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公开(公告)号：US20220227596A1
公开(公告)日：2022-07-21
申请号：US17539319
申请日：2021-12-01
发明人： Yoshinao Chiba , Shingo Iwami , Koji Suzuki , Yuma Inui , Yoshiya Numata
摘要： A sheet feeding device includes a feeding roller pair, a detecting portion, a first changing portion, a second changing portion, and a controller for controlling the first changing portion and the second changing portion. The controller starts a first feeding operation for feeding a sheet toward the obliquely feeding roller pair in a nipping state of the feeding roller pair and then starts a second feeding operation for feeding the sheet for abutting a side end of the sheet against the reference member in the nipping state of the obliquely feeding roller pair. The controller changes, after the first feeding operation is started and before the second feeding operation is started, a start timing of the second feeding operation on the basis of a detection result of a position of the side end of the sheet detected by the detecting portion.
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公开(公告)号：US09254973B2
公开(公告)日：2016-02-09
申请号：US14525507
申请日：2014-10-28
发明人： Toshiki Ishida , Yoshinao Chiba
CPC分类号： B65H1/18 , B65H1/14 , B65H7/02 , B65H2511/152 , B65H2513/108 , B65H2513/50 , B65H2220/01 , B65H2220/03
摘要： An image forming apparatus includes: a sheet storage portion having a sheet stacking portion, a sheet feed portion, a drive portion configured to be capable of switching a lifting speed when lifting the sheet stacking portion between a first lifting speed and a second lifting speed, a height detecting portion configured to be capable of detecting the fact that the sheet reaches a decelerating position for switching the lifting speed of the sheet stacking portion from the first lifting speed to the second lifting speed, a time counting portion, and a control unit. The control unit computes the sheet stacking amount of the sheet stacking portion by using a relationship among the lifting time from a start of the lifting operation of the sheet stacking portion until the sheet reaches a decelerating position, the first lifting speed, and a heightwise position of the decelerating position when the sheet stacked on the sheet stacking portion is lifted to the decelerating position at the first lifting speed by the drive portion and then is lifted to a feeding position at the second lifting speed.
摘要翻译： 图像形成装置包括：片材存储部分，具有片材堆叠部分，片材进给部分，驱动部分，其构造成能够在第一提升速度和第二提升速度之间提升片材堆叠部分时切换提升速度， 高度检测部，其能够检测纸张到达用于将纸张堆叠部分的提升速度从第一提升速度切换到第二提升速度的减速位置的事实，时间计数部分和控制单元。 控制单元通过使用从片材堆叠部分的提升操作开始到片材到达减速位置的提升时间之间的关系，第一提升速度和高度位置来计算片材堆叠部分的片材堆积量 当堆叠在纸张堆叠部分上的纸张被驱动部分以第一提升速度提升到减速位置，然后以第二提升速度提升到进给位置时减速位置。
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公开(公告)号：US20130221607A1
公开(公告)日：2013-08-29
申请号：US13709415
申请日：2012-12-10
发明人： Yoshinao Chiba
IPC分类号： B65H3/06
CPC分类号： B65H3/0684 , B65H1/14 , B65H7/02 , B65H2511/515 , B65H2513/40 , B65H2515/112 , B65H2515/34 , B65H2553/412 , B65H2220/01 , B65H2220/11 , B65H2220/02
摘要： Provided are a sheet feeding device and an image forming apparatus which are capable of stably feeding sheets having a different basis weight.When lifting a sheet supporting plate (50) vertically movably provided in a sheet feeding cassette (51), a controller controls a lifting and lowering mechanism (55A) which lifts and lowers the sheet supporting plate (50), based on basis weight information from an inputting portion. The controller stops the sheet supporting portion (50) at a position where an abutting force causing a feeding roller (56) biased by a feeding roller pressure spring (58) to abut against a sheet (S) is increased as the basis weight of the sheet is increased.
摘要翻译： 提供能够稳定地供给具有不同基重的片材的片材进给装置和图像形成装置。 当提升垂直移动地设置在供纸盒（51）中的片材支撑板（50）时，控制器控制提升和降低片材支撑板（50）的提升和降低机构（55A），基于来自 输入部。 控制器将片材支撑部分（50）停止在由馈送辊压力弹簧（58）偏压的馈送辊（56）抵靠片材（S）的邻接力作为基础重量的位置上， 纸张增加。
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公开(公告)号：US11952239B2
公开(公告)日：2024-04-09
申请号：US17539319
申请日：2021-12-01
发明人： Yoshinao Chiba , Shingo Iwami , Koji Suzuki , Yuma Inui , Yoshiya Numata
CPC分类号： B65H9/166 , B65H7/10 , B65H7/14 , B65H9/04 , G03G15/6529 , G03G15/6564 , B65H2301/361 , B65H2404/1441 , B65H2801/06
摘要： A sheet feeding device includes a feeding roller pair, a detecting portion, a first changing portion, a second changing portion, and a controller for controlling the first changing portion and the second changing portion. The controller starts a first feeding operation for feeding a sheet toward the obliquely feeding roller pair in a nipping state of the feeding roller pair and then starts a second feeding operation for feeding the sheet for abutting a side end of the sheet against the reference member in the nipping state of the obliquely feeding roller pair. The controller changes, after the first feeding operation is started and before the second feeding operation is started, a start timing of the second feeding operation on the basis of a detection result of a position of the side end of the sheet detected by the detecting portion.
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公开(公告)号：US20230017154A1
公开(公告)日：2023-01-19
申请号：US17841869
申请日：2022-06-16
发明人： Yuma Inui , Shingo Iwami , Koji Suzuki , Yoshiya Numata , Yoshinao Chiba
摘要： A sheet conveyance apparatus includes a conveyance guide configured to guide a sheet along a conveyance center line extending in a conveyance direction, a reference member including an abutment surface, a conveyance unit configured to convey the sheet while abutting a first edge of the sheet against the abutment surface, a detection unit configured to detect a first angle formed between the first edge of the sheet and a second edge adjacent to the first edge, a moving unit configured to move the reference member so as to change a second angle formed between the abutment surface and the conveyance center line, and a control unit configured to perform a movement process in which the moving unit moves the reference member such that, when the first angle is referred to as α, the second angle becomes an absolute value of a difference 90 degrees minus α.
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公开(公告)号：US11339015B2
公开(公告)日：2022-05-24
申请号：US16703961
申请日：2019-12-05
发明人： Yoshinao Chiba
IPC分类号： B65H3/06
摘要： A sheet feeding apparatus includes a storage portion, a sheet supporting portion, a feed portion, a drive portion to output driving force that lifts the sheet supporting portion, and a rotation shaft rotatably supported by the storage portion and including an engaging portion disposed on one end side in an axial direction of the rotation shaft. The engaging portion engages with the drive portion, and a pressing portion is fixed to the rotation shaft and presses the sheet supporting portion from below when the rotation shaft is rotated by the drive portion. A rotary damper joins with the rotation shaft on another end side of the rotation shaft and reduces rotary motion of the rotation shaft. The pressing portion is disposed between the engaging portion and the rotary damper in the axial direction.
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公开(公告)号：US10543996B2
公开(公告)日：2020-01-28
申请号：US15922994
申请日：2018-03-16
发明人： Yoshinao Chiba
摘要： A sheet feeding apparatus includes a sheet supporting portion, a rotary feeding member configured to feed the sheet, a regulating portion configured to regulate a position of the edge portion, and a force applying portion that is provided separately from the rotary feeding member. The force applying portion contacts the sheet supported on the sheet supporting portion upstream in a conveyance direction of the rotary feeding member and applies a force to turn the sheet fed by the rotary feeding member.
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公开(公告)号：US20190119058A1
公开(公告)日：2019-04-25
申请号：US16142186
申请日：2018-09-26
发明人： Yoshinao Chiba
CPC分类号： B65H3/0669 , B65H3/0684 , B65H3/5215 , B65H7/02 , B65H2513/50 , B65H2515/32 , B65H2515/704 , B65H2515/708 , B65H2701/1311 , B65H2701/1313 , B65H2801/06 , B65H2220/01 , B65H2220/03 , B65H2220/02
摘要： A sheet feeding apparatus includes a sheet stacking portion, a sheet feeding unit including a rotary feeding member and a separation member, the sheet feeding unit executing a feeding operation of feeding the sheet, a load detecting unit configured to detect a conveyance load acting on the sheet feeding unit, a control unit configured to control the sheet feeding unit such that the sheet feeding unit executes the feeding operation to a second sheet succeeding to a first sheet with a first feeding interval or with a second feeding interval which is longer than the first feeding interval in response to a detection result of the load detecting unit while feeding the first sheet, wherein each of the first and second feeding intervals is defined by a time interval from starting to feed the first sheet until starting to feed the second sheet.
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公开(公告)号：US20230130208A1
公开(公告)日：2023-04-27
申请号：US17965086
申请日：2022-10-13
发明人： Hiroki Takano , Yuma Inui , Shingo Iwami , Yoshinao Chiba , Koji Suzuki , Yoshiya Numata
摘要： A sheet conveyance apparatus includes a conveyance roller, an abutment member including an abutment surface, an obliquely conveying roller configured to convey the sheet such that the side edge portion is moved toward the abutment surface, a sheet side-edge detection portion, and a controller. The controller is configured to control the conveyance force of the obliquely conveying roller at a first conveyance force until a predetermined time has elapsed, in an abutment operation in which the sheet is abutted against the abutment surface by the obliquely conveying roller, and control the conveyance force of the obliquely conveying roller at a second conveyance force larger than the first conveyance force if the predetermined time has elapsed and the position of the side edge portion of the sheet detected by the sheet side-edge detection portion is out of a predetermined range.
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公开(公告)号：US20220144571A1
公开(公告)日：2022-05-12
申请号：US17505812
申请日：2021-10-20
发明人： Shingo Iwami , Yoshinao Chiba , Koji Suzuki , Yuma Inui , Yoshiya Numata
摘要： A sheet conveyance apparatus includes a conveyance roller, an abutment member including an abutment surface against which a side edge, in a width direction, of the sheet abuts, and configured to correct a skew of the sheet, an obliquely conveying roller configured to convey the sheet such as the side edge of the sheet is conveyed toward the abutment surface, a sheet side edge detection portion configured to detect a position of the side edge of the sheet, and a control unit configured to control that a conveyance force, in the width direction, by the obliquely conveying roller in response to a detection result of the sheet side edge detection portion becomes smaller than that in an abutment movement.
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