公开(公告)号：US06901234B2

公开(公告)日：2005-05-31

申请号：US10389979

申请日：2003-03-18

申请人： Hiromi Ogiyama ,  Katsuya Kawagoe ,  Shin Kayahara ,  Ryuuichi Minbu ,  Yuuji Sawai ,  Mitsuru Takahashi ,  Satoru Uchida ,  Hideki Kamiyama

发明人： Hiromi Ogiyama ,  Katsuya Kawagoe ,  Shin Kayahara ,  Ryuuichi Minbu ,  Yuuji Sawai ,  Mitsuru Takahashi ,  Satoru Uchida ,  Hideki Kamiyama

IPC分类号： G03G15/16

CPC分类号： G03G15/1675 ,  G03G2215/1623

摘要： An image forming apparatus of the present invention includes an intermediate image transfer belt passed over a plurality of support members and movable while carrying a toner image of preselected polarity transferred thereto. An electrode member contacts the inside surface of the belt and is applied with a preselected voltage for transferring the toner image from the belt to a recording medium. A contact member with high electric resistance contacts the belt at a position adjacent the electrode member and includes an insulating layer thereon.

摘要翻译： 本发明的图像形成装置包括通过多个支撑构件的中间图像转印带，并且在承载转印有预选极性的调色剂图像的同时可移动。 电极构件接触带的内表面并且施加预定电压以将调色剂图像从带传送到记录介质。 具有高电阻的接触构件在与电极构件相邻的位置处接触带，并且在其上包括绝缘层。

公开(公告)号：US06829450B2

公开(公告)日：2004-12-07

申请号：US10614828

申请日：2003-07-09

申请人： Takahiro Tamiya ,  Akihiro Sugino ,  Hiromi Ogiyama ,  Katsuya Kawagoe ,  Kohki Katoh ,  Mitsuru Takahashi ,  Yuuji Sawai

发明人： Takahiro Tamiya ,  Akihiro Sugino ,  Hiromi Ogiyama ,  Katsuya Kawagoe ,  Kohki Katoh ,  Mitsuru Takahashi ,  Yuuji Sawai

IPC分类号： G03G1516

CPC分类号： G03G15/0131 ,  G03G2215/0119

摘要： In an electrophotographic image forming apparatus of the type including a plurality of image carriers arranged along an image transfer belt and an image transferring device configured to transfer toner images of different colors from the image carriers to a sheet being conveyed by an image transfer belt or by way of the image transfer belt by applying a bias to the belt, a bias applying method of the present invention can measure a current leaking between a plurality of high-tension power supply sections or to the ends thereof as AC resistances between respective terminals and therefore to accurately measure the leak currents of DC components. Therefore, when relatively high DC components are selected, a difference in current between a plurality of power supply sections can be maintained constant.

摘要翻译： 在包括沿着图像转印带布置的多个图像载体的类型的电子照相图像形成装置中，以及图像转印装置，其被配置为将不同颜色的调色剂图像从图像载体转印到由图像转印带或由图像转印带传送的纸张 通过对带施加偏压，图像转印带的方式，本发明的偏压施加方法可以测量多个高压电源部分之间或其端部之间的电流作为各端子之间的交流电阻，因此 以准确测量直流分量的漏电流。 因此，当选择相对高的DC分量时，可以将多个电源部之间的电流差保持恒定。

公开(公告)号：US06785500B2

公开(公告)日：2004-08-31

申请号：US10193219

申请日：2002-07-12

申请人： Mitsuru Takahashi ,  Yuuji Sawai ,  Hiromi Ogiyama ,  Katsuya Kawagoe ,  Akihiro Sugino ,  Kohki Katoh

发明人： Mitsuru Takahashi ,  Yuuji Sawai ,  Hiromi Ogiyama ,  Katsuya Kawagoe ,  Akihiro Sugino ,  Kohki Katoh

IPC分类号： G03G1516

CPC分类号： G03G15/162 ,  G03G15/161 ,  G03G2215/0119 ,  G03G2215/1652 ,  G03G2215/1661

摘要： An image forming apparatus of the present invention includes a cleaning device for cleaning an intermediate image transfer body. A cleaning blade included in the image transfer body is formed of fluorocarbon resin or a thin layer of fluorocarbon resin is formed on the surface of the intermediate image transfer body. Further, wax is coated on the intermediate image transfer body or wax or lubricant powder is contained in toner. A moving mechanism holds the cleaning blade spaced from the intermediate image transfer body at least when image formation is not under way.

摘要翻译： 本发明的图像形成装置包括清洁中间图像转印体的清洁装置。 包含在图像转印体中的清洁刮板由氟碳树脂形成，或者在中间图像转印体的表面上形成氟碳树脂薄层。 此外，蜡涂覆在中间图像转印体上或蜡或者润滑剂粉末被包含在调色剂中。 至少当图像形成不进行时，移动机构将清洁刮板保持与中间图像传送体间隔开。

公开(公告)号：US06618565B2

公开(公告)日：2003-09-09

申请号：US10200178

申请日：2002-07-23

申请人： Takahiro Tamiya ,  Akihiro Sugino ,  Hiromi Ogiyama ,  Katsuya Kawagoe ,  Kohki Katoh ,  Mitsuru Takahashi ,  Yuuji Sawai

发明人： Takahiro Tamiya ,  Akihiro Sugino ,  Hiromi Ogiyama ,  Katsuya Kawagoe ,  Kohki Katoh ,  Mitsuru Takahashi ,  Yuuji Sawai

IPC分类号： G03G1516

CPC分类号： G03G15/0131 ,  G03G2215/0119

摘要： In an electrophotographic image forming apparatus of the type including a plurality of image carriers arranged along an image transfer belt and an image transferring device configured to transfer toner images of different colors from the image carriers to a sheet being conveyed by an image transfer belt or by way of the image transfer belt by applying a bias to the belt, a bias applying method of the present invention can measure a current leaking between a plurality of high-tension power supply sections or to the ends thereof as AC resistances between respective terminals and therefore to accurately measure the leak currents of DC components. Therefore, when relatively high DC components are selected, a difference in current between a plurality of power supply sections can be maintained constant.

摘要翻译： 在包括沿着图像转印带布置的多个图像载体的类型的电子照相图像形成装置中，以及图像转印装置，其被配置为将不同颜色的调色剂图像从图像载体转印到由图像转印带或由图像转印带传送的纸张 通过对带施加偏压，图像转印带的方式，本发明的偏压施加方法可以测量多个高压电源部分之间或其端部之间的电流作为各端子之间的交流电阻，因此 以准确测量直流分量的漏电流。 因此，当选择相对高的DC分量时，可以将多个电源部之间的电流差保持恒定。

公开(公告)号：US06611672B2

公开(公告)日：2003-08-26

申请号：US09960922

申请日：2001-09-25

申请人： Katsuhiro Aoki ,  Tsumori Satoh ,  Misao Tanzawa ,  Yuuji Sawai ,  Mitsuru Takahashi ,  Hajime Oyama ,  Sadayuki Iwai ,  Tohru Nakano

发明人： Katsuhiro Aoki ,  Tsumori Satoh ,  Misao Tanzawa ,  Yuuji Sawai ,  Mitsuru Takahashi ,  Hajime Oyama ,  Sadayuki Iwai ,  Tohru Nakano

IPC分类号： G03G2110

CPC分类号： G03G15/0194 ,  G03G15/0173 ,  G03G2215/0119

摘要： Monocolor image forming unit includes a developing device and an image carrier cleaning device arranged around an image carrier. A plurality of such the monocolor image forming unit is arrayed laterally along the rotary transport direction of an intermediate transfer member of the belt type to configure a tandem image forming device. In the tandem image forming device, a synthesized toner image is formed on the intermediate transfer member and transferred to a recording medium to form a multicolor image thereon. Among the plurality of monocolor image forming unit contained in the tandem image forming device, at least two monocolor image forming unit each include a toner recycling device for conveying toner collected at the image carrier cleaning device to the developing device.

公开(公告)号：US20140008184A1

公开(公告)日：2014-01-09

申请号：US13869286

申请日：2013-04-24

申请人： Yoshiki HOZUMI ,  Akira Asaoka ,  Yuuji Sawai ,  Kazuchika Saeki

发明人： Yoshiki HOZUMI ,  Akira Asaoka ,  Yuuji Sawai ,  Kazuchika Saeki

IPC分类号： B65G15/60

CPC分类号： B65G15/60 ,  B65G39/16 ,  G03G15/1615 ,  G03G2215/00156

摘要： A belt tracking system for controlling the lateral position of a movable belt entrained about a plurality of generally parallel rollers for moving in a trans-axial direction perpendicular to an axial direction in which the rollers extend parallel to each other includes a roller shaft, a stationary member, a slidable member, and a biasing mechanism. The roller shaft extends outward in the axial direction from an axial end of a specific one of the plurality of generally parallel rollers. The stationary member is fixed in position adjacent to the roller shaft to define a first interfacial surface therealong. The slidable member is co-movably coupled with the roller shaft to define a second interfacial surface therealong inclined relative to the axial direction. The biasing mechanism is connected to the roller shaft to press the slidable member against the stationary member.

摘要翻译： 用于控制夹带在多个大致平行的辊上的可移动带的横向位置的带跟踪系统，用于沿垂直于彼此平行延伸的轴向方向的轴向方向运动的横轴方向包括辊轴，固定 构件，滑动构件和偏置机构。 辊轴从多个大致平行的辊中的特定一个的轴向端部沿轴向向外延伸。 固定件固定在与辊轴相邻的位置上以限定其上的第一界面。 可滑动构件可与滚子轴共同移动地联接以限定相对于轴向方向倾斜的第二界面表面。 偏压机构连接到辊轴，以将可滑动构件压靠固定构件。

公开(公告)号：US20130306441A1

公开(公告)日：2013-11-21

申请号：US13859192

申请日：2013-04-09

申请人： Akira Asaoka ,  Kazuchika Saeki ,  Yuuji Sawai ,  Yoshiki Hozumi

发明人： Akira Asaoka ,  Kazuchika Saeki ,  Yuuji Sawai ,  Yoshiki Hozumi

IPC分类号： B65G15/64

CPC分类号： B65G15/64 ,  G03G15/1615 ,  G03G2215/00151

摘要： A belt positioning system for positioning a movable belt entrained about a plurality of generally parallel rollers for moving in a trans-axial direction perpendicular to an axial direction in which the rollers extend parallel to each other includes a tapered flange. The tapered flange is operatively connected to an axial end of a specific one of the plurality of generally parallel rollers, and includes a generally planar contact surface and an angled guide surface. The generally planar contact surface extends generally perpendicular to the axial direction to contact an adjoining edge of the belt. The angled guide surface extends radially outward from the contact surface and has a diameter increasing outward in the axial direction.

摘要翻译： 用于定位夹持在多个大致平行的辊上的可移动带的带定位系统，用于在垂直于辊彼此平行延伸的轴向方向的横轴方向上移动，包括锥形凸缘。 锥形凸缘可操作地连接到多个大致平行的辊中的特定一个的轴向端部，并且包括大致平面的接触表面和成角度的引导表面。 大致平面的接触表面大体上垂直于轴向方向延伸以接触带的相邻边缘。 成角度的引导表面从接触表面径向向外延伸并且具有在轴向方向上向外增加的直径。

公开(公告)号：US07953355B2

公开(公告)日：2011-05-31

申请号：US12508255

申请日：2009-07-23

申请人： Yuuji Sawai

发明人： Yuuji Sawai

IPC分类号： G03G15/01

CPC分类号： G03G15/162

摘要： A multi-layer endless belt member, which can be incorporated in a transfer unit for use in an image forming apparatus, includes a base layer and a surface layer disposed on the base layer and having a higher resistivity and has a first resistivity of a first surface thereof and a second resistivity of a second surface thereof opposite the first surface different from the first resistivity. The second resistivity of the second surface ranges from approximately 9.0 to approximately 12.5 in a common logarithm value (log [Ω/square]) when measured after 500V is applied for 10 seconds. An amount of resistivity change in the first resistivity ranges from approximately 0.5 to approximately 1.5 after application of 100V and is 0.2 or smaller after application of 500V. An amount of resistivity change in the second resistivity is 0.1 or smaller after application of 100V and 500V.

摘要翻译： 可以结合在用于图像形成装置的转印单元中的多层环形带构件包括基底层和设置在基底层上并具有较高电阻率并具有第一电阻率的第一电阻率的表面层 其表面和与第一电阻率不同的与第一表面相反的第二表面的第二电阻率。 当在500V施加10秒后测量时，第二表面的第二电阻率以约9.0至约12.5的常用对数值（log [＆OHgr / / square]）。 在施加100V后，第一电阻率的电阻率变化量为约0.5至约1.5，并且在施加500V后为0.2或更小。 在施加100V和500V之后，第二电阻率的电阻率变化量为0.1或更小。

公开(公告)号：US07860438B2

公开(公告)日：2010-12-28

申请号：US11748511

申请日：2007-05-15

申请人： Yuuji Sawai ,  Shinya Nakayama

发明人： Yuuji Sawai ,  Shinya Nakayama

IPC分类号： G03G15/01

CPC分类号： G03G15/0131 ,  G03G15/162 ,  G03G2215/0119 ,  G03G2215/1614

摘要： An image forming apparatus includes an image carrier, an endless belt whose front surface contacts the image carrier to form a transfer nip, and a bias applying roller configured to apply a transfer bias to a back surface of the endless belt. An image is formed of a toner having an additive embedded rate of not less than 40 percent and including a mother particle having a binder resin and a colorant, and an external additive. The bias applying roller is located so as to satisfy a relationship, L>(A/2)+(B/2)+C, where A is a diameter of the image carrier, B is a diameter of the bias applying roller, C is a thickness of the endless belt, and L is a distance between centers of the image carrier and the bias applying roller on a virtual plane perpendicular to an axis direction of the image carrier.

摘要翻译： 图像形成装置包括图像载体，其前表面接触图像载体以形成转印压区的环形带，以及构造成向环形带的后表面施加转印偏压的偏压施加辊。 图像由具有不小于40％的添加剂嵌入速率的调色剂形成，并且包括具有粘合剂树脂和着色剂的母体颗粒和外部添加剂。 偏置施加辊位于满足L>（A / 2）+（B / 2）+ C的关系，其中A是图像载体的直径，B是偏压施加辊的直径，C 是环形带的厚度，L是垂直于图像载体的轴线方向的虚拟平面上的图像载体和偏置施加辊的中心之间的距离。

公开(公告)号：US07610004B2

公开(公告)日：2009-10-27

申请号：US11677484

申请日：2007-02-21

申请人： Shinji Kato ,  Yuuji Sawai ,  Hiromi Ogiyama ,  Shin Kayahara ,  Atsushi Takehara ,  Ken Yoshida ,  Yoshihiro Fujiwara

发明人： Shinji Kato ,  Yuuji Sawai ,  Hiromi Ogiyama ,  Shin Kayahara ,  Atsushi Takehara ,  Ken Yoshida ,  Yoshihiro Fujiwara

IPC分类号： G03G15/01

CPC分类号： G03G15/5058 ,  G03G15/0131 ,  G03G2215/00029 ,  G03G2215/00059 ,  G03G2215/00063

摘要： An image forming apparatus includes a reference-pattern detecting transfer-body, a reference-pattern detecting unit, and a condition changing unit. The reference-pattern detecting transfer-body directly transfers a reference pattern image formed on an intermediate transfer body without a recording material. The reference-pattern detecting unit detects an optical reference pattern with respect to the image transferred onto the reference-pattern detecting transfer-body. The condition changing unit changes the image forming conditions based on a result of detection.

摘要翻译： 图像形成装置包括参考图案检测转印体，参考图案检测单元和条件改变单元。 参考图案检测转印体直接传送形成在中间转印体上的参考图案图像而没有记录材料。 参考图案检测单元检测相对于转印到参考图案检测转印体上的图像的光学参考图案。 条件改变单元根据检测结果改变图像形成条件。