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1. 发明授权

US09897946B2 Roller member including a first and second high resistance member and image forming apparatus including the roller member 有权
公开(公告)号：US09897946B2
公开(公告)日：2018-02-20
申请号：US15374167
申请日：2016-12-09
申请人： Masakazu Imai , Masaharu Furuya , Tsutomu Kato , Katsuhito Haruno , Osamu Ichihashi , Tatsuya Ohsugi
发明人： Masakazu Imai , Masaharu Furuya , Tsutomu Kato , Katsuhito Haruno , Osamu Ichihashi , Tatsuya Ohsugi
IPC分类号： G03G15/01 , G03G15/16
CPC分类号： G03G15/162 , G03G15/1685
摘要： A roller member includes a cored bar, an elastic layer, a first high resistance member, and a second high resistance member. The elastic layer is disposed on an outer circumferential face of the cored bar. The cored bar has a projecting portion projecting beyond a range in which the elastic layer is disposed, toward an axial end of the cored bar. The first high resistance member is made of a high-resistance material having a higher electrical resistance than an electrical resistance of the cored bar. The first high resistance member is fitted to the projecting portion. The second high resistance member is made of a high-resistance material having a higher electrical resistance than an electrical resistance of the cored bar. The second high resistance member fills a space between the first high resistance member and the elastic layer.

2. 发明申请

US20170010566A1 TRANSFER DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME 有权
标题翻译：传输装置和成像装置的图像形成装置
公开(公告)号：US20170010566A1
公开(公告)日：2017-01-12
申请号：US15191463
申请日：2016-06-23
申请人： Tsutomu Kato , Masakazu Imai , Osamu Ichihashi , Katsuhito Haruno , Takahiro Konishi
发明人： Tsutomu Kato , Masakazu Imai , Osamu Ichihashi , Katsuhito Haruno , Takahiro Konishi
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/1605 , G03G2215/00447 , G03G2215/00738 , G03G2215/00751 , G03G2215/0129
摘要： A transfer device includes an image bearer and a transfer rotator. The transfer device further includes an adjuster including a rotatable cam and an opposed member opposed to the cam. The cam alternately contacts and separates the transfer rotator against and from the image bearer, having a continuous sloped surface with a plurality of positions, each position to contact the opposed member to obtain a different amount of separation between the image bearer and the transfer rotator. The transfer device further includes a controller to control the adjuster to adjust the amount of separation between the transfer rotator and the image bearer according to thickness or type of the recording medium when the recording medium starts to enter the transfer nip.
摘要翻译：传送设备包括图像承载和传送旋转器。传送装置还包括一个包括可旋转凸轮和与该凸轮相对的相对构件的调节器。凸轮交替地将传送旋转体与图像承载体接触并分离，具有具有多个位置的连续倾斜表面，每个位置接触相对构件，以获得图像承载体与转印旋转体之间的不同的间隔量。传送装置还包括控制器，用于控制调节器，以便当记录介质开始进入转印辊隙时根据记录介质的厚度或类型来调节转印旋转器和图像承载件之间的间隔量。

3. 发明授权

US09256165B2 Transfer device and image forming apparatus incorporating same 有权
标题翻译：转印装置和包含其的图像形成装置
公开(公告)号：US09256165B2
公开(公告)日：2016-02-09
申请号：US14272810
申请日：2014-05-08
申请人： Yasufumi Takahashi , Osamu Ichihashi , Yuji Kato , Junpei Fujita
发明人： Yasufumi Takahashi , Osamu Ichihashi , Yuji Kato , Junpei Fujita
IPC分类号： G03G15/08 , G03G15/16
CPC分类号： G03G15/1605 , G03G2215/0129
摘要： A transfer device includes an image carrier, a transfer roller, and a moving unit. The moving unit moves the transfer roller between a nip formation state in which the transfer roller forms a transfer nipping portion in contact with the image carrier and a separated state in which the transfer roller is separated from the image carrier. In a contact operation of bringing the transfer roller into contact with the image carrier via the recording medium, the moving unit moves the transfer roller toward the image carrier at a moving velocity slower than that in a pressing operation of generating a predetermined nipping pressure by further moving the transfer roller toward the image carrier after the contact operation. The moving unit causes the recording medium to enter the transfer nipping portion in the contact operation.
摘要翻译：转印装置包括图像载体，转印辊和移动单元。移动单元在转印辊形成与图像载体接触的转印夹持部分的辊隙形成状态和转印辊与图像载体分离的分离状态下移动转印辊。在使转印辊经由记录介质与图像载体接触的接触操作中，移动单元以比产生预定压接压力的按压操作更慢的移动速度将转印辊移动到图像载体在接触操作后将转印辊移向图像载体。移动单元在接触操作中使记录介质进入转印夹持部分。

4. 发明授权

US09213272B2 Image forming apparatus including a holding member to hold a roller relative to a frame 有权
标题翻译：图像形成装置包括用于相对于框架保持辊的保持构件
公开(公告)号：US09213272B2
公开(公告)日：2015-12-15
申请号：US13644471
申请日：2012-10-04
申请人： Osamu Ichihashi , Yasufumi Takahashi , Junpei Fujita
发明人： Osamu Ichihashi , Yasufumi Takahashi , Junpei Fujita
IPC分类号： G03G15/14 , G03G15/16 , G03G15/01
CPC分类号： G03G15/1615 , G03G15/0131 , G03G15/0189 , G03G2215/0158
摘要： An image forming apparatus includes multiple image bearing members, toner image forming devices, and a transfer unit. The transfer unit includes an intermediate transfer belt entrained about a plurality of rollers and onto which toner images are transferred from the image bearing members, a reference member to position the transfer unit in place, a frame to hold the plurality of rollers a certain distance from the reference member, and a moving device including a holding member to hold movably one of the rollers relative to the frame to change the position of the roller between a multiple color mode for forming a multiple color image and a single color mode for forming a single color image so that the intermediate transfer belt contacts and separates from the image bearing member. As the holding member contacts the reference member, the intermediate transfer belt contacts the image bearing members.
摘要翻译：图像形成装置包括多个图像承载部件，调色剂图像形成装置和转印单元。转印单元包括夹带在多个辊上的中间转印带，并且从图像承载部件转印到哪个调色剂图像上，参考部件将转印单元定位在适当的位置，用于将多个辊保持一定距离的框架参考构件和移动装置，其包括保持构件，用于相对于框架可移动地保持辊子之一，以在用于形成多色图像的多色模式和用于形成单个颜色的单色模式之间改变滚子的位置使得中间转印带与图像承载部件接触并分离。当保持构件接触基准构件时，中间转印带与图像承载构件接触。

5. 发明授权

US09134656B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US09134656B2
公开(公告)日：2015-09-15
申请号：US14256178
申请日：2014-04-18
申请人： Takehide Mizutani , Hirokazu Ishii , Tsutomu Kato , Yasufumi Takahashi , Shinya Tanaka , Osamu Ichihashi , Yuji Kato
发明人： Takehide Mizutani , Hirokazu Ishii , Tsutomu Kato , Yasufumi Takahashi , Shinya Tanaka , Osamu Ichihashi , Yuji Kato
IPC分类号： G03G21/00 , G03G15/00 , G03G15/16
CPC分类号： G03G15/1605 , G03G15/1675
摘要： An image forming apparatus includes an image carrier, a transfer member, a power supply, and a control device that controls the power supply to output a DC-AC superimposed bias or a DC bias to transfer a toner image on the image carrier onto a recording medium. The control device controls the power supply to alternately output a first bias being a DC component the same in polarity as the DC bias and a second bias being a DC component opposite in polarity to the DC bias to clean the transfer member when image formation is not taking place. The first bias is output with two target output values including a first value and a second value lower than the first value. The second bias is output with one target output value. An output time of the second bias is longer than an output time of the first bias.
摘要翻译：图像形成装置包括图像载体，转印构件，电源和控制装置，其控制电源以输出DC-AC叠加偏置或DC偏压，以将图像载体上的调色剂图像转印到记录中。控制装置控制电源以交替地输出与DC偏压极性相同的DC分量的第一偏压，并且第二偏压是与DC偏压极性相反的DC分量，以在图像形成不是时直接清洁转印部件发生。输出第一偏置，其中两个目标输出值包括第一值和低于第一值的第二值。第二个偏置输出一个目标输出值。第二偏压的输出时间长于第一偏压的输出时间。

6. 发明授权

US08718500B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US08718500B2
公开(公告)日：2014-05-06
申请号：US12708983
申请日：2010-02-19
申请人： Ryuichi Minbu , Kenji Sengoku , Junpei Fujita , Osamu Ichihashi
发明人： Ryuichi Minbu , Kenji Sengoku , Junpei Fujita , Osamu Ichihashi
IPC分类号： G03G15/16
CPC分类号： G03G15/0131 , G03G15/161
摘要： To provide an image forming apparatus capable of increasing the life of a rotating cam while preventing the occurrence of a shock jitter and transfer failure. The image forming apparatus is configured to execute a forced movement process for rotating the rotating cam to forcibly move a secondary transfer roller against a biasing force of a bias coil spring at a pre-entry timing prior to the entry of the front edge of a recording sheet into a secondary transfer position, and a pressure intensifying process for rotating the rotating cam to increase transfer pressure at a timing immediately after the entry of the front edge of the recording sheet into the secondary transfer position. As the forced movement process, the image forming apparatus executes, alternately, a first forced movement process for normally driving and rotating the rotating cam, and a second forced movement process for inversely driving and rotating the rotating cam, at a predetermined timing.
摘要翻译：提供能够在防止发生震动抖动和转印失败的同时延长旋转凸轮的寿命的图像形成装置。图像形成装置被配置为执行强制移动处理，用于使旋转凸轮旋转，以抵抗偏置螺旋弹簧的偏置力强迫移动二次转印辊，在进入记录的前边缘之前的预录入时刻以及用于使旋转凸轮旋转以在紧接在记录纸的前边缘进入二次转印位置之后的定时增加转印压力的增压过程。作为强制移动处理，图像形成装置交替地执行用于正常地驱动和旋转旋转凸轮的第一强制移动处理和用于在预定定时反转驱动和旋转旋转凸轮的第二强制移动处理。

7. 发明授权

US08433221B2 Image forming apparatus with transfer nip adjustment function 有权
公开(公告)号：US08433221B2
公开(公告)日：2013-04-30
申请号：US12628649
申请日：2009-12-01
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： G03G15/08
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.

8. 发明申请

US20120237260A1 IMAGE FORMING APPARATUS AND BELT TENSIONING UNIT 有权
标题翻译：图像形成装置和皮带张紧装置
公开(公告)号：US20120237260A1
公开(公告)日：2012-09-20
申请号：US13415170
申请日：2012-03-08
申请人： Kenji SENGOKU , Ryuuichi Mimbu , Junpei Fujita , Osamu Ichihashi
发明人： Kenji SENGOKU , Ryuuichi Mimbu , Junpei Fujita , Osamu Ichihashi
IPC分类号： G03G15/00 , B65G23/44 , B65G45/10
CPC分类号： G03G15/161 , G03G15/1615 , G03G2215/0129 , G03G2215/0193 , G03G2215/1661
摘要： An image forming apparatus includes: a belt unit that includes a belt-shaped image carrier stretched around and driven to rotate by a plurality of rollers; a belt tensioning unit that includes a tensioning member that is brought into contact with an image carrying surface of the belt-shaped image carrier and applies tension to the belt-shaped image carrier; and a cleaning unit that includes a cleaning member that is brought into contact with the image carrying surface of the belt-shaped image carrier and cleans the image carrying surface. The cleaning unit is supported by the belt tensioning unit in an attachable and detachable manner.
摘要翻译：图像形成装置包括：带单元，其包括被多个辊延伸并被多个辊旋转的带状图像载体; 带张紧单元，其包括与带状图像载体的图像承载表面接触并且向带状图像载体施加张力的张紧构件; 以及清洁单元，其包括与带状图像载体的图像承载表面接触并清洁图像承载表面的清洁构件。清洁单元由皮带张紧单元以可附接和可拆卸的方式支撑。

9. 发明申请

US20110286759A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20110286759A1
公开(公告)日：2011-11-24
申请号：US13093217
申请日：2011-04-25
申请人： Osamu ICHIHASHI , Ryuuichi Mimbu , Kenji Sengoku , Junpei Fujita
发明人： Osamu ICHIHASHI , Ryuuichi Mimbu , Kenji Sengoku , Junpei Fujita
IPC分类号： G03G15/00 , G03G15/16
CPC分类号： G03G15/1665 , G03G15/167 , G03G2215/0129 , G03G2215/0193
摘要： An image forming apparatus includes a contact member supplied with voltage by a voltage application device, to contact an object; a rotary member rotatable about a rotation fulcrum shaft fixed to an image forming apparatus, to support the contact member; an biasing member to urge the rotary member to press the contact member against the object; a rotary conductive member fixed to the rotary member and connected electrically to the contact member; a main body side conductive member fixed to the rotation fulcrum shaft at the main body side and connected electrically to the voltage application device; and a conductive connector provided along the rotation fulcrum shaft to contact the rotary conductive member in an axial direction to connect electrically the main body side conductive member and the rotary conductive member. A contact of the conductive connector and a contact of the rotary conductive member are unfixed.
摘要翻译：图像形成装置包括由电压施加装置供给电压的接触构件，以接触物体; 旋转构件，可绕固定到图像形成装置的旋转支点轴旋转，以支撑所述接触构件; 偏压构件，其推动所述旋转构件将所述接触构件压靠在所述物体上; 旋转导电构件，其固定到所述旋转构件并且电连接到所述接触构件; 主体侧导电构件，其固定在主体侧的旋转支点轴上，并与电压施加装置电连接; 以及沿着旋转支点轴设置的导电连接器，以沿轴向接触旋转导电构件，以将主体侧导电构件和旋转导电构件电连接。导电连接器和旋转导电构件的触点的接触不固定。

10. 发明申请

US20100272478A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20100272478A1
公开(公告)日：2010-10-28
申请号：US12762678
申请日：2010-04-19
申请人： Osamu Ichihashi
发明人： Osamu Ichihashi
IPC分类号： G03G15/01
CPC分类号： G03G15/0136 , G03G15/1605 , G03G15/161 , G03G15/1615 , G03G15/5054 , G03G2215/00059 , G03G2215/0193 , G03G2221/1642
摘要： An image forming apparatus includes a plurality of N image carriers including first through Nth image carriers, a transfer unit including an endless transfer belt, a plurality of M belt supporting members including a plurality of first through Nth nip opposing members contacting the inner surface of the endless transfer belt at positions corresponding to where the plurality of N image carriers contacts the outer surface of the endless transfer belt to form N transfer nips thereat, the first opposing member defining a first supported area of the endless transfer belt, a contact and separation mechanism including a retaining unit to move the first supported area of the endless transfer belt into and out of contact with the first image carrier, and a mark detector to detect a plurality of adjacent marks formed at a predetermined pitch in a circumferential direction of the endless transfer belt.
摘要翻译：图像形成装置包括多个N个图像载体，包括第一至第N图像载体，转移单元，包括环形转移带，多个M个带状支撑构件，其包括多个第一至第N个夹持部件，环形转印带在与多个N个图像载体接触环形转印带的外表面的位置相对应的位置处形成N个转印辊隙，第一相对构件限定环形转印带的第一支撑区域，接触和分离机构包括保持单元，用于将环形转印带的第一支撑区域移动到与第一图像载体接触和脱离接触;以及标记检测器，用于检测在循环传送的圆周方向上以预定间距形成的多个相邻标记带。

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