公开(公告)号：US09323170B2

公开(公告)日：2016-04-26

申请号：US13483536

申请日：2012-05-30

申请人： Kenji Sengoku ,  Hiromi Ogiyama ,  Hiroyoshi Haga ,  Tomokazu Takeuchi ,  Yasunobu Shimizu ,  Junpei Fujita

发明人： Kenji Sengoku ,  Hiromi Ogiyama ,  Hiroyoshi Haga ,  Tomokazu Takeuchi ,  Yasunobu Shimizu ,  Junpei Fujita

IPC分类号： G03G15/16 ,  G03G15/02 ,  G03G15/01

CPC分类号： G03G15/1665 ,  G03G15/0189 ,  G03G15/0266 ,  G03G2215/0129

摘要： An image forming apparatus includes a transfer device to transfer a toner image from an image bearing member onto a recording medium, disposed opposite the image bearing member, a transfer bias power source to apply, between the image bearing member and the transfer device, a superimposed transfer bias in which a direct current (DC) component and an alternative current (AC) component are superimposed to transfer the toner image borne on the image bearing member to the recording medium, and a controller to change the superimposed bias that the transfer bias power source applies. The controller changes the levels of the DC component and the AC component of the superimposed transfer bias in a color mode from that in a monochrome mode to secure a return electric field in the superimposed transfer bias by which the toner is returned from the recording medium to the image bearing member.

摘要翻译： 图像形成装置包括：转印装置，用于将调色剂图像从图像承载部件转印到与图像承载部件相对设置的记录介质上;转印偏压电源，用于在图像承载部件和转印装置之间施加叠加 转印偏压，其中叠加直流（DC）分量和替代电流（AC）分量以将承载在图像承载部件上的调色剂图像转印到记录介质上;以及控制器，用于改变叠加的偏压，转印偏压功率 来源适用。 控制器将彩色模式中的叠加转印偏压的直流分量和交流分量的水平从单色模式中改变，以确保叠加的转印偏压中的返回电场，调色剂从记录介质返回到 图像承载部件。

公开(公告)号：US08548345B2

公开(公告)日：2013-10-01

申请号：US13861110

申请日：2013-04-11

申请人： Ryuichi Minbe ,  Katsuya Kawagoe ,  Kenji Sengoku ,  Junpei Fujita ,  Osamu Ichihashi

发明人： Ryuichi Minbe ,  Katsuya Kawagoe ,  Kenji Sengoku ,  Junpei Fujita ,  Osamu Ichihashi

IPC分类号： G03G15/16

CPC分类号： G03G15/163 ,  G03G5/082 ,  G03G15/161 ,  G03G15/2032 ,  G03G2215/00738

摘要： A secondary transfer facing roller includes a roller part that has a through-hole penetrating in a rotary shaft line direction at a rotation center position, and a penetrating shaft member penetrating the through-hole of the roller part and spinning the roller part on a surface of the penetrating shaft member. Eccentric cams are fixed to both end regions that are not located in the roller part, so as to rotate integrally with the penetrating shaft member. A position regulating cam and an abutting roller form a gap between the intermediate transfer belt and the secondary transfer roller immediately before a transfer sheet enters a transfer nip part. While the gap is formed, current flows between the intermediate transfer belt and the secondary transfer roller via the position regulating cam and the abutting roller.

摘要翻译： 二次转印辊包括：滚子部，其具有在旋转中心位置沿旋转轴线方向贯通的贯通孔，以及穿透辊部件的贯通孔的贯穿轴构件，并将辊部分在表面上旋转 的穿透轴构件。 偏心凸轮固定到不位于辊部分中的两个端部区域，以便与穿透轴构件一体旋转。 位置调节凸轮和邻接辊在转印纸进入转印辊隙部分之前形成中间转印带和二次转印辊之间的间隙。 当形成间隙时，电流经由位置调节凸轮和邻接辊在中间转印带和二次转印辊之间流动。

公开(公告)号：US08483597B2

公开(公告)日：2013-07-09

申请号：US12974655

申请日：2010-12-21

申请人： Ryuuichi Mimbu ,  Kenji Sengoku ,  Junpei Fujita ,  Osamu Ichihashi

发明人： Ryuuichi Mimbu ,  Kenji Sengoku ,  Junpei Fujita ,  Osamu Ichihashi

IPC分类号： G03G15/08

CPC分类号： G03G15/167 ,  G03G15/1605

摘要： A transfer assembly includes a counter member having a contact face, an engagement/disengagement unit to engage and disengage the image carrying face of image carrying member and the contact face of counter member using a cam, a pressure device to apply force to a transfer nip between the image carrying face and contact face, and a recording medium feed device to feed the recording medium to the transfer nip. When the cam is at a first rotation position, the image carrying face and contact face are separated, and when the cam is at a second rotation position, the image carrying face and contact face contact. Before the recording medium enters the transfer nip, the cam rotates from the first rotation position toward the second rotation position. After the recording medium enters the transfer nip, the cam is at the second rotation position to press the image carrying face with the contact face.

摘要翻译： 传送组件包括具有接触面的对置构件，接合/分离单元，用于使用凸轮接合和分离图像承载构件的图像承载面和相对构件的接触面;压力装置，用于向转印压区施加力 在图像承载面和接触面之间，以及记录介质供给装置，用于将记录介质输送到转印辊隙。 当凸轮处于第一旋转位置时，图像承载面和接触面被分离，并且当凸轮处于第二旋转位置时，图像承载面和接触面接触。 在记录介质进入转印辊隙之前，凸轮从第一旋转位置转动到第二旋转位置。 在记录介质进入转印辊隙之后，凸轮处于第二旋转位置，以用接触面按压图像承载面。

公开(公告)号：US08447198B2

公开(公告)日：2013-05-21

申请号：US13033302

申请日：2011-02-23

申请人： Junpei Fujita ,  Ryuuichi Mimbu ,  Kenji Sengoku ,  Osamu Ichihashi

发明人： Junpei Fujita ,  Ryuuichi Mimbu ,  Kenji Sengoku ,  Osamu Ichihashi

IPC分类号： G03G15/00 ,  G03G15/01

CPC分类号： G03G15/50 ,  G03G15/0136 ,  G03G15/1615 ,  G03G2215/0129 ,  G03G2215/0161

摘要： An image forming apparatus includes an endless intermediate transfer belt rotatably stretched over a plurality of rollers, and a detector to read a pattern on the intermediate transfer belt. One of the rollers includes a first portion disposed opposite an area on the intermediate transfer belt including a pattern passing position, and a second portion not including a pattern passing position. The first portion has a diameter smaller than that of the second portion thereof, and an elastic material is superimposed on the second portion only. The detector is disposed between a second roller disposed upstream of the first roller and a third roller disposed downstream of the first roller, and opposite the intermediate transfer belt.

摘要翻译： 图像形成装置包括可旋转地延伸在多个辊上的环形中间转印带，以及读取中间转印带上的图案的检测器。 其中一个辊包括与包括图案通过位置的中间转印带上的区域相对设置的第一部分和不包括图案通过位置的第二部分。 第一部分的直径小于其第二部分的直径，弹性材料仅重叠在第二部分上。 检测器设置在设置在第一辊的上游的第二辊和设置在第一辊的下游并与中间转印带相对的第三辊之间。

公开(公告)号：US20120328315A1

公开(公告)日：2012-12-27

申请号：US13530555

申请日：2012-06-22

申请人： Tomokazu TAKEUCHI ,  Hiroyoshi Haga ,  Yasunobu Shimizu ,  Hiromi Ogiyama ,  Kenji Sengoku ,  Junpei Fujita

发明人： Tomokazu TAKEUCHI ,  Hiroyoshi Haga ,  Yasunobu Shimizu ,  Hiromi Ogiyama ,  Kenji Sengoku ,  Junpei Fujita

IPC分类号： G03G15/16

CPC分类号： G03G15/80 ,  G03G15/1665 ,  G03G2215/0129

摘要： An image forming apparatus includes a transfer unit configured to transfer a toner image onto a recording medium; a power supply unit configured to output one of an alternating-current-based voltage including at least an alternating-current voltage and a direct-current voltage to the transfer unit; and a power supply control unit configured to cause the power supply unit to start switching to the alternating-current-based voltage a first time after the power supply unit stops outputting the direct-current voltage in the case that output of the power supply unit is switched to the alternating-current-based voltage, and cause the power supply unit to start switching to the direct-current voltage a second time after the power supply unit stops outputting the alternating-current-based voltage in the case that output of the power supply unit is switched to the direct-current voltage. The second time is longer than the first time.

摘要翻译： 图像形成装置包括被配置为将调色剂图像转印到记录介质上的转印单元; 电源单元，被配置为向所述传送单元输出至少包括交流电压和直流电压的交流电压中的一个; 以及电源控制单元，被配置为在所述电源单元的输出为所述情况下，在所述供电单元停止输出所述直流电压之后，使所述电源单元开始切换到所述交流电压 切换到基于交流电压，并且在电力输出端的情况下，在电源单元停止输出基于交流电压之后，使电源单元再次开始切换到直流电压 供电单元切换到直流电压。 第二次比第一次还要长。