公开(公告)号：US20050084271A1

公开(公告)日：2005-04-21

申请号：US10921923

申请日：2004-08-20

申请人： Toshio Koike ,  Ken Amemiya ,  Naohiro Kumagai ,  Masato Yanagida ,  Masanori Kawasumi ,  Takeshi Uchitani ,  Yutaka Takahashi ,  Yuji Arai ,  Takaaki Tawada ,  Masami Tomita ,  Takeshi Tabuchi ,  Eisaku Murakami ,  Takeshi Shintani ,  Takuji Yoneda

发明人： Toshio Koike ,  Ken Amemiya ,  Naohiro Kumagai ,  Masato Yanagida ,  Masanori Kawasumi ,  Takeshi Uchitani ,  Yutaka Takahashi ,  Yuji Arai ,  Takaaki Tawada ,  Masami Tomita ,  Takeshi Tabuchi ,  Eisaku Murakami ,  Takeshi Shintani ,  Takuji Yoneda

IPC分类号： G03G9/08 ,  G03G5/00 ,  G03G5/147 ,  G03G9/087 ,  G03G15/00 ,  G03G21/00 ,  G03G21/18

CPC分类号： G03G15/5033 ,  G03G21/0011 ,  G03G21/0094 ,  G03G2221/0089 ,  G03G2221/1606

摘要： An image forming apparatus includes an image carrier, a charging unit that charges the image carrier, a latent image forming unit that forms a latent image on the image carrier, a developing unit that develops the latent image to form a toner image, a transferring unit that transfers the toner image to a recording medium, a cleaning unit that cleans toner remaining on the image carrier, a lubricant applying unit that applies a solid lubricant to a surface of the image carrier, and a detecting unit that detects whether the image carrier is brand new. The toner has an average roundness of 0.94 or more. The lubricant applying unit is operated when the detecting unit detects that the image carrier is brand new.

摘要翻译： 图像形成装置包括图像载体，对图像载体进行充电的充电单元，在图像载体上形成潜像的潜像形成单元，使潜像显影以形成调色剂图像的显影单元，转印单元 该调色剂图像将调色剂图像转印到记录介质上，清洁单元，其清洁残留在图像载体上的调色剂;润滑剂施加单元，其向所述图像载体的表面施加固体润滑剂;检测单元，其检测所述图像载体是否为 全新的。 调色剂的平均圆度为0.94以上。 当检测单元检测到图像载体是全新的时，润滑剂施加单元被操作。

公开(公告)号：US20050036805A1

公开(公告)日：2005-02-17

申请号：US10874269

申请日：2004-06-24

申请人： Eisaku Murakami ,  Toshio Koike ,  Masato Yanagida ,  Naohiro Kumagai ,  Takeshi Shintani ,  Masanori Kawasumi ,  Atsushi Sampe ,  Masami Tomita ,  Hiroyuki Nagashima ,  Takeshi Uchitani

发明人： Eisaku Murakami ,  Toshio Koike ,  Masato Yanagida ,  Naohiro Kumagai ,  Takeshi Shintani ,  Masanori Kawasumi ,  Atsushi Sampe ,  Masami Tomita ,  Hiroyuki Nagashima ,  Takeshi Uchitani

IPC分类号： G03G9/08 ,  G03G15/08 ,  G03G15/16 ,  G03G21/00 ,  G03G15/24

CPC分类号： G03G21/0064 ,  G03G2221/0005

摘要： An image forming apparatus includes an image bearing member configured to form an electrostatic latent image on a surface thereof, and a separating mechanism configured to separate an irregular charge toner from a residual toner remaining on the surface of the image bearing member after a completion of an image forming process, to provide an extra travel passage to give a time delay to the irregular charge toner, and to return the irregular charge toner with the time delay to the surface of the image bearing member.

摘要翻译： 图像形成装置包括构造成在其表面上形成静电潜像的图像承载部件，以及分离机构，其被配置为将不规则电荷调色剂与残留在图像承载部件的表面上的残留调色剂分离， 图像形成处理，以提供额外的行进通道以对不规则的充电调色剂给予时间延迟，并且使具有时间延迟的不规则充电调色剂返回到图像承载部件的表面。

公开(公告)号：US11112734B2

公开(公告)日：2021-09-07

申请号：US16820731

申请日：2020-03-17

申请人： Naohiro Kumagai ,  Masanari Fujita ,  Katsuya Kawagoe ,  Masaharu Furuya ,  Hiroki Nakamatsu ,  Yoshiki Hozumi

发明人： Naohiro Kumagai ,  Masanari Fujita ,  Katsuya Kawagoe ,  Masaharu Furuya ,  Hiroki Nakamatsu ,  Yoshiki Hozumi

IPC分类号： G03G15/16

摘要： A belt device includes a belt wound around a plurality of rollers, one of the plurality of rollers, and a belt contact member disposed on the one of the plurality of rollers. The belt rotates along with the plurality of rollers. The belt contact member faces an edge of the belt in an axial direction of the one of the plurality of rollers and includes a flat portion and a separation portion. The flat portion forms a plane perpendicular to the axial direction of the one of the plurality of rollers. The separation portion is disposed outboard of the flat portion in a radial direction of the one of the plurality of rollers and has a surface located farther from the edge of the belt than the flat portion in the axial direction of the one of the plurality of rollers.

公开(公告)号：US10955771B2

公开(公告)日：2021-03-23

申请号：US16816266

申请日：2020-03-12

申请人： Naohiro Kumagai ,  Masanari Fujita ,  Katsuya Kawagoe ,  Masaharu Furuya ,  Hiroki Nakamatsu ,  Yoshiki Hozumi

发明人： Naohiro Kumagai ,  Masanari Fujita ,  Katsuya Kawagoe ,  Masaharu Furuya ,  Hiroki Nakamatsu ,  Yoshiki Hozumi

IPC分类号： G03G15/00 ,  G03G15/16

摘要： A belt control device includes a plurality of rollers, a belt wound around the plurality of rollers and configured to rotate along with the plurality of rollers, a belt contact member that the belt contacts when the belt moves in an axial direction of the plurality of rollers, and a shaft displacement member movable in the axial direction and including an inclined face inclined with respect to a surface of the belt to control movement of the belt in the axial direction. The belt, the belt contact member, and the shaft displacement member are configured to make a frictional force between an edge of the belt and the belt contact member greater than a frictional force between the belt contact member and the shaft displacement member.

公开(公告)号：US10228639B2

公开(公告)日：2019-03-12

申请号：US15592006

申请日：2017-05-10

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

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

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

摘要： An image forming apparatus includes a belt-shaped image bearer, a transferer, a guide, two rotators, and a support. The 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 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 two rotators are disposed upstream from the transfer section in a moving direction of the image bearer and in contact with a non-image bearing surface of the image bearer opposite to the image bearing surface, a first rotator being closer to the transfer section than a second rotator. The support supports the first rotator and the guide and adjusts a position of the first rotator and a position of the guide.

公开(公告)号：US09720364B2

公开(公告)日：2017-08-01

申请号：US14966398

申请日：2015-12-11

申请人： Seiichi Kogure ,  Naohiro Kumagai ,  Junpei Fujita ,  Kazuki Yogosawa ,  Tatsuya Ohsugi ,  Kenji Sugiura ,  Yuuji Wada ,  Takehide Mizutani ,  Ryo Hasegawa

发明人： Seiichi Kogure ,  Naohiro Kumagai ,  Junpei Fujita ,  Kazuki Yogosawa ,  Tatsuya Ohsugi ,  Kenji Sugiura ,  Yuuji Wada ,  Takehide Mizutani ,  Ryo Hasegawa

IPC分类号： G03G15/00 ,  G03G15/16

CPC分类号： G03G15/6529 ,  G03G15/1605 ,  G03G15/6558 ,  G03G2215/0129

摘要： 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.

公开(公告)号：US09720355B2

公开(公告)日：2017-08-01

申请号：US15265562

申请日：2016-09-14

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%.

公开(公告)号：US09645530B2

公开(公告)日：2017-05-09

申请号：US15142424

申请日：2016-04-29

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

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

IPC分类号： G03G15/16

CPC分类号： G03G15/163 ,  G03G15/1605 ,  G03G15/1675 ,  G03G2215/0129

摘要： An image forming apparatus includes an image bearer, a transfer device contacting the image bearer to form a transfer portion, a transfer bias power source, and a controller. A ratio of a time period of application of the opposite-directional bias to a total time period of one cycle of the AC component of the superimposed bias is greater than 50%. A ratio of a value of the DC component of the superimposed bias output within a region ranging from a leading end of the recording medium to a predetermined length to a value of the DC component of the superimposed bias output outside the region is greater than a ratio of a value of the AC component of the superimposed bias output within the region to a value of the AC component of the superimposed bias output outside the region.

公开(公告)号：US20160306317A1

公开(公告)日：2016-10-20

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： G03G21/00 ,  G03G15/16

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

摘要： An image forming apparatus comprises 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.

摘要翻译： 图像形成装置包括可旋转图像载体，调色剂图像形成装置，转印装置，转印偏压电源和清洁器。 调色剂图像形成装置将在图像载体上形成调色剂图像。 传送装置接触图像载体的表面以在传送装置和图像载体之间形成传送夹持部。 转印偏压电源是输出转印偏压，以将调色剂图像从图像载体转印到转印辊隙中的记录介质上。 清洁器沿图像承载体的旋转方向设置在转印辊隙的下游，以将静电吸引和从图像载体的表面去除调色剂到清洁器的表面。 转印偏压包括交流分量。

公开(公告)号：US09176457B2

公开(公告)日：2015-11-03

申请号：US13920571

申请日：2013-06-18

申请人： Kaoru Yoshino ,  Satoshi Hatori ,  Naohiro Kumagai ,  Akira Fujimori ,  Hideyasu Seki ,  Ryohta Gotoh

发明人： Kaoru Yoshino ,  Satoshi Hatori ,  Naohiro Kumagai ,  Akira Fujimori ,  Hideyasu Seki ,  Ryohta Gotoh

IPC分类号： G03G21/00 ,  G03G21/10

CPC分类号： G03G21/105

摘要： An image forming apparatus includes a waste toner conveying device including a primary conveyor to convey waste toner discharged from a plurality of primary cleaners and a secondary conveyor to convey waste toner discharged from a secondary cleaner. A relay conveyor conveys the waste toner discharged from the primary conveyor and the secondary conveyor. A waste toner container receives the waste toner discharged from the relay conveyor. The primary conveyor, the secondary conveyor, and the relay conveyor are disposed at one end of the image forming apparatus in a front-to-rear direction thereof. A secondary conveyor outlet of the secondary conveyor is disposed below a primary conveyor outlet of the primary conveyor and above an inlet of the waste toner container.

摘要翻译： 图像形成装置包括废调色剂输送装置，其包括用于输送从多个初级清洁器排出的废调色剂的主输送机和二次输送机，以输送从次级清洁器排出的废调色剂。 继电器输送机输送从一次输送机和二次输送机排出的废调色剂。 废粉盒容纳从继电器输送机排出的废调色剂。 主输送机，二次输送机和继电器输送机沿着图像形成装置的前后方向设置在一端。 二次输送机的二次输送机出口设置在主输送机的主输送机出口下方，并且位于废调色剂容器的入口的上方。