公开(公告)号：US09274461B2

公开(公告)日：2016-03-01

申请号：US14254192

申请日：2014-04-16

申请人： Tsutomu Kato ,  Hirokazu Ishii ,  Takehide Mizutani ,  Shinya Tanaka ,  Yasufumi Takahashi ,  Osamu Ichihashi ,  Yuji Kato

发明人： Tsutomu Kato ,  Hirokazu Ishii ,  Takehide Mizutani ,  Shinya Tanaka ,  Yasufumi Takahashi ,  Osamu Ichihashi ,  Yuji Kato

IPC分类号： G03G15/16

CPC分类号： G03G15/1675

摘要： A transfer device includes a transfer member and a bias applicator. The transfer member contacts a surface, on which a toner image is borne, of an image bearing body, to form a transfer nip. The bias applicator applies a DC voltage and an AC voltage as transfer bias to transfer the toner image on the image bearing body to a recording sheet in the transfer nip. The bias applicator applies a DC voltage having a same polarity as the DC voltage of the transfer bias and an AC voltage having an amplitude smaller than the AC voltage of the transfer bias or applies the DC voltage having the same polarity as the DC voltage of the transfer bias without applying an AC voltage, when an inter-sheet area that exists on the image bearing body passes through the transfer nip during a continuous image formation period.

摘要翻译： 转印装置包括转印部件和偏置施加器。 转印构件与图像承载体的承载有调色剂图像的表面接触，以形成转印辊隙。 偏压施加器施加直流电压和交流电压作为转印偏压，以将图像承载体上的调色剂图像转印到转印压区中的记录纸上。 偏压施加器施加具有与转印偏压的DC电压相同极性的DC电压和具有小于转印偏压的AC电压的幅度的AC电压，或施加具有与所述转印偏压的DC电压相同极性的DC电压 当连续图像形成期间存在于图像承载体上的片间区域通过转印辊隙时，不施加交流电压的转印偏压。

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。

公开(公告)号：US09395659B2

公开(公告)日：2016-07-19

申请号：US14259337

申请日：2014-04-23

申请人： Shinya Tanaka ,  Hirokazu Ishii ,  Tsutomu Kato ,  Yasufumi Takahashi ,  Takehide Mizutani ,  Osamu Ichihashi ,  Yuji Kato ,  Atsushi Nagata ,  Kazuosa Kuma ,  Ryo Hasegawa ,  Haruki Nagata ,  Naoto Kochi

发明人： Shinya Tanaka ,  Hirokazu Ishii ,  Tsutomu Kato ,  Yasufumi Takahashi ,  Takehide Mizutani ,  Osamu Ichihashi ,  Yuji Kato ,  Atsushi Nagata ,  Kazuosa Kuma ,  Ryo Hasegawa ,  Haruki Nagata ,  Naoto Kochi

IPC分类号： G03G15/16

CPC分类号： G03G15/1675 ,  G03G15/1605

摘要： An image forming apparatus includes an image carrier that carries a toner image; a transfer member that forms a transfer nip between the transfer member and the image carrier; and a power supply capable of outputting a superimposed transfer bias in which an alternating current component is superimposed onto a direct current component. The toner image on the image carrier is transferred onto a recording medium in the transfer nip by the superimposed transfer bias or a direct current bias consisting of the direct current component output by the power supply. The apparatus also includes a controller that controls the power supply so that an output target value of the direct current component when the direct current component rises up is larger than an output target value of the direct current component when the toner image is transferred onto the recording medium.

摘要翻译： 图像形成装置包括承载调色剂图像的图像载体; 转印部件，其在转印部件和图像载体之间形成转印辊隙; 以及能够输出叠加在直流分量上的交流分量的叠加转印偏压的电源。 图像载体上的调色剂图像通过叠加的转印偏压或由电源输出的直流分量组成的直流偏压转印到转印辊隙中的记录介质上。 该装置还包括控制器，其控制电源，使得当直流分量上升时直流分量的输出目标值大于当调色剂图像被转印到记录上时的直流分量的输出目标值 中。

公开(公告)号：US20140328604A1

公开(公告)日：2014-11-06

申请号：US14259337

申请日：2014-04-23

申请人： Shinya TANAKA ,  Hirokazu Ishii ,  Tsutomu Kato ,  Yasufumi Takahashi ,  Takehide Mizutani ,  Osamu Ichihashi ,  Yuji Kato ,  Atsushi Nagata ,  Kazuosa Kuma ,  Ryo Hasegawa ,  Haruki Nagata ,  Naoto Kochi

发明人： Shinya TANAKA ,  Hirokazu Ishii ,  Tsutomu Kato ,  Yasufumi Takahashi ,  Takehide Mizutani ,  Osamu Ichihashi ,  Yuji Kato ,  Atsushi Nagata ,  Kazuosa Kuma ,  Ryo Hasegawa ,  Haruki Nagata ,  Naoto Kochi

IPC分类号： G03G15/16

CPC分类号： G03G15/1675 ,  G03G15/1605

摘要： An image forming apparatus includes an image carrier that carries a toner image; a transfer member that forms a transfer nip between the transfer member and the image carrier; and a power supply capable of outputting a superimposed transfer bias in which an alternating current component is superimposed onto a direct current component. The toner image on the image carrier is transferred onto a recording medium in the transfer nip by the superimposed transfer bias or a direct current bias consisting of the direct current component output by the power supply. The apparatus also includes a controller that controls the power supply so that an output target value of the direct current component when the direct current component rises up is larger than an output target value of the direct current component when the toner image is transferred onto the recording medium.

摘要翻译： 图像形成装置包括承载调色剂图像的图像载体; 转印部件，其在转印部件和图像载体之间形成转印辊隙; 以及能够输出叠加在直流分量上的交流分量的叠加转印偏压的电源。 图像载体上的调色剂图像通过叠加的转印偏压或由电源输出的直流分量组成的直流偏压转印到转印辊隙中的记录介质上。 该装置还包括控制器，其控制电源，使得当直流分量上升时直流分量的输出目标值大于当调色剂图像被转印到记录上时的直流分量的输出目标值 中。

公开(公告)号：US20140314435A1

公开(公告)日：2014-10-23

申请号：US14254192

申请日：2014-04-16

申请人： Tsutomu KATO ,  Hirokazu Ishii ,  Takehide Mizutani ,  Shinya Tanaka ,  Yasufumi Takahashi ,  Osamu Ichihashi ,  Yuji Kato

发明人： Tsutomu KATO ,  Hirokazu Ishii ,  Takehide Mizutani ,  Shinya Tanaka ,  Yasufumi Takahashi ,  Osamu Ichihashi ,  Yuji Kato

IPC分类号： G03G15/16

CPC分类号： G03G15/1675

摘要： A transfer device includes a transfer member and a bias applicator. The transfer member contacts a surface, on which a toner image is borne, of an image bearing body, to form a transfer nip. The bias applicator applies a DC voltage and an AC voltage as transfer bias to transfer the toner image on the image bearing body to a recording sheet in the transfer nip. The bias applicator applies a DC voltage having a same polarity as the DC voltage of the transfer bias and an AC voltage having an amplitude smaller than the AC voltage of the transfer bias or applies the DC voltage having the same polarity as the DC voltage of the transfer bias without applying an AC voltage, when an inter-sheet area that exists on the image bearing body passes through the transfer nip during a continuous image formation period.

摘要翻译： 转印装置包括转印部件和偏置施加器。 转印构件与图像承载体的承载有调色剂图像的表面接触，以形成转印辊隙。 偏压施加器施加直流电压和交流电压作为转印偏压，以将图像承载体上的调色剂图像转印到转印压区中的记录纸上。 偏压施加器施加具有与转印偏压的DC电压相同极性的DC电压和具有小于转印偏压的AC电压的幅度的AC电压，或施加具有与所述转印偏压的DC电压相同极性的DC电压 当连续图像形成期间存在于图像承载体上的片间区域通过转印辊隙时，不施加交流电压的转印偏压。

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。

公开(公告)号：US09037042B2

公开(公告)日：2015-05-19

申请号：US13845780

申请日：2013-03-18

申请人： Yuji Kato ,  Yasufumi Takahashi ,  Osamu Ichihashi

发明人： Yuji Kato ,  Yasufumi Takahashi ,  Osamu Ichihashi

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

CPC分类号： G03G15/14 ,  G03G15/0131 ,  G03G15/0189 ,  G03G15/161 ,  G03G15/168

摘要： An image forming apparatus includes: a transfer unit that is detachably attachable to a housing of the image forming apparatus and includes: a transfer member configured to contact the image carrier; a movable frame that supports the transfer member and configured to rotate around a fulcrum shaft; a driving input member coaxially arranged with the fulcrum shaft and configured to connect to a first driving transmitting member, and a second driving transmitting member supported by the movable frame and configured to transmit a driving force inputted by the driving input member to the transfer member. The image forming apparatus further includes a contact/separation unit configured to press the transfer member against the image carrier and to separate the transfer member from the image carrier by moving the movable frame around the fulcrum shaft while the transfer unit is attached to the image forming apparatus.

摘要翻译： 图像形成装置包括：可拆卸地附接到图像形成装置的壳体的传送单元，包括：被配置为接触图像载体的传送部件; 可移动框架，其支撑所述转印构件并且构造成围绕支点轴旋转; 驱动输入部件，其与所述支点轴同轴布置并且被构造成连接到第一驱动传递部件;以及第二驱动传递部件，其由所述可动框架支撑并且被配置为将由所述驱动输入部件输入的驱动力传递到所述传送部件。 图像形成装置还包括接触/分离单元，该接触/分离单元构造成将转印构件压靠在图像载体上，并且通过使可移动框架围绕支点轴移动而将转印构件与图像载体分离，同时将转印单元附接到图像形成 仪器。

公开(公告)号：US09141039B2

公开(公告)日：2015-09-22

申请号：US14018525

申请日：2013-09-05

申请人： Yuji Kato ,  Ryuuichi Mimbu ,  Yasufumi Takahashi ,  Kenji Sengoku ,  Junpei Fujita ,  Osamu Ichihashi

发明人： Yuji Kato ,  Ryuuichi Mimbu ,  Yasufumi Takahashi ,  Kenji Sengoku ,  Junpei Fujita ,  Osamu Ichihashi

IPC分类号： G03G15/08 ,  G03G15/00 ,  G03G15/16

CPC分类号： G03G15/1605 ,  G03G15/167

摘要： An image forming apparatus includes an image forming unit; an intermediate transfer member; a secondary transfer member to form a secondary transfer nip with the intermediate transfer member and the secondary transfer member; a biasing mechanism to bias the secondary transfer member toward the intermediate transfer member; a cam member rotatable between a first position, at which a predetermined space is formed in the secondary transfer nip, and a second position, at which the secondary transfer member and the intermediate transfer member contact each other; and a contact-separation controller configured to put the cam member in the first position before entry of the recording medium into the secondary transfer nip, rotate the cam member toward the second position when the recording medium enters the secondary transfer nip, and change a start timing of rotation of the cam member in accordance with a thickness of the recording medium.

摘要翻译： 图像形成装置包括图像形成单元; 中间转印部件; 二次转印部件，用于与中间转印部件和二次转印部件形成二次转印辊隙; 偏压机构，用于将二次转印构件偏压到中间转印构件; 在第二位置和第二位置之间可旋转的凸轮构件，第二位置在第二位置和第二位置之间转动，第二位置在第二位置和第二位置之间转动，第二位置在二次转印构件和中间转印构件之间相互接触; 以及接触分离控制器，被配置为在记录介质进入二次转印夹持部之前将凸轮部件置于第一位置，当记录介质进入二次转印夹持部时，将凸轮部件朝向第二位置旋转，并且改变开始 凸轮构件根据记录介质的厚度旋转的时间。

公开(公告)号：US20140072340A1

公开(公告)日：2014-03-13

申请号：US14018525

申请日：2013-09-05

申请人： Yuji KATO ,  Ryuuichi Mimbu ,  Yasufumi Takahashi ,  Kenji Sengoku ,  Junpei Fujita ,  Osamu Ichihashi

发明人： Yuji KATO ,  Ryuuichi Mimbu ,  Yasufumi Takahashi ,  Kenji Sengoku ,  Junpei Fujita ,  Osamu Ichihashi

IPC分类号： G03G15/16 ,  G03G15/01

CPC分类号： G03G15/1605 ,  G03G15/167

摘要： An image forming apparatus includes an image forming unit; an intermediate transfer member; a secondary transfer member to form a secondary transfer nip with the intermediate transfer member and the secondary transfer member; a biasing mechanism to bias the secondary transfer member toward the intermediate transfer member; a cam member rotatable between a first position, at which a predetermined space is formed in the secondary transfer nip, and a second position, at which the secondary transfer member and the intermediate transfer member contact each other; and a contact-separation controller configured to put the cam member in the first position before entry of the recording medium into the secondary transfer nip, rotate the cam member toward the second position when the recording medium enters the secondary transfer nip, and change a start timing of rotation of the cam member in accordance with a thickness of the recording medium.

摘要翻译： 图像形成装置包括图像形成单元; 中间转印部件; 二次转印部件，用于与中间转印部件和二次转印部件形成二次转印辊隙; 偏压机构，用于将二次转印构件偏压到中间转印构件; 在第二位置和第二位置之间可旋转的凸轮构件，第二位置在第二位置和第二位置之间转动，第二位置在第二位置和第二位置之间转动，在第二位置，二次转印构件和中间转印构件相互接触; 以及接触分离控制器，被配置为在记录介质进入二次转印夹持部之前将凸轮部件置于第一位置，当记录介质进入二次转印夹持部时，将凸轮部件朝向第二位置旋转，并且改变开始 凸轮构件根据记录介质的厚度旋转的时间。

公开(公告)号：US20180157209A1

公开(公告)日：2018-06-07

申请号：US15831566

申请日：2017-12-05

申请人： Junpei Fujita ,  Katsuhito Haruno ,  Atsushi Nakamoto ,  Masakazu Imai ,  Osamu Ichihashi ,  Takehide Mizutani ,  Naoto Kochi

发明人： Junpei Fujita ,  Katsuhito Haruno ,  Atsushi Nakamoto ,  Masakazu Imai ,  Osamu Ichihashi ,  Takehide Mizutani ,  Naoto Kochi

IPC分类号： G03G15/16

CPC分类号： G03G21/0094 ,  G03G15/161 ,  G03G15/1675 ,  G03G15/5008 ,  G03G21/0011 ,  G03G2215/00059

摘要： A transfer device includes an image bearer, a rotatable body, a solid lubricant assembly, and a guide. An image bearer bears an image. The rotatable body forms a transfer nip with the image bearer to rotate in contact with a recording medium. An image on the image bearer is transferred onto the recording medium at the transfer nip. The solid lubricant assembly includes a solid lubricant and extends in a longitudinal direction of the rotatable body. The solid lubricant assembly applies a solid lubricant to at least one of the rotatable body and the image bearer. The guide guides the recording medium and positions the solid lubricant assembly.