公开(公告)号：US07796919B2

公开(公告)日：2010-09-14

申请号：US10557182

申请日：2004-05-17

申请人： Susumu Murakami ,  Yoshiaki Kojoh ,  Takahisa Narikiyo ,  Kuniaki Nakano ,  Yoshie Iwakura

发明人： Susumu Murakami ,  Yoshiaki Kojoh ,  Takahisa Narikiyo ,  Kuniaki Nakano ,  Yoshie Iwakura

IPC分类号： G03G21/00

CPC分类号： G03G15/0806

摘要： For an electrostatic latent image formed on an image carrier (31b), besides an operation forming an “image forming electrostatic latent image” used to form the primary image, an operation is executed that forms an “electrostatic latent image for removing developer” for removing developer that resides on a developer supply member (53a) for a predetermined time period onto the image carrier (31b). Thus, developer is nearly eliminated from residing on this developer supply member (53a) in an overcharged state for a long period of time, and generation of a fogged image is avoided as much as possible.

摘要翻译： 对于形成在图像载体（31b）上的静电潜像，除了形成用于形成主图像的“成像静电潜像”的操作之外，还执行形成“去除显影剂的静电潜像”以去除 驻留在显影剂供应构件（53a）上的图像载体（31b）上的预定时间段的显影剂。 因此，显影剂几乎从处于过充电状态的这种显影剂供给构件（53a）中长时间地排除，并且尽可能地避免产生雾化图像。

公开(公告)号：US07418234B2

公开(公告)日：2008-08-26

申请号：US10550543

申请日：2004-04-09

申请人： Susumu Murakami ,  Minoru Tomiyori ,  Hideshi Izumi ,  Takahisa Narikiyo ,  Kuniaki Nakano ,  Yoshie Iwakura

发明人： Susumu Murakami ,  Minoru Tomiyori ,  Hideshi Izumi ,  Takahisa Narikiyo ,  Kuniaki Nakano ,  Yoshie Iwakura

IPC分类号： G03G15/00

CPC分类号： G03G15/234

摘要： A discharge unit is disposed downstream of a principal transport path of a compound machine, and a shifter function is provided in this discharge unit. By shifting the paper passage position relative to a photosensitive drum when printing the front side and the paper passage position relative to the photosensitive drum when printing the back side, the region in which the surface electric potential of the photosensitive drum increases is diminished, and the region in which photographic fog is generated is made smaller. Thus, when printing the second and subsequent sheets, even when a slight amount of displacement of the transport position of the recording paper occurs, it is possible to suppress that recording paper making contact in the photographic fog region on the photosensitive drum, and defective printing can be prevented.

摘要翻译： 放电单元设置在复合机械的主输送路径的下游，并且在该排出单元中设置有换档功能。 通过在打印背面时相对于感光鼓打印前侧和纸张通过位置时相对于感光鼓移动纸张通过位置，感光鼓的表面电位增加的区域减小， 产生摄影雾的区域变小。 因此，当打印第二张和后续的纸张时，即使发生记录纸的输送位置的轻微位移，也可以抑制在感光鼓上的摄影雾区域中的记录纸接触，并且打印不良 可以防止。

公开(公告)号：US20060216090A1

公开(公告)日：2006-09-28

申请号：US10550543

申请日：2004-04-09

申请人： Susumu Murakami ,  Minoru Tomiyori ,  Hideshi Izumi ,  Takahisa Narikiyo ,  Kuniaki Nakano ,  Yoshie Iwakura

发明人： Susumu Murakami ,  Minoru Tomiyori ,  Hideshi Izumi ,  Takahisa Narikiyo ,  Kuniaki Nakano ,  Yoshie Iwakura

IPC分类号： G03G15/00

CPC分类号： G03G15/234

摘要： A discharge unit is disposed downstream of a principal transport path of a compound machine, and a shifter function is provided in this discharge unit. By shifting the paper passage position relative to a photosensitive drum when printing the front side and the paper passage position relative to the photosensitive drum when printing the back side, the region in which the surface electric potential of the photosensitive drum increases is diminished, and the region in which photographic fog is generated is made smaller. Thus, when printing the second and subsequent sheets, even when a slight amount of displacement of the transport position of the recording paper occurs, it is possible to suppress that recording paper making contact in the photographic fog region on the photosensitive drum, and defective printing can be prevented.

摘要翻译： 放电单元设置在复合机械的主输送路径的下游，并且在该排出单元中设置有换档功能。 通过在打印背面时相对于感光鼓打印前侧和纸张通过位置时相对于感光鼓移动纸张通过位置，感光鼓的表面电位增加的区域减小， 产生摄影雾的区域变小。 因此，当打印第二张和后续的纸张时，即使发生记录纸的输送位置的轻微位移，也可以抑制在感光鼓上的摄影雾区域中的记录纸接触，并且打印不良 可以防止。

公开(公告)号：US20060256399A1

公开(公告)日：2006-11-16

申请号：US10557182

申请日：2004-05-17

申请人： Susumu Murakami ,  Yoshiaki Kojoh ,  Takahisa Narikiyo ,  Kuniaki Nakano

发明人： Susumu Murakami ,  Yoshiaki Kojoh ,  Takahisa Narikiyo ,  Kuniaki Nakano

IPC分类号： H04N1/32

CPC分类号： G03G15/0806

摘要： For an electrostatic latent image formed on an image carrier (31b), besides an operation forming an “image forming electrostatic latent image” used to form the primary image, an operation is executed that forms an “electrostatic latent image for removing developer” for removing developer that resides on a developer supply member (53a) for a predetermined time period onto the image carrier (31b). Thus, developer is nearly eliminated from residing on this developer supply member (53a) in an overcharged state for a long period of time, and generation of a fogged image is avoided as much as possible.

摘要翻译： 对于形成在图像载体（31b）上的静电潜像，除了形成用于形成主图像的“成像静电潜像”的操作之外，还执行一种操作，其形成“用于除去显影剂的静电潜像”，用于 将驻留在显影剂供应构件（53a）上的显影剂移除预定时间段到图像载体（31a）上。 因此，长时间将显影剂从处于过充电状态的显影剂供给部件（53a）中几乎消除，尽可能地避免产生雾化图像。

公开(公告)号：US07254359B2

公开(公告)日：2007-08-07

申请号：US11052981

申请日：2005-02-07

申请人： Yoshie Iwakura ,  Susumu Murakami ,  Kuniaki Nakano

发明人： Yoshie Iwakura ,  Susumu Murakami ,  Kuniaki Nakano

IPC分类号： G03G15/01

CPC分类号： G03G15/0131 ,  G03G2215/0119 ,  G03G2215/0158

摘要： A transfer apparatus and an image forming apparatus are disclosed, in which a plurality of photosensitive drums corresponding to the respective colors are arranged along the outer peripheral surface of a transfer belt and a plurality of intermediate transfer rollers for applying a transfer field to the photosensitive drums are arranged offset downstream side from each of the photosensitive drums, respectively. In addition to that, the process, the intermediate transfer rollers are arranged in such positions that each of the nip width are increased progressively downstream side, respectively and each of the nip pressure are decreased progressively downstream side, respectively.

摘要翻译： 公开了一种转印装置和图像形成装置，其中对应于各种颜色的多个感光鼓沿着转印带的外周表面布置，并且多个中间转印辊用于向感光鼓施加转印场 分别设置成偏离每个感光鼓的下游侧。 除此之外，中间转印辊分别设置在各个辊隙宽度逐渐向下游侧增加的位置，并且辊隙压力分别逐渐下降。

公开(公告)号：US07062209B2

公开(公告)日：2006-06-13

申请号：US11035395

申请日：2005-01-12

申请人： Susumu Murakami ,  Yoshie Iwakura ,  Takahiro Fukunaga ,  Masanori Yamada ,  Kuniaki Nakano

发明人： Susumu Murakami ,  Yoshie Iwakura ,  Takahiro Fukunaga ,  Masanori Yamada ,  Kuniaki Nakano

IPC分类号： G03G15/01

CPC分类号： G03G15/165 ,  G03G15/0136 ,  G03G2215/0119

摘要： A transfer device has primary transfer rollers supported so as to be upwardly and downwardly movable within a path of movement and opposed to respective of photosensitive drums across a portion of an intermediate transfer belt. There are also provided a slide member for full-color image formation and a slide member for monochromatic image formation, which are capable of reciprocation in a horizontal direction. The transfer device includes roller lifting means each L-shaped and each having one end supporting an associated one of the transfer rollers for rotation and another end engaging an associated one of the slide members, and first and second coaxial rotating cams. The transfer device is capable of switching between three paths of movement of the intermediate transfer belt selectively by the first and second rotating cams rotating together.

摘要翻译： 传送装置具有支撑的一次转印辊，以便在运动路径内向上和向下移动，并与相应的感光鼓穿过中间转印带的一部分。 还提供了用于全色图像形成的滑动构件和用于单色图像形成的滑动构件，其能够在水平方向上往复运动。 传送装置包括每个L形的滚子提升装置，每个滚子提升装置的一端支撑相关联的一个传送辊，用于旋转，另一端接合相关的一个滑动构件以及第一和第二同轴旋转凸轮。 传送装置能够通过一起旋转的第一和第二旋转凸轮选择性地切换中间转印带的三个运动路径。

公开(公告)号：US20050141930A1

公开(公告)日：2005-06-30

申请号：US11021510

申请日：2004-12-22

申请人： Susumu Murakami ,  Takahiro Fukunaga ,  Yoshie Iwakura ,  Kuniaki Nakano ,  Hideshi Izumi ,  Minoru Tomiyori

发明人： Susumu Murakami ,  Takahiro Fukunaga ,  Yoshie Iwakura ,  Kuniaki Nakano ,  Hideshi Izumi ,  Minoru Tomiyori

IPC分类号： G03G15/00 ,  G03G15/01 ,  G03G15/14 ,  G03G15/16

CPC分类号： G03G15/1605 ,  G03G15/0131 ,  G03G2215/0119 ,  G03G2215/1623

摘要： A transfer device has a plurality of first transfer rollers provided, one in each of a plurality of first transfer regions. The first transfer rollers are arranged downstream of respective image carriers in a traveling direction of an intermediate transfer belt, so as to be out of contact with the image carriers through the belt. In the first transfer region that is located most upstream in the traveling direction, there is a pressure member provided upstream of the image carrier in the traveling direction for pressing the intermediate transfer belt against the image carrier.

摘要翻译： 传送装置具有设置在多个第一传送区域中的每一个中的多个第一传送辊。 第一转印辊在中间转印带的行进方向上布置在各个图像载体的下游，以便通过带与图像载体脱离接触。 在位于行进方向最上游的第一传送区域中，设置有用于将中间转印带按压在图像载体上的行进方向上游的图像载体的压力部件。

公开(公告)号：US20050141912A1

公开(公告)日：2005-06-30

申请号：US11021293

申请日：2004-12-22

申请人： Yoshie Iwakura ,  Susumu Murakami ,  Takahiro Fukunaga ,  Kuniaki Nakano ,  Hideshi Izumi ,  Minoru Tomiyori

发明人： Yoshie Iwakura ,  Susumu Murakami ,  Takahiro Fukunaga ,  Kuniaki Nakano ,  Hideshi Izumi ,  Minoru Tomiyori

IPC分类号： G03G15/16

CPC分类号： G03G15/1675

摘要： A transfer device has a control circuit. The control circuit initiates supplying transfer power to one or more first transfer rollers and to a second transfer roller when a first transfer operation is initiated by a first transfer roller positioned most upstream with respect to a direction in which an intermediate transfer belt travels. The control circuit stops supplying the transfer power to the one or more first transfer rollers and to the second transfer roller when a second transfer operation is completed by the second transfer roller. The transfer power supplied to the one or more first transfer rollers and to the second transfer roller, respectively, is free from fluctuation during a period from the initiation of the first transfer operation performed first to the completion of the second transfer operation.

摘要翻译： 传送装置具有控制电路。 当通过相对于中间转印带行进的方向位于最上游的第一转印辊开始第一转印操作时，控制电路开始向一个或多个第一转印辊和第二转印辊提供转印力。 当通过第二转印辊完成第二转印操作时，控制电路停止向一个或多个第一转印辊和第二转印辊供应转印电力。 在从首先执行的第一传送操作开始到完成第二传送操作的时间段期间，提供给一个或多个第一传送辊和第二传送辊的传送功率分别没有波动。

公开(公告)号：US20070172263A1

公开(公告)日：2007-07-26

申请号：US11730467

申请日：2007-04-02

申请人： Susumu Murakami ,  Takahiro Fukunaga ,  Yoshie Iwakura ,  Kuniaki Nakano ,  Hideshi Izumi ,  Minoru Tomiyori

发明人： Susumu Murakami ,  Takahiro Fukunaga ,  Yoshie Iwakura ,  Kuniaki Nakano ,  Hideshi Izumi ,  Minoru Tomiyori

IPC分类号： G03G15/01 ,  G03G15/16

CPC分类号： G03G15/1665 ,  G03G15/1685 ,  G03G2215/1614 ,  G03G2215/1623

摘要： A transfer device is provided including an intermediate transfer belt and transfer rollers associated with respective of photosensitive drums. Each of the transfer rollers and the intermediate transfer belt define therebetween a contact range of which center lies downstream of the center of a contact range (transfer nip region) defined between the associated photosensitive drum and the endless belt in the direction of movement of the endless belt. The transfer roller deforms the path of movement of the intermediate transfer belt by contacting the intermediate transfer belt, and the resulting deformation causes the intermediate transfer belt to contact the periphery of the photosensitive drum over a predetermined range.

公开(公告)号：US07236713B2

公开(公告)日：2007-06-26

申请号：US11192820

申请日：2005-07-29

申请人： Susumu Murakami ,  Yoshie Iwakura ,  Kuniaki Nakano

发明人： Susumu Murakami ,  Yoshie Iwakura ,  Kuniaki Nakano

IPC分类号： G03G15/16

CPC分类号： G03G15/1605 ,  G03G15/5029 ,  G03G2215/00573 ,  G03G2215/00738 ,  G03G2215/00776 ,  G03G2215/1614

摘要： In an image forming apparatus a primary transfer is carried out such that toner images on a plurality of photoreceptors are transferred and laminated onto an intermediate transfer member, and a recording paper and the intermediate transfer member are sandwiched between a secondary transfer roller disposed so as to be in contact with the intermediate transfer member and a secondary transfer counter roller disposed opposite to the secondary transfer roller, to carry out a secondary transfer that the toner images on the intermediate transfer member are transferred onto the recording paper. At the time, an electric field is applied to the recording paper, and further the secondary transfer counter roller is switched by a switch between grounded state and floating state so that a potential difference between the intermediate transfer member and the secondary transfer roller can be adjusted.

摘要翻译： 在图像形成装置中，进行一次转印，使得多个感光体上的调色剂图像被转印并层压到中间转印部件上，并且记录纸和中间转印部件被夹在二次转印辊之间， 与中间转印部件和与二次转​​印辊相对设置的二次转印反转辊接触，以进行将中间转印部件上的调色剂图像转印到记录纸上的二次转印。 此时，电场被施加到记录纸上，并且二次转印对辊由接地状态和浮动状态之间的开关切换，从而可以调节中间转印部件和二次转印辊之间的电位差 。