印位置的记录介质输送路径的上游向记录介质输送路径下游的黑色调色剂充电的再充电装置，。版权所有（C）2011，JPO＆INPIT

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