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公开(公告)号：US20200073298A1
公开(公告)日：2020-03-05
申请号：US16537772
申请日：2019-08-12
发明人： Hiroshi Kokubo
摘要： An image forming apparatus includes a transfer portion configured to transfer a toner image to a sheet, a fixing portion configured to fix the toner image, a reverse conveyance portion configured to perform a reverse conveyance operation in which the sheet is conveyed to a first direction and thereafter conveyed to a second direction that is opposite to the first direction, a reverse guide configured to guide the sheet in reverse conveyance operation, a conveyance guide pair configured to form a conveyance path through which the sheet subjected to the reverse conveyance operation passes, and to guide the sheet toward the transfer portion, an air blowing portion configured to blow air toward the conveyance path, and a ventilation portion through which air blowing from the air blowing portion toward the reverse guide passes, the air having passed through the ventilation portion flowing along the reverse guide.
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公开(公告)号：US20170017189A1
公开(公告)日：2017-01-19
申请号：US15208272
申请日：2016-07-12
发明人： Hiroshi Kokubo
IPC分类号： G03G15/00
CPC分类号： G03G15/6576 , G03G15/235 , G03G2215/00586 , G03G2215/00662 , G03G2215/00704 , G03G2215/0129
摘要： The curl correction device includes a first guide that guides a sheet to a nip portion between a first rotation member and a second rotation member, a support portion that rotatably supports the first guide about a fulcrum on the downstream side of the first guide, and a restriction portion that restricts a rotation of the first guide rotating about the fulcrum by being in contact with the first guide. The first guide is rotatable about the fulcrum so as to become separated from the restriction portion.
摘要翻译： 卷曲校正装置包括将片材引导到第一旋转构件和第二旋转构件之间的夹持部的第一引导件，可旋转地支撑第一引导件围绕第一引导件的下游侧的支点的支撑部，以及 限制部分，其限制通过与第一引导件接触而围绕支点旋转的第一引导件的旋转。 第一引导件可绕支点转动，从而与限制部分分离。
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公开(公告)号：US10954088B2
公开(公告)日：2021-03-23
申请号：US15954817
申请日：2018-04-17
发明人： Takanori Sakurai , Hiroshi Kokubo
摘要： Disclosed is a sheet conveying apparatus, including: a conveying member conveying a sheet; and a first and second changing portions s configured to change a conveying direction of the sheet conveyed by the conveying member by curving the sheet, wherein the conveying direction of the sheet being conveyed by the conveying member is changed by the first changing portion so that the sheet is conveyed toward the second changing portion. The relationship θa>θb is satisfied where θa indicates an angle in which a conveying direction of the sheet is changed by the first changing portion and θb indicates an angle in which a conveying direction of the sheet is changed by the second changing portion.
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公开(公告)号：US11548757B2
公开(公告)日：2023-01-10
申请号：US16921978
申请日：2020-07-07
摘要： An image forming apparatus includes an image forming portion, a reversing portion configured to reverse the sheet received through a first feeding passage by feeding the sheet in a first direction and then in a second direction opposite to the first direction, a sheet feeding portion provided in a second feeding passage branching from the first feeding passage on a side upstream of the reversing portion with respect to the first direction, a first guiding surface forming the second feeding passage for guiding a first surface of the sheet fed by the feeding portion, and a second guiding surface for guiding a second surface, opposite from the first surface, of the sheet fed from the reversing portion in the second direction. The second guiding surface is movable with movement of the first guiding surface for opening the second feeding passage.
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公开(公告)号：US10577205B2
公开(公告)日：2020-03-03
申请号：US15954988
申请日：2018-04-17
发明人： Hiroshi Kokubo
摘要： Disclosed is a sheet conveying apparatus, including: a conveying member configured to convey a sheet; a plurality of changing portions successively provided downstream of the conveying member in a conveying direction of the sheet, the plurality of changing portions being configured to change the conveying direction of the sheet conveyed by the conveying member by curving the sheet; and a control portion configured to control a conveying speed of the sheet. The control portion controls a conveying speed of the sheet such that V1
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公开(公告)号：US10073404B2
公开(公告)日：2018-09-11
申请号：US15208272
申请日：2016-07-12
发明人： Hiroshi Kokubo
CPC分类号： G03G15/6576 , G03G15/235 , G03G2215/00586 , G03G2215/00662 , G03G2215/00704 , G03G2215/0129
摘要： The curl correction device includes a first guide that guides a sheet to a nip portion between a first rotation member and a second rotation member, a support portion that rotatably supports the first guide about a fulcrum on the downstream side of the first guide, and a restriction portion that restricts a rotation of the first guide rotating about the fulcrum by being in contact with the first guide. The first guide is rotatable about the fulcrum so as to become separated from the restriction portion.
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公开(公告)号：US10142513B2
公开(公告)日：2018-11-27
申请号：US15334677
申请日：2016-10-26
发明人： Kenichi Hirota , Hiroshi Kokubo
摘要： An image forming apparatus forms a measurement image on a sheet, moves a carriage to read the measurement image, reads from a storage unit an adjustment condition, generates a correction condition based on the adjustment condition and a result of reading the measurement image, moves the carriage to read an original, generates image data of the original, corrects a position at which an image is formed on a sheet based on the correction condition and forms an image of the original on a sheet based on the corrected image data.
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公开(公告)号：US20180305153A1
公开(公告)日：2018-10-25
申请号：US15954988
申请日：2018-04-17
发明人： Hiroshi Kokubo
摘要： Disclosed is a sheet conveying apparatus, including: a conveying member configured to convey a sheet; a plurality of changing portions successively provided downstream of the conveying member in a conveying direction of the sheet, the plurality of changing portions being configured to change the conveying direction of the sheet conveyed by the conveying member by curving the sheet; and a control portion configured to control a conveying speed of the sheet. The control portion controls a conveying speed of the sheet such that V1
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公开(公告)号：US09658577B2
公开(公告)日：2017-05-23
申请号：US14676035
申请日：2015-04-01
IPC分类号： G03G15/16
CPC分类号： G03G15/1605 , G03G15/167 , G03G2215/1623
摘要： An image forming apparatus includes: an image bearing member; a toner image forming unit; an endless transfer belt; a transfer roller urged from an inner peripheral surface of the transfer belt toward the image bearing member via the transfer belt; a feeding surface forming roller, provided downstream of the transfer roller with respect to a traveling direction of the transfer belt, having such a shape that a diameter at each of end portions is smaller than a diameter at a central portion with respect to a rotational axis direction; and a stretching roller, downstream of the feeding surface forming roller with respect to the traveling direction of the transfer belt, having such a shape that a diameter at each of end portions is larger than a diameter at a central portion with respect to the rotational axis direction.
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公开(公告)号：US20170142286A1
公开(公告)日：2017-05-18
申请号：US15334677
申请日：2016-10-26
发明人： Kenichi Hirota , Hiroshi Kokubo
CPC分类号： H04N1/3873 , H04N1/00795 , H04N1/3878 , H04N1/506
摘要： An image forming apparatus forms a measurement image on a sheet, moves a carriage to read the measurement image, reads from a storage unit an adjustment condition, generates a correction condition based on the adjustment condition and a result of reading the measurement image, moves the carriage to read an original, generates image data of the original, corrects a position at which an image is formed on a sheet based on the correction condition and forms an image of the original on a sheet based on the corrected image data.
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