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公开(公告)号：US20230408948A1
公开(公告)日：2023-12-21
申请号：US18331678
申请日：2023-06-08
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yasuhiro MICHISHITA , Keisuke OBA , Koji UNO
CPC classification number: G03G15/0233 , G03G15/04 , G03G21/06 , G03G15/1605 , G03G15/167 , G03G2221/0047
Abstract: An image forming apparatus includes a plurality of image forming portions, an intermediate transfer belt, a primary transfer member, a secondary transfer roller, a counter roller, and a charge eliminating device. The counter roller is pressed against the secondary transfer roller via an intermediate transfer belt to thereby form a secondary transfer nip portion. The charge eliminating device includes a charge eliminating needle that is disposed with an end part thereof pointing to a downstream side in a conveyance direction of the recording medium, and that is grounded, and a charge eliminating needle protection cover that has a guide surface that is opposed to the recording medium having passed through the secondary transfer nip portion, and that maintains a constant interval between the recording medium and the charge eliminating needle, and eliminates residual charge on the recording medium having passed through the secondary transfer nip portion.
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公开(公告)号：US20230418191A1
公开(公告)日：2023-12-28
申请号：US18338010
申请日：2023-06-20
Applicant: KYOCERA Document Solutions Inc.
Inventor： Koji UNO , Keisuke OBA , Yasuhiro MICHISHITA
CPC classification number: G03G15/1675 , G03G15/80 , G03G15/5054 , G03G15/1685 , G03G2215/1614 , G03G2215/1623
Abstract: An image forming apparatus includes an image carrying member, an intermediate transfer belt, a primary transfer roller, a first belt support roller, a secondary transfer roller, a second belt support roller, a current output portion, a current sensing portion, and a control portion. The current output portion passes across the secondary transfer roller a secondary transfer current as part of an output current. The current output portion and the second belt support roller are electrically connected together. The current sensing portion senses a leakage current passing from the first belt support roller via the intermediate transfer belt to the second belt support roller. The control portion sets the output current such that the secondary transfer current has a value given by subtracting a leakage current from the output current and keeps the voltage on the second belt support roller between −50 V and 50 V, inclusive.
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公开(公告)号：US20240385553A1
公开(公告)日：2024-11-21
申请号：US18661185
申请日：2024-05-10
Applicant: KYOCERA Document Solutions Inc.
Inventor： Koji UNO , Keisuke OBA , Yasuhiro MICHISHITA
Abstract: An image forming apparatus includes a plurality of image carriers, a charging device, an exposure device, a development device, and an intermediate transfer belt. The image carrier has a surface on which an amorphous silicon photosensitive layer is formed. The intermediate transfer belt is a plastic belt having a surface resistivity of 9.5 to 10.5 (log Ω/square). An offset amount of the primary transfer roller from the image carrier is 0 to 2 (mm), a contact surface pressure between the image carrier and the intermediate transfer belt is 0.5 to 1.5 (gf/mm2), and a charge density of primary transfer current that flows when the primary transfer voltage is applied to the primary transfer roller is 0.016 to 0.040 (μC/cm2).
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Patent Agency Ranking
公开(公告)号：US20170227894A1
公开(公告)日：2017-08-10
申请号：US15420718
申请日：2017-01-31
Applicant: KYOCERA Document Solutions Inc.
Inventor： Keisuke OBA , Satoshi UEMURA , Kenji MIYAMOTO
IPC: G03G15/16
CPC classification number: G03G15/1615 , G03G15/161 , G03G2215/0132 , G03G2215/0193
Abstract: An image forming apparatus of the present disclosure includes a plurality of image forming portions, an intermediate transfer unit, a secondary transfer member, a belt cleaning device, and a control portion. The intermediate transfer unit includes an intermediate transfer belt, a plurality of primary transfer members, a drive roller, a tension roller, and a contacting/separating mechanism. The belt cleaning device includes a cleaning member which faces the tension roller with the intermediate transfer belt therebetween. In a withdrawal mode, the cleaning member is moved by pressing force of the tension roller further into a housing from an opening portion as compared with in a printing mode. The control portion is capable of executing, while image formation is not being performed, a transfer toner collection mode in which the intermediate transfer belt and the belt cleaning device are driven in the withdrawal mode.
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公开(公告)号：US20240142899A1
公开(公告)日：2024-05-02
申请号：US18490578
申请日：2023-10-19
Applicant: KYOCERA Document Solutions Inc.
Inventor： Keisuke OBA , Koji UNO , Yasuhiro MICHISHITA
CPC classification number: G03G15/1615 , G03G15/18 , G03G2215/0016
Abstract: The intermediate transfer unit includes: an endless intermediate transfer belt which is turned around while carrying a toner image on its outer circumferential surface; and a plurality of rollers on which the intermediate transfer belt is turnably stretched, wherein the intermediate transfer belt has, on its inner circumferential surface, an information recording area in which belt information has been recorded, and the intermediate transfer belt has a mark at a position in the outer circumferential surface where a positional relationship between the mark and the information recording area comes to a specified relationship.
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公开(公告)号：US20230408947A1
公开(公告)日：2023-12-21
申请号：US18331662
申请日：2023-06-08
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yasuhiro MICHISHITA , Keisuke OBA , Koji UNO
IPC: G03G15/01 , G03G15/045 , G03G15/16
CPC classification number: G03G15/0121 , G03G15/011 , G03G15/045 , G03G15/1605 , G03G15/1665 , G03G15/165
Abstract: An image forming apparatus includes a plurality of image forming portions, an intermediate transfer belt, a primary transfer member, a secondary transfer roller, a counter roller, and a charge eliminating device. The counter roller is pressed against the secondary transfer roller via an intermediate transfer belt to thereby form a secondary transfer nip portion. The charge eliminating device includes a charge eliminating needle that is disposed with an end part thereof pointing to a downstream side in a conveyance direction of the recording medium, and that is grounded, and a charge eliminating needle protection cover that has a guide surface that is opposed to the recording medium having passed through the secondary transfer nip portion. The guide surface is formed of a conductive material having a resistance value of 106Ω or lower, and is in a floating state.
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公开(公告)号：US20230418205A1
公开(公告)日：2023-12-28
申请号：US18336835
申请日：2023-06-16
Applicant: KYOCERA Document Solutions Inc.
Inventor： Koji UNO , Keisuke OBA , Yasuhiro MICHISHITA
CPC classification number: G03G15/80 , G03G15/162 , G03G15/0806 , G03G15/0131 , G03G15/5004 , G03G2215/00632
Abstract: An image forming apparatus includes an image carrying member, an intermediate transfer belt, a primary transfer roller, a first belt support roller, a secondary transfer roller, a second belt support roller, a current feeder, a controller, a current sensor, and a rectifier. The current sensor has a lead member. The rectifier shuts off a current passing from the second belt support roller to the ground if the voltage on the second belt support roller is less than a predetermined reference voltage. The controller controls the output current such that the secondary transfer current has a current value resulting from subtracting a leak current from the output current and, when the lead member is in a conducting state, keeps the voltage on the second belt support roller less than the reference voltage.
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公开(公告)号：US20160085202A1
公开(公告)日：2016-03-24
申请号：US14858655
申请日：2015-09-18
Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
Inventor： Keisuke OBA
IPC: G03G21/00
CPC classification number: G03G21/0011 , G03G15/161 , G03G2215/1661
Abstract: An image forming apparatus includes an image carrier, a rotating brush, a collecting roller, a cleaning blade, a sealing member and a side sealing member. The sealing member has an extension part extending outside from each end of the collecting roller in an axial direction. The sealing member comes into contact with the collecting roller between a contact area between the rotating brush and the collecting roller and the cleaning blade and then prevents backflow of the residue. The side sealing member lifts the extension part toward the collecting roller on an outside at a predetermined interval from a position corresponding to each side edge of a maximum-width sheet passing region on the image carrier.
Abstract translation: 图像形成装置包括图像载体，旋转刷，收集辊，清洁刮板，密封构件和侧密封构件。 密封构件具有从轴线方向从收集辊的两端延伸到外侧的延伸部。 密封构件在旋转刷和收集辊与清洁刮板之间的接触区域之间与收集辊接触，然后防止残留物的回流。 侧密封构件从与图像载体上的最大宽度片通过区域的每个侧边缘相对应的位置以预定间隔从外部向收集辊提升延伸部分。
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