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公开(公告)号：US20220380152A1
公开(公告)日：2022-12-01
申请号：US17740172
申请日：2022-05-09
发明人： Kazuhiro Hosohara , Tomoya Tateishi
摘要： A sheet feeding device includes a tray, a feeding member, a conveying member, a separation member, a transmission unit, and a biasing member. The separation member abuts the conveying member and separates a single sheet from sheets fed by the feeding member. The transmission unit includes first and second portions respectively having first and second transmission surfaces. Where the first and second transmission surfaces abut each other, the first portion drives the second portion that drives the feeding member. The biasing member biases either of the first and second portions so that the first and second transmission surfaces move away from each other. The conveying member is driven in a state where the separation member abuts the conveying member and the feeding member abuts the sheet stacked on the tray and is stopped. Thereafter, the first and second transmission surfaces abut each other, and the feeding member is driven.
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公开(公告)号：US11472651B2
公开(公告)日：2022-10-18
申请号：US17308263
申请日：2021-05-05
发明人： Takuro Murata
摘要： A document conveying device includes a document tray, a first rotary member, a first motor, a second rotary member, a second motor, a document feed sensor, and a controller. The controller counts a counted time from the time point that the first motor starts to rotate until the leading end of a document reaches the document feed sensor. When the time resulting from subtracting the counted time from a required sheet-to-sheet time interval is longer than the required speed change time, the controller performs deceleration and post-deceleration acceleration for the first motor. The required speed change time is the time required for speed change from the first rotation speed to the second rotation speed.
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公开(公告)号：US11472650B2
公开(公告)日：2022-10-18
申请号：US17083122
申请日：2020-10-28
申请人： PFU LIMITED
发明人： Tomoyuki Niwata , Ken Funaki , Hiroyuki Kitano
摘要： A medium conveying apparatus includes a medium tray, a feed roller, an upper guide, a movement sensor including an arm movably provided by the fed medium on the upper guide and on an upstream side of the feed roller, to generate a movement amount signal corresponding to a movement amount of the arm, a medium sensor to detect a presence of the medium at a predetermined position of the medium tray, a processor to determine whether a feeding abnormality of the medium has occurred based on the movement amount signal, detect a size of the medium placed on the medium tray based on a detection result by the medium sensor, and stop feeding of the medium by the feed roller when the processor determines that the feeding abnormality of the media has occurred and the detected size of the media is equal to or less than a predetermined size.
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公开(公告)号：US20220317617A1
公开(公告)日：2022-10-06
申请号：US17221952
申请日：2021-04-05
发明人： Shinya Sugimoto
摘要： An image forming apparatus includes a paper feeding cassette, a first conveying unit, a lift mechanism, a motor, a second conveying unit, and a control unit. The controller drives the motor and, if a value indicating a movement amount of the tray moving from when the lift mechanism starts the lifting of the tray until when a position of the top part reaches a first position is a first value, matches a position of the first conveying unit, which comes into contact with the top part to thereby rise together with the tray, with a second position and, if the value indicating the movement amount is a second value larger than the first value, matches the position of the first conveying unit, which comes into contact with the top part to thereby rise together with the tray, with a third position lower than the second position.
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公开(公告)号：US11440756B2
公开(公告)日：2022-09-13
申请号：US17023135
申请日：2020-09-16
发明人： Satoshi Tsuda
IPC分类号： B65H3/06
摘要： A conveyance rotating body is rotatably supported by a support member. A second rotational axis at a rotation center of a driven transmission member is disposed at a position different from a position of a first rotational axis. When a feeding unit is attached to a sheet feeding apparatus, a drive transmission member and the driven transmission member engage with each other. When a driving force is transmitted from the drive transmission member to the driven transmission member, the feeding unit receives a force in an attachment direction of the feeding unit and is positioned with respect to the sheet feeding apparatus.
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公开(公告)号：US11427421B2
公开(公告)日：2022-08-30
申请号：US17046134
申请日：2018-04-20
摘要： Examples relating to determining stack height in imaging devices are described herein. According to one example, an imaging device includes an input roller assembly to transport a print medium towards an image-forming assembly of the imaging device. The input roller assembly can include a pinch roller for drawing the print medium from a media stack. The imaging device further includes a pressure plate movably coupled to a body portion of the imaging device and biased towards the pinch roller. The pressure plate may hold the media stack between itself and the pinch roller and is movable by a first distance from a neutral position when the media stack is there between. The first distance is measured from a fixed point to a measurement region on the pressure plate and can indicate an instantaneous stack height of the media stack.
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公开(公告)号：US11427419B2
公开(公告)日：2022-08-30
申请号：US17014095
申请日：2020-09-08
发明人： Mariko Uchida
IPC分类号： B65H3/06
摘要： A sheet feeder includes a frame, a roller holder, and a holder stopper. The roller holder includes a feed roller for feeding a sheet. The roller holder is detachably attachable to the frame. The holder stopper is configured to move between a restricting position and a non-restricting position. In a case where the holder stopper is located at the restricting position, the holder stopper restricts the roller holder from moving from an attached position at which the roller holder is fixed to the frame. In a case where the holder stopper is located at the non-restricting position, the holder stopper allows the roller holder to move relative to the frame.
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公开(公告)号：US20220267106A1
公开(公告)日：2022-08-25
申请号：US17567154
申请日：2022-01-03
发明人： I Chuan Hong , Lung Chen
IPC分类号： B65H3/06
摘要： A bi-directional paper pickup mechanism includes a pickup roller, a fastening structure, an input shaft, a first ratchet element, a second ratchet element, an actuating unit, a first transmission rotor and a second transmission rotor. The pickup roller has an inner space. The fastening structure is disposed in the inner space. The input shaft is accommodated in the inner space, and one end of the input shaft is pivotally connected to the fastening structure. The first ratchet element is mounted around the input shaft. The second ratchet element is mounted around the one end of the input shaft. The actuating unit is fastened around a middle of the input shaft to synchronously rotate with the input shaft. The first transmission rotor is mounted around the one end of the input shaft. The second transmission rotor is mounted around the other end of the input shaft.
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49.发明申请公开(公告)号：US20220169458A1
公开(公告)日：2022-06-02
申请号：US17674848
申请日：2022-02-18
申请人： Ricoh Company, Ltd.
发明人： Yoshito SUZUKI , Tomohiro FURUHASHI , Wataru TAKAHASHI , Sho ASANO , Shinya MONMA , Joji AKIYAMA , Wataru NOZAKI , Yohsuke HARAGUCHI , Yuji SUZUKI , Yuusuke SHIBASAKI , Takuya MORINAGA
摘要： A sheet processing device sandwiches a sheet-shaped medium in a two-ply sheet in which two sheets are overlaid and partially bonded. The sheet processing device includes a separator, a conveyor, and a switching member. The separator separates the two sheets of the two-ply sheet. The conveyor is disposed downstream from the separator in a sheet conveyance direction and conveys the two-ply sheet. The switching member is disposed downstream from the conveyor in the sheet conveyance direction. The switching member switches a conveyance path of the two-ply sheet to convey the two-ply sheet to a fixing path on which fixing processing is performed on the two-ply sheet or a non-fixing path on which no fixing processing is performed on the two-ply sheet.
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50.发明申请公开(公告)号：US20220169457A1
公开(公告)日：2022-06-02
申请号：US17450953
申请日：2021-10-14
申请人： PFU LIMITED
发明人： Tomofumi Kumahashi , Seiki Awazu , Takayuki Mori
摘要： A medium conveying apparatus includes an imaging unit provided to be movable in a direction perpendicular to a conveying surface for conveying a medium, to image the medium, a roller pair provided on an upstream side of the imaging unit in a medium conveying direction, the roller pair including a first roller provided to be movable in a direction perpendicular to the conveying surface, and a second roller facing the first roller, and a conveyance guide provided on a rotation shaft of the first roller, to move in conjunction with a movement of the first roller. The conveyance guide includes a guide surface extending at least from a downstream end portion of a nip portion of the roller pair to an upstream end portion of the imaging unit in the medium conveying direction and being flush with a lower surface of the imaging unit.
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