公开(公告)号：US10281848B2

公开(公告)日：2019-05-07

申请号：US15427735

申请日：2017-02-08

申请人： Yuuji Wada ,  Naoto Kochi ,  Hiroki Nakamatsu ,  Kazuki Yogosawa ,  Takahiro Suzuki ,  Shinya Tanaka ,  Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Hirokazu Ishii ,  Takehide Mizutani ,  Atsushi Nagata ,  Keigo Nakamura

发明人： Yuuji Wada ,  Naoto Kochi ,  Hiroki Nakamatsu ,  Kazuki Yogosawa ,  Takahiro Suzuki ,  Shinya Tanaka ,  Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Hirokazu Ishii ,  Takehide Mizutani ,  Atsushi Nagata ,  Keigo Nakamura

IPC分类号： G03G15/16 ,  G03G15/00

摘要： An improved image forming apparatus includes an image bearer, a nip forming member, a transfer power source, and a controller. The controller switches a transfer mode between a first mode to transfer the toner image onto a first type sheet having a surface smoothness higher than a surface smoothness of a second type sheet and a second mode to transfer the toner image onto the second type sheet. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of greater than or equal to 50% that is a duty on the side of the opposite-peak value in the first mode. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of less than 50%, which is different from the opposite-peak duty of the first mode, in the second mode.

公开(公告)号：US10101690B2

公开(公告)日：2018-10-16

申请号：US15596365

申请日：2017-05-16

申请人： Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Yuuji Wada ,  Jyunya Sakuraba

发明人： Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Yuuji Wada ,  Jyunya Sakuraba

IPC分类号： G03G15/16

摘要： An image forming apparatus includes an image bearer including a first image portion to bear a first toner image, a second image portion to bear a second toner image, and a non-image portion to bear an adjustment pattern. A transferor forms a transfer nip with the image bearer. A controller controls the power source to output an image bias as a transfer bias to transfer the first toner image and the second toner image onto a first recording medium and a second recording medium, respectively, in the transfer nip when the first image portion and the second image portion pass through the transfer nip and output a non-image bias as the transfer bias when the non-image portion passes through the transfer nip. The controller performs a constant current control on the image bias and performs a constant voltage control when the image bias switches to the non-image bias.

公开(公告)号：US20180059583A1

公开(公告)日：2018-03-01

申请号：US15690484

申请日：2017-08-30

申请人： Naohiro KUMAGAI ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Yuugi Wada

发明人： Naohiro KUMAGAI ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Yuugi Wada

IPC分类号： G03G15/00 ,  G03G15/16

CPC分类号： G03G15/1605 ,  G03G15/1615

摘要： An image forming apparatus includes an image bearer, an intermediate transferor, a secondary transferor, a plurality of rotators including a secondary driving rotator, and a detector. The image bearer bears a detection image. The detection image is transferred from the image bearer to the intermediate transferor at a primary transfer position. The secondary transferor is looped around the plurality of rotators and disposed in contact with the intermediate transferor at a secondary transfer position where the detection image is transferred from the intermediate transferor to the secondary transferor. The secondary driving rotator drives the secondary transferor. The detector detects the detection image on the secondary transferor at a detection position. With this configuration, a distance from the secondary transfer position to the detection position on the secondary transferor is an integral multiple of a circumference of the secondary driving rotator.

公开(公告)号：US20170329263A1

公开(公告)日：2017-11-16

申请号：US15596365

申请日：2017-05-16

申请人： Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Yuuji Wada ,  Jyunya Sakuraba

发明人： Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Yuuji Wada ,  Jyunya Sakuraba

IPC分类号： G03G15/16

CPC分类号： G03G15/1665 ,  G03G15/0189 ,  G03G15/1605 ,  G03G15/1675 ,  G03G15/5058

摘要： An image forming apparatus includes an image bearer including a first image portion to bear a first toner image, a second image portion to bear a second toner image, and a non-image portion to bear an adjustment pattern. A transferor forms a transfer nip with the image bearer. A controller controls the power source to output an image bias as a transfer bias to transfer the first toner image and the second toner image onto a first recording medium and a second recording medium, respectively, in the transfer nip when the first image portion and the second image portion pass through the transfer nip and output a non-image bias as the transfer bias when the non-image portion passes through the transfer nip. The controller performs a constant current control on the image bias and performs a constant voltage control when the image bias switches to the non-image bias.

公开(公告)号：US09811046B2

公开(公告)日：2017-11-07

申请号：US15189699

申请日：2016-06-22

申请人： Yuuji Wada ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugirua ,  Takehide Mizutani ,  Tatsuya Ohsugi ,  Hiroyoshi Haga ,  Hirokazu Ishii

发明人： Yuuji Wada ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugirua ,  Takehide Mizutani ,  Tatsuya Ohsugi ,  Hiroyoshi Haga ,  Hirokazu Ishii

IPC分类号： G03G15/16 ,  G03G21/00

CPC分类号： G03G21/0005 ,  G03G15/1665 ,  G03G15/1675

摘要： An image forming apparatus includes a rotatable image bearer, a toner image forming device, a transfer device, a transfer bias power source, and a cleaner. The toner image forming device is to form a toner image on the image bearer. The transfer device contacts a surface of the image bearer to form a transfer nip between the transfer device and the image bearer. The transfer bias power source is to output a transfer bias to transfer the toner image from the image bearer onto a recording medium in the transfer nip. The cleaner is disposed downstream from the transfer nip in a direction of rotation of the image bearer, to electrostatically attract and remove toner from the surface of the image bearer to a surface of the cleaner. The transfer bias includes an alternating current component.

公开(公告)号：US09766575B2

公开(公告)日：2017-09-19

申请号：US15143806

申请日：2016-05-02

申请人： Tatsuya Ohsugi ,  Kenji Sugiura ,  Hirokazu Ishii ,  Hiroyoshi Haga ,  Yuuji Wada ,  Takehide Mizutani ,  Naoto Kochi ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa

发明人： Tatsuya Ohsugi ,  Kenji Sugiura ,  Hirokazu Ishii ,  Hiroyoshi Haga ,  Yuuji Wada ,  Takehide Mizutani ,  Naoto Kochi ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa

IPC分类号： G03G15/16

CPC分类号： G03G15/1675 ,  G03G15/1605 ,  G03G2215/0129

摘要： An image forming apparatus, including an image bearer configured to bear a toner image; a transfer device disposed opposing to the image bearer; and a transfer bias power source. The transfer bias power source is configured to output a transfer bias to transfer the toner image onto a recording medium. The transfer bias is a superimposed bias that cyclically alternates between a transfer-directional bias to transfer the toner image from the image bearer onto the recording medium and an opposite-directional bias in an opposite direction of the transfer direction. A ratio of a time period of application of the opposite-directional bias to a total time period of one cycle of the output transfer bias is greater than 50%. The transfer bias power source changes a value of a direct current voltage in the superimposed bias according to a linear velocity of the image bearer.

公开(公告)号：US09740156B2

公开(公告)日：2017-08-22

申请号：US15071773

申请日：2016-03-16

申请人： Yuuji Wada ,  Hiroyoshi Haga ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Takehide Mizutani ,  Tatsuya Ohsugi ,  Hirokazu Ishii

发明人： Yuuji Wada ,  Hiroyoshi Haga ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Takehide Mizutani ,  Tatsuya Ohsugi ,  Hirokazu Ishii

IPC分类号： G03G15/16 ,  G03G15/00

CPC分类号： G03G15/6591 ,  G03G15/1605 ,  G03G15/1675 ,  G03G2215/00776

摘要： An image forming apparatus includes a toner image forming unit, a nip formation member, a transfer power source, an information acquisition device, and a controller. The information acquisition device acquires specific information that specifies whether a recording sheet as a transfer target of a toner image is an uneven surface sheet having an uneven surface. The controller outputs a bias including a superimposed voltage, in which an alternating current (AC) voltage is superimposed on a direct current (DC) voltage, as a transfer bias from the transfer power source when the specific information acquired by the information acquisition device is not information corresponding to the uneven surface sheet and to output a bias including only the DC voltage as the transfer bias from the transfer power source when the specific information is the information corresponding to the uneven surface sheet.

公开(公告)号：US09459564B2

公开(公告)日：2016-10-04

申请号：US14881611

申请日：2015-10-13

申请人： Tatsuya Ohsugi ,  Kenji Sugiura ,  Jyunya Sakuraba ,  Hirokazu Ishii ,  Toshitaka Yamaguchi ,  Hiroyoshi Haga ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Yuuji Wada ,  Kazuki Yogosawa ,  Shinya Tanaka ,  Masayoshi Nakayama

发明人： Tatsuya Ohsugi ,  Kenji Sugiura ,  Jyunya Sakuraba ,  Hirokazu Ishii ,  Toshitaka Yamaguchi ,  Hiroyoshi Haga ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Yuuji Wada ,  Kazuki Yogosawa ,  Shinya Tanaka ,  Masayoshi Nakayama

IPC分类号： G03G15/20 ,  G03G15/16

CPC分类号： G03G15/1675 ,  G03G15/1605 ,  G03G15/162 ,  G03G15/1665 ,  G03G15/1685

摘要： An image forming apparatus includes an image bearer, a transfer member, and a power source. The image bearer includes a plurality of layers. The transfer member forms a transfer nip between the image bearer and the transfer member. The power source outputs a transfer bias to transfer a toner image from the image bearer onto a recording sheet in the transfer nip. The transfer bias alternates between a transfer-side bias that causes the toner image to move from the image bearer to the recording sheet, and an opposite-side bias different from the transfer-side bias. A duty ratio of a time period, during which the opposite-side bias is output, relative to one cycle of a waveform, is greater than 50%.

摘要翻译： 图像形成装置包括图像载体，转印构件和电源。 图像载体包括多个层。 转印部件在图像承载体和转印部件之间形成转印辊隙。 电源输出转印偏压以将调色剂图像从图像载体转印到转印辊隙中的记录纸上。 转印偏压在导致调色剂图像从图像载体移动到记录片材的转印侧偏置之间交替，并且与转印侧偏压不同的相反侧偏置交替。 相对于波形的一个周期，输出相对侧偏压的时间段的占空比大于50％。

公开(公告)号：US09423749B2

公开(公告)日：2016-08-23

申请号：US14800083

申请日：2015-07-15

申请人： Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Yuuji Wada ,  Yusuke Mitani

发明人： Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Yuuji Wada ,  Yusuke Mitani

IPC分类号： G03G15/00

CPC分类号： G03G15/5033 ,  G03G15/5037 ,  G03G2221/1654

摘要： An image forming apparatus includes an image bearer, a detector, an image bearer support, and a fulcrum. The image bearer bears an image on a surface thereof. The detector detects a condition of the image bearer. The image bearer support supports the image bearer and includes a stopper to regulate movement of the detector. The fulcrum pivotally supports the image bearer and the detector.

摘要翻译： 图像形成装置包括图像载体，检测器，图像载体支撑件和支点。 图像承载体在其表面上承载图像。 检测器检测图像载体的状况。 图像承载支撑件支撑图像载体，并且包括用于调节检测器运动的限位器。 支点可枢转地支撑图像载体和检测器。

公开(公告)号：US09423724B2

公开(公告)日：2016-08-23

申请号：US14601445

申请日：2015-01-21

申请人： Junichi Ichikawa ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Yuuji Wada ,  Yusuke Mitani

发明人： Junichi Ichikawa ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Yuuji Wada ,  Yusuke Mitani

IPC分类号： G03G15/08 ,  G03G15/16

CPC分类号： G03G15/1605 ,  G03G15/168 ,  G03G15/1685

摘要： A pressing device includes a pressing member, a first lateral plate including a first connecting portion to support a first end of the pressing member, a second lateral plate including a second connecting portion to support a second end of the pressing member opposite to the first end, a first adjuster connected to the first lateral plate at the first connecting portion and to the second lateral plate at the second connecting portion, and a biasing member. The biasing member biases at least one of the first lateral plate, the second lateral plate, and the first adjuster to press the pressing member against the target in a pressing direction. The first adjuster is connected to the first lateral plate and the second lateral plate such that a relative position of the second connecting portion relative to the first connecting portion is changeable in the pressing direction.

摘要翻译： 按压装置包括按压构件，第一侧板，包括用于支撑按压构件的第一端的第一连接部分，第二侧板，包括第二连接部分，用于支撑与第一端相对的按压构件的第二端 在第一连接部分处连接到第一侧板的第一调节器和在第二连接部分处连接到第二侧板的第一调节器和偏置构件。 偏置构件偏压第一侧板，第二侧板和第一调节器中的至少一个，以将按压构件按压在按压方向上的目标。 第一调节器连接到第一侧板和第二侧板，使得第二连接部相对于第一连接部的相对位置能够在按压方向上变化。