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    • 43. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US07856199B2
    • 2010-12-21
    • US12472806
    • 2009-05-27
    • Takeshi Tomizawa
    • Takeshi Tomizawa
    • G03G15/09
    • G03G15/09
    • An image forming apparatus includes an image bearing member for bearing an electrostatic latent image; a rotatable developer carrying member, provided opposed to the image bearing member, for carrying a developer including toner and a carrier to a position where the developer carrying member is opposed to the image bearing member; a regulating member for regulating the amount of the developer to be carried on the developer carrying member; a driving device for rotating the developer carrying member; a controller for controlling the driving device to execute, at the time of end of image formation, a plurality of continuous operations each including acceleration of a rotational speed of the developer carrying member and deceleration thereof following the acceleration.
    • 图像形成装置包括用于承载静电潜像的图像承载部件; 与图像承载部件相对设置的用于将包括调色剂和载体的显影剂携带到显影剂承载部件与图像承载部件相对的位置的可旋转显影剂承载部件; 调节构件,用于调节要承载在显影剂承载构件上的显影剂的量; 用于旋转显影剂承载构件的驱动装置; 控制器,用于控制驱动装置在图像形成结束时执行多个连续操作,每个连续操作包括加速后的显影剂承载部件的转速的加速和减速。
    • 46. 发明申请
    • Image forming apparatus
    • 图像形成装置
    • US20080013969A1
    • 2008-01-17
    • US11730807
    • 2007-04-04
    • Takeshi Tomizawa
    • Takeshi Tomizawa
    • G03G15/16G03G21/20
    • G03G15/0131G03G15/1605G03G15/161G03G15/657G03G21/06G03G2215/0177G03G2215/2074
    • An image forming apparatus includes an intermediary transfer member for primary-transferring the toner at a primary transfer position so that a second color toner image is primary-transferred from an image carrying member onto a first color toner image which has been transferred, in an image area at the primary transfer position, from the image carrying member onto the intermediary transfer member in the image area at the primary transfer position in a superposition manner; a secondary transfer member for secondary-transferring the first and second color toner images together from the intermediary transfer member onto a recording material at a secondary transfer position; a fixing apparatus for fixing the toner images on the recording material; a guide member for guiding the recording material from the secondary transfer position to the fixing apparatus; an electrical discharging member, provided between the secondary transfer position and the guide member in a movement direction of the recording material, for electrically discharging the recording material onto which the toner images are secondary-transferred; and a voltage application apparatus for applying, to the charge-removing member before the secondary transfer, a voltage of a polarity identical to that of the first color toner image on the intermediary transfer member in a predetermined period during a period from a time at which a front end of the image area of the intermediary transfer member carrying the first color toner image passes through the secondary transfer position to a time at which a rear end of the image area reaches the first transfer position.
    • 图像形成装置包括用于在一次转印位置初次转印调色剂的中间转印部件,使得第二彩色调色剂图像从图像承载部件初次转印到已经转印的第一彩色调色剂图像上 在第一转印位置处的图像区域中的重叠转印位置处的图像区域中的转印位置; 二次转印部件,用于将第一和第二彩色调色剂图像从中间转印部件二次转印到二次转印位置的记录材料上; 用于将调色剂图像定影在记录材料上的定影装置; 用于将记录材料从二次转印位置引导到定影装置的引导构件; 放电构件,设置在所述二次转印位置和所述引导构件之间的所述记录材料的移动方向上,用于对所述调色剂图像进行二次转印的记录材料进行电放电; 以及电压施加装置,其在二次转印之前的期间,在预定时间段内,将与所述中间转印部件上的所述第一彩色调色剂图像的极性相同的电压施加到所述电荷除去部件, 携带第一颜色调色剂图像的中间转印部件的图像区域的前端通过二次转印位置到图像区域的后端到达第一转印位置的时间。
    • 50. 发明授权
    • Image forming apparatus with type-of-transfer material cleaning feature
    • 具有转印材料清洗功能的成像设备
    • US06856772B2
    • 2005-02-15
    • US10424825
    • 2003-04-29
    • Yuji BesshoTakeshi TomizawaMakoto Saito
    • Yuji BesshoTakeshi TomizawaMakoto Saito
    • G03G15/00G03G7/00G03G15/01G03G15/06G03G15/16G03G21/00G03G21/14
    • G03G21/0005G03G15/0131G03G2215/00751
    • An image forming apparatus includes a toner image forming portion for forming a toner image on a first image bearing member, a first transferring portion for transferring, onto a second image bearing member, the toner image on the first image bearing member, a second transferring portion for transferring, onto a transferring material, the toner image on the second image bearing member, a cleaning unit including a cleaning member abutting on the surface of the second image bearing member, and a transferring material recognizing portion for recognizing a type of the transferring material. The toner image forming portion forms a toner image for cleaning on the first image bearing member in accordance with information about a type of the transferring material that is recognized by the transferring material recognizing portion. The first transferring portion transfers, onto the second image bearing member, the toner image for cleaning on the first image bearing member, and the cleaning unit collects the toner image for cleaning on the second image bearing member.
    • 图像形成装置包括用于在第一图像承载部件上形成调色剂图像的调色剂图像形成部分,用于将第一图像承载部件上的调色剂图像转印到第二图像承载部件上的第一转印部分,第二转印部分 用于将转印材料转印到第二图像承载部件上的调色剂图像,包括与第二图像承载部件的表面邻接的清洁部件的清洁单元和用于识别转印材料的类型的转印材料识别部分 。 调色剂图像形成部分根据关于由转印材料识别部分识别的转印材料的类型的信息,在第一图像承载部件上形成用于清洁的调色剂图像。 第一传送部分将第一图像承载部件上的用于清洁的调色剂图像转印到第二图像承载部件上,并且清洁单元收集第二图像承载部件上的清洁用调色剂图像。