公开(公告)号：US10152001B2

公开(公告)日：2018-12-11

申请号：US15690484

申请日：2017-08-30

Applicant: Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Yuuji Wada

Inventor： Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa ,  Kenji Sugiura ,  Yuuji Wada

IPC: G03G15/16

Abstract: 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：US09817341B2

公开(公告)日：2017-11-14

申请号：US15073983

申请日：2016-03-18

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

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

IPC: G03G15/20 ,  G03G15/16

CPC classification number: G03G15/1665 ,  G03G15/1605 ,  G03G15/1675 ,  G03G2215/0129 ,  G03G2215/1623

Abstract: An image forming apparatus includes a plurality of image bearers, a transfer bias member, and a power source. When the transfer bias member transfers a color toner image onto a recording sheet, a second peak value of a peak-to-peak of a transfer bias, which is smaller than a first peak value of the peak-to-peak in an electrostatic force to move toner from the image bearers or an intermediate transfer body to the recording sheet, is zero or has a first polarity to generate the electrostatic force in a transfer direction to move toner from the image bearers or the intermediate transfer body to the recording sheet. When the transfer bias member transfers a monochromatic toner image including only black toner onto the recording sheet, the second peak value is zero or has a second polarity to generate an electrostatic force in an opposite direction to the transfer direction.

公开(公告)号：US20170235258A1

公开(公告)日：2017-08-17

申请号：US15427735

申请日：2017-02-08

Applicant: 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

Inventor： 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: G03G15/16

CPC classification number: G03G15/1675 ,  G03G15/1605 ,  G03G15/5029 ,  G03G2215/00738

Abstract: 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：US09690246B2

公开(公告)日：2017-06-27

申请号：US14969216

申请日：2015-12-15

Applicant: Seiichi Kogure ,  Naohiro Kumagai ,  Junpei Fujita ,  Kazuki Yogosawa ,  Tatsuya Ohsugi ,  Kenji Sugiura ,  Yuuji Wada ,  Takehide Mizutani

Inventor： Seiichi Kogure ,  Naohiro Kumagai ,  Junpei Fujita ,  Kazuki Yogosawa ,  Tatsuya Ohsugi ,  Kenji Sugiura ,  Yuuji Wada ,  Takehide Mizutani

IPC: G03G15/16 ,  G03G15/00 ,  G03G21/16

CPC classification number: G03G15/161 ,  G03G15/16 ,  G03G15/1605 ,  G03G15/1615 ,  G03G15/1665 ,  G03G15/1675 ,  G03G15/168 ,  G03G15/1695 ,  G03G15/6529 ,  G03G15/6555 ,  G03G15/6558 ,  G03G21/1647 ,  G03G2215/00409 ,  G03G2215/0129 ,  G03G2221/1642

Abstract: An image forming apparatus includes a belt-shaped image bearer, a transferer, a guide unit, and a plurality of contact members. The belt-shaped image bearer has an image bearing surface to bear an image thereon. The transferer forms a transfer section between the transferer and the image bearer, to transfer the image onto a recording medium. The guide unit is disposed upstream from the transfer section in a delivery direction of the recording medium, to guide the recording medium toward the transfer section. The plurality of contact members are disposed side by side at positions opposing the guide unit and in contact with a non image bearing surface of the image bearer opposite to the image bearing surface.

公开(公告)号：US09632461B2

公开(公告)日：2017-04-25

申请号：US14956707

申请日：2015-12-02

Applicant: Kenji Sugiura ,  Toshitaka Yamaguchi ,  Hiroyoshi Haga ,  Hirokazu Ishii ,  Shinya Tanaka ,  Takehide Mizutani ,  Yuuji Wada ,  Tatsuya Ohsugi ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa

Inventor： Kenji Sugiura ,  Toshitaka Yamaguchi ,  Hiroyoshi Haga ,  Hirokazu Ishii ,  Shinya Tanaka ,  Takehide Mizutani ,  Yuuji Wada ,  Tatsuya Ohsugi ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Kazuki Yogosawa

IPC: G03G15/16 ,  G03G21/20

CPC classification number: G03G15/1665 ,  G03G15/1675 ,  G03G21/20

Abstract: An image forming apparatus includes an image bearer, a toner image forming device, a nip forming device, a power source, a controller, and a temperature-and-humidity detector. The toner image forming device forms a toner image on the image bearer. The nip forming device contacts the image bearer to form a transfer nip. The power source outputs a transfer bias, in which an alternating current component is superimposed on a direct current component, to transfer the toner image onto a recording medium interposed in the transfer nip. The temperature-and-humidity detector detects a temperature and humidity. The controller controls the power source to output the transfer bias including the direct current component with a smaller absolute value as at least one of the detected temperature and humidity increases.

公开(公告)号：US20160216682A1

公开(公告)日：2016-07-28

申请号：US15003938

申请日：2016-01-22

Applicant: Kenji SENGOKU ,  Kazuki YOGOSAWA ,  Mitsuru TAKAHASHI ,  Seiichi KOGURE ,  Kenji SUGIURA ,  Hiroyoshi HAGA ,  Junpei FUJITA ,  Takehide MIZUTANI ,  Tatsuya OHSUGI ,  Yuuji WADA

Inventor： Kenji SENGOKU ,  Kazuki YOGOSAWA ,  Mitsuru TAKAHASHI ,  Seiichi KOGURE ,  Kenji SUGIURA ,  Hiroyoshi HAGA ,  Junpei FUJITA ,  Takehide MIZUTANI ,  Tatsuya OHSUGI ,  Yuuji WADA

IPC: G03G15/16 ,  G03G21/00

CPC classification number: G03G21/00 ,  G03G15/161 ,  G03G21/0035 ,  G03G21/0058 ,  G03G21/0076 ,  G03G2215/0129 ,  G03G2221/001

Abstract: A cleaning device includes a cleaner, a casing, and an exit seal. The cleaner is configured to remove toner from a cleaning target. The casing accommodates the cleaner. The exit seal is attached to the casing and has a free end contacting the cleaning target at a position downward from the cleaner in a direction of movement of the cleaning target and an attached end attached to the casing. A space is disposed between a surface of the cleaning target and an opposite face of the exit seal opposite the cleaning target. The space includes an opening at a lateral end of the exit seal. The exit seal contacts the cleaning target from a trailing direction of the exit seal and seals the opening at at least an attached end side of the exit seal.

Abstract translation: 清洁装置包括清洁器，壳体和出口密封件。 清洁器配置为从清洁目标中去除碳粉。 外壳容纳清洁剂。 出口密封件附接到壳体，并且在清洁对象的移动方向和附接到壳体的附接端部上，在从清洁器向下方的位置处接触清洁对象的自由端。 在清洁对象的表面和与清洁对象物相对的出口密封件的相对面之间设置有空间。 该空间包括在出口密封件的侧端处的开口。 出口密封件从出口密封件的拖尾方向接触清洁目标，并且在出口密封件的至少一个附接端侧密封开口。

公开(公告)号：US09383691B2

公开(公告)日：2016-07-05

申请号：US14742730

申请日：2015-06-18

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

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

IPC: G03G15/16

CPC classification number: G03G15/1695 ,  G03G15/161 ,  G03G15/1675 ,  G03G15/168

Abstract: An image forming apparatus includes a transfer device to transfer a toner image onto a recording medium with a transfer bias applied thereto, a recording medium conveyor to deliver the recording medium to a transfer region while controlling an alignment of the recording medium having entered the transfer region in alignment control, and a transfer bias controller to obtain a toner adhesion amount information on a post-alignment-control toner image that passes through the transfer region after the recording medium is free from the alignment control, and to reduce, when the toner adhesion amount per unit area is less than a predetermined amount, the transfer bias after the alignment control is released to a level less than that of a transfer bias that is applied when the toner image having a same toner adhesion amount passes through the transfer region before the recording medium is free from the alignment control.

Abstract translation: 图像形成装置包括：转印装置，用于将调色剂图像转印到具有转印偏压的记录介质上;记录介质传送器，用于将记录介质输送到转印区域，同时控制进入转印区域的记录介质的排列 以及转印偏压控制器，以便在记录介质不受对准控制之后获得通过转印区域的调色剂调色剂图像上的调色剂附着量信息，并且当调色剂附着 每单位面积的量小于预定量，则在对准控制之后的转印偏压被释放到低于在具有相同调色剂附着量的调色剂图像通过转印区域之前施加的转印偏压的水平 记录介质没有对准控制。

公开(公告)号：US20160170363A1

公开(公告)日：2016-06-16

申请号：US14966398

申请日：2015-12-11

Applicant: Seiichi KOGURE ,  Naohiro KUMAGAI ,  Junpei FUJITA ,  Kazuki YOGOSAWA ,  Tatsuya OHSUGI ,  Kenji SUGIURA ,  Yuuji WADA ,  Takehide MIZUTANI ,  Ryo HASEGAWA

Inventor： Seiichi KOGURE ,  Naohiro KUMAGAI ,  Junpei FUJITA ,  Kazuki YOGOSAWA ,  Tatsuya OHSUGI ,  Kenji SUGIURA ,  Yuuji WADA ,  Takehide MIZUTANI ,  Ryo HASEGAWA

IPC: G03G15/16

CPC classification number: G03G15/6529 ,  G03G15/1605 ,  G03G15/6558 ,  G03G2215/0129

Abstract: An image forming apparatus includes an image bearer having an image bearing face to bear an image thereon; a transferer disposed opposing the image bearer, to transfer the image from the image bearing face onto a recording medium at a transfer section between the transferer and the image bearer; a first guide disposed upstream from the transfer section in a direction of delivery of the recording medium, to guide the recording medium to the transfer section; and a second guide upstream from the first guide and spaced away from the first guide, to guide the recording medium to the transfer section. Each of the first guide and the second guide extends in a lateral direction perpendicular to the direction of delivery. A leading end of the second guide in the direction of delivery is inclined from one end to the other end of the second guide in the lateral direction.

Abstract translation: 图像形成装置包括具有承载图像的图像承载面的图像载体; 与所述图像载体相对设置的传送器，用于将所述图像从所述图像承载面转移到所述传送器和所述图像载体之间的传送部分处的记录介质上; 第一引导件，沿着所述记录介质的传送方向设置在所述传送部分的上游，以将所述记录介质引导到所述传送部分; 以及从第一引导件上游并与第一引导件间隔开的第二引导件，以将记录介质引导到传送部分。 第一引导件和第二引导件中的每一个沿垂直于输送方向的横向方向延伸。 第二引导件在输送方向上的前端沿横向从第二引导件的一端向另一端倾斜。

公开(公告)号：US20160124374A1

公开(公告)日：2016-05-05

申请号：US14994873

申请日：2016-01-13

Applicant: Kazuki YOGOSAWA ,  Kenji SUGIURA ,  Naohiro KUMAGAI ,  Seiichi KOGURE ,  Junpei FUJITA ,  Yuuji WADA ,  Yusuke MITANI

Inventor： Kazuki YOGOSAWA ,  Kenji SUGIURA ,  Naohiro KUMAGAI ,  Seiichi KOGURE ,  Junpei FUJITA ,  Yuuji WADA ,  Yusuke MITANI

IPC: G03G21/00

CPC classification number: G03G21/169 ,  B41F23/002 ,  G03G15/161 ,  G03G2215/1661 ,  G03G2221/1618

Abstract: A cleaning device includes a cleaner, a plurality of cleaning sub-units, a sub-unit holder, a detachable transmission assembly, and a plurality of joint couplers. The cleaner scrapes off adhered material from a surface of a cleaning target while contacting the surface of the cleaning target. The cleaning sub-units each includes a holder to hold the cleaner and a drive-receive rotator to receive a driving force. The sub-unit holder holds the cleaning sub-units. The detachable transmission assembly includes a driving-force receive rotator to receive a driving force from an external unit and a plurality of drive transmission rotators to transmit the driving force received by the driving-force receive rotator to the drive-receive rotators of the cleaning sub-units. The joint couplers mounted on the drive-receive rotators and the drive transmission rotators couple the drive-receive rotators with the drive transmission rotators in a rotation axial direction.

公开(公告)号：US09256167B2

公开(公告)日：2016-02-09

申请号：US14449270

申请日：2014-08-01

Applicant: Atsushi Nagata ,  Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Yuuji Wada ,  Yusuke Mitani ,  Kazuki Yogosawa

Inventor： Atsushi Nagata ,  Kenji Sugiura ,  Naohiro Kumagai ,  Seiichi Kogure ,  Junpei Fujita ,  Yuuji Wada ,  Yusuke Mitani ,  Kazuki Yogosawa

IPC: G03G15/16

CPC classification number: G03G15/1665 ,  G03G15/5058

Abstract: An image forming apparatus includes an image bearer; a toner image forming unit, a transfer unit, a detector, and a controller. The toner image forming unit forms a plurality of types of density detection patterns on the surface of the image bearer in mutually-different positions in a surface-movement direction of the image bearer. The density detection patterns have mutually-different lengths in a direction orthogonal to the surface-movement direction of the image bearer. The transfer unit transfers the density detection patterns onto the surface of the transfer member. The detector detects image densities of the density detection patterns transferred on the surface of the transfer member. The controller calculates an image density difference between the density detection patterns on a basis of a detection result obtained by the detector, and corrects a transfer bias for transferring a toner image on a basis of a value of the image density difference.

Abstract translation: 图像形成装置包括图像载体; 调色剂图像形成单元，转印单元，检测器和控制器。 调色剂图像形成单元在图像承载体的表面移动方向上的相互不同的位置的图像载体的表面上形成多种类型的浓度检测图案。 密度检测图案在与图像载体的表面移动方向正交的方向上具有相互不同的长度。 转印单元将浓度检测图案转印到转印部件的表面上。 检测器检测在转印部件的表面上转印的浓度检测图案的图像浓度。 控制器基于由检测器获得的检测结果来计算浓度检测图案之间的图像浓度差，并且基于图像浓度差的值来校正用于转印调色剂图像的转印偏压。