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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
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.
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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
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.
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公开(公告)号：US09817341B2
公开(公告)日：2017-11-14
申请号：US15073983
申请日：2016-03-18
申请人： Tatsuya Ohsugi , Kenji Sugiura , Hirokazu Ishii , Hiroyoshi Haga , Naohiro Kumagai , Seiichi Kogure , Takehide Mizutani , Junpei Fujita , Yuuji Wada , Kazuki Yogosawa , Naoto Kochi
发明人： Tatsuya Ohsugi , Kenji Sugiura , Hirokazu Ishii , Hiroyoshi Haga , Naohiro Kumagai , Seiichi Kogure , Takehide Mizutani , Junpei Fujita , Yuuji Wada , Kazuki Yogosawa , Naoto Kochi
CPC分类号： G03G15/1665 , G03G15/1605 , G03G15/1675 , G03G2215/0129 , G03G2215/1623
摘要： 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.
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公开(公告)号：US09690246B2
公开(公告)日：2017-06-27
申请号：US14969216
申请日：2015-12-15
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
CPC分类号： 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
摘要： 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.
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公开(公告)号：US09632461B2
公开(公告)日：2017-04-25
申请号：US14956707
申请日：2015-12-02
申请人： Kenji Sugiura , Toshitaka Yamaguchi , Hiroyoshi Haga , Hirokazu Ishii , Shinya Tanaka , Takehide Mizutani , Yuuji Wada , Tatsuya Ohsugi , Naohiro Kumagai , Seiichi Kogure , Junpei Fujita , Kazuki Yogosawa
发明人： Kenji Sugiura , Toshitaka Yamaguchi , Hiroyoshi Haga , Hirokazu Ishii , Shinya Tanaka , Takehide Mizutani , Yuuji Wada , Tatsuya Ohsugi , Naohiro Kumagai , Seiichi Kogure , Junpei Fujita , Kazuki Yogosawa
CPC分类号： G03G15/1665 , G03G15/1675 , G03G21/20
摘要： 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.
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公开(公告)号：US20160216647A1
公开(公告)日：2016-07-28
申请号：US15003239
申请日：2016-01-21
申请人： Kazuki Yogosawa , Mitsuru Takahashi , Hiroyoshi Haga , Kenji Sugiura , Naohiro Kumagai , Seiichi Kogure , Kenji Sengoku , Takehide Mizutani , Junpei Fujita , Yuuji Wada , Tatsuya Ohsugi
发明人： Kazuki Yogosawa , Mitsuru Takahashi , Hiroyoshi Haga , Kenji Sugiura , Naohiro Kumagai , Seiichi Kogure , Kenji Sengoku , Takehide Mizutani , Junpei Fujita , Yuuji Wada , Tatsuya Ohsugi
CPC分类号： G03G15/161 , B08B1/002 , B08B1/007 , B08B1/02 , B08B1/04 , B08B6/00 , G03G21/0035 , G03G21/0058 , G03G21/0076 , G03G2215/0129 , G03G2221/001
摘要： A cleaning device includes an upstream cleaner, an upstream cleaner, and a collection member. The upstream cleaner is configured to remove toner from a surface of a cleaning target. The downstream cleaner is disposed downstream from the upstream cleaner in a direction of movement of the surface of the cleaning target. The downstream cleaner is configured to remove toner from the surface of the cleaning target. The collection member is configured to collect toner from the downstream cleaner.
摘要翻译： 清洁装置包括上游清洁器，上游清洁器和收集构件。 上游清洁器被配置为从清洁目标的表面去除调色剂。 下游清洁器在清洁对象表面的移动方向上设置在上游清洁器的下游。 下游清洁器构造成从清洁对象的表面去除调色剂。 收集构件构造成从下游清洁器收集调色剂。
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公开(公告)号：US09835987B2
公开(公告)日：2017-12-05
申请号：US15065600
申请日：2016-03-09
申请人： Kenji Sugiura , Hiroyoshi Haga , Hirokazu Ishii , Naohiro Kumagai , Seiichi Kogure , Junpei Fujita , Takehide Mizutani , Yuuji Wada , Naoto Kochi , Tatsuya Ohsugi , Kazuki Yogosawa
发明人： Kenji Sugiura , Hiroyoshi Haga , Hirokazu Ishii , Naohiro Kumagai , Seiichi Kogure , Junpei Fujita , Takehide Mizutani , Yuuji Wada , Naoto Kochi , Tatsuya Ohsugi , Kazuki Yogosawa
CPC分类号： G03G15/162 , G03G15/1605 , G03G15/1675
摘要： An image forming apparatus includes an image bearer; a toner image forming device; an intermediate transferor; a primary transfer power source; a secondary transfer nip forming device; and a secondary transfer power source to output a secondary transfer bias. One of two peak values of the secondary transfer bias is a transfer peak value to provide a greater transfer-directional force to move toner from the intermediate transferor toward the recording medium in the secondary transfer nip. An absolute value of the transfer peak value is greater than an absolute value of the primary transfer bias.
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公开(公告)号：US09696662B2
公开(公告)日：2017-07-04
申请号：US15003239
申请日：2016-01-21
申请人： Kazuki Yogosawa , Mitsuru Takahashi , Hiroyoshi Haga , Kenji Sugiura , Naohiro Kumagai , Seiichi Kogure , Kenji Sengoku , Takehide Mizutani , Junpei Fujita , Yuuji Wada , Tatsuya Ohsugi
发明人： Kazuki Yogosawa , Mitsuru Takahashi , Hiroyoshi Haga , Kenji Sugiura , Naohiro Kumagai , Seiichi Kogure , Kenji Sengoku , Takehide Mizutani , Junpei Fujita , Yuuji Wada , Tatsuya Ohsugi
CPC分类号： G03G15/161 , B08B1/002 , B08B1/007 , B08B1/02 , B08B1/04 , B08B6/00 , G03G21/0035 , G03G21/0058 , G03G21/0076 , G03G2215/0129 , G03G2221/001
摘要： A cleaning device includes an upstream cleaner, an upstream cleaner, and a collection member. The upstream cleaner is configured to remove toner from a surface of a cleaning target. The downstream cleaner is disposed downstream from the upstream cleaner in a direction of movement of the surface of the cleaning target. The downstream cleaner is configured to remove toner from the surface of the cleaning target. The collection member is configured to collect toner from the downstream cleaner.
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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.
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10.发明授权公开(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
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.
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