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公开(公告)号：US11274005B2
公开(公告)日：2022-03-15
申请号：US15930271
申请日：2020-05-12
发明人： Tadaharu Kusumi
摘要： A sheet conveyance device includes a transmitter circuit, a receiver circuit, an integrator circuit which performs charging of electric charge outputted from the transmitter circuit and outputs a judgment voltage, a drive circuit, and a control circuit. The drive circuit feeds a drive signal to the transmitter circuit. At a lapse of a wait time after changing a level of a transmission instruction signal to a level instructing to feed the drive signal to the transmitter circuit, the control circuit makes the integrator circuit start to perform charging. When adjusting the wait time, the control circuit performs processing for adjustment a plurality of times. The control circuit makes the wait time different in each execution of the processing for adjustment. The control circuit determines a new wait time based on a magnitude of the judgment voltage recognized in each execution of the processing for adjustment.
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公开(公告)号：US11186457B2
公开(公告)日：2021-11-30
申请号：US16834160
申请日：2020-03-30
申请人： Konica Minolta Inc.
摘要： Provided is a sheet conveyance apparatus armored with a housing, the sheet conveyance apparatus includes: a sheet conveyor that feeds a sheet to a downstream side in a direction of conveyance; a conveyance guide that guides the sheet to be conveyed; an ultrasonic sensor that detects the sheet guided by the conveyance guide; and a shield member that is conductive, wherein the ultrasonic sensor includes: a transmitter that transmits an ultrasonic wave having a predetermined frequency; and a receiver that receives the ultrasonic wave, the transmitter and the receiver are arranged along the conveyance guide, and the shield member is disposed between the housing and the receiver in a sheet-face perpendicular direction at an ultrasonic-irradiation position of the sheet being conveyed, the shield member covering an entirety of the receiver in plan view in the sheet-face perpendicular direction.
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公开(公告)号：US11097915B2
公开(公告)日：2021-08-24
申请号：US15952670
申请日：2018-04-13
发明人： Keita Nakajima
摘要： An image forming apparatus includes a first detection unit, a second detection unit, a first conveyance unit, a second conveyance unit, which is provided on downstream in the conveyance direction with respect to the first detection unit and is configured to convey sheets, and a control unit. When the first detection unit does not detect a trailing edge of a first sheet before a first timing, the control unit stops the drive of the first conveyance unit and continues drive of the second conveyance unit, and when the second detection unit detects the trailing edge of the first sheet before a second timing later than the first timing, the control unit re-drives the first conveyance unit or stops the drive of the second conveyance unit in accordance with a sheet length of the first sheet in the conveyance direction.
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公开(公告)号：US11084675B2
公开(公告)日：2021-08-10
申请号：US16443599
申请日：2019-06-17
发明人： Takuya Hamada
摘要： A paper conveyance device includes a paper feed unit, a conveyance rotator, a conveyance guide, a multi-feed detection unit, and a control unit. The control unit causes an ultrasonic sensor to transmit an ultrasonic wave in a detection section. The control unit sets a detection execution section and a detection skip section in the detection section. The control unit does not determine whether multi-feed has occurred in the detection skip section. The control unit sets the detection skip section based on a time point at which vibration is applied to conveyed paper.
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公开(公告)号：US11053090B1
公开(公告)日：2021-07-06
申请号：US16294482
申请日：2019-03-06
发明人： Marc Noviello , Jeremy Jowers
摘要： A system for detecting envelopes from multi-fed documents in a scanning system with a scanning track along which documents move laterally toward a scanning station having a plurality of spaced apart penetrating detectors across the scanning track. The scanners detect a leading edge as a single layer material, i.e. without an air gap and the interior as having an air gap in the document scanned. If a document has an interior air gap, but the leading edge does not, it is first assumed to be an envelope.
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公开(公告)号：US11027934B2
公开(公告)日：2021-06-08
申请号：US16408623
申请日：2019-05-10
发明人： Eiji Osawa
摘要： A multi-feed detection device includes a transmission circuit substrate on which an ultrasonic transmitter transmitting an ultrasonic wave is installed, and an ultrasonic receiver receiving the ultrasonic wave. The ultrasonic transmitter transmits the ultrasonic wave in a direction intersecting a thickness direction of the transmission circuit substrate and at least one of the ultrasonic transmitter and the ultrasonic receiver has a plurality of ultrasonic elements.
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公开(公告)号：US20210061601A1
公开(公告)日：2021-03-04
申请号：US17010306
申请日：2020-09-02
申请人： Konica Minolta, Inc.
摘要： A conveyor conveys a sheet along a conveyance path provided with an ultrasonic sensor, and includes: an updating member that successively updates a parameter indicating aged deterioration of the conveyor; a searcher that searches a look-up table storing pieces of noise data of noises predicted to be superimposed on a detection signal of the ultrasonic sensor in accordance with a degree of the aged deterioration, and obtains a piece of noise data corresponding to a current parameter value of the conveyor; and a signal processor that uses, for signal processing, a remaining portion of the detection signal of the ultrasonic sensor excluding a portion corresponding to the piece of noise data obtained by the searcher.
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公开(公告)号：US20210039901A1
公开(公告)日：2021-02-11
申请号：US17076701
申请日：2020-10-21
发明人： John W. Brown , Edward F. Houston , Juan A. Roman , Leung M. Shiu , Riley H. Mayhall , Thomas A. Hillerich, JR. , Jacob L. Timm , Matthew G. Good , William P. McConnell , Robert L. Schlender , Christopher D. Austin
IPC分类号： B65H3/12 , B65H5/24 , B65H3/46 , B65H5/22 , B65H7/12 , B65G47/06 , B65G47/28 , B65G47/46 , B65G59/04
摘要： Embodiments of a system and method for shingulating, singulating, and synchronizing articles in an article feeder system are disclosed. The article feeder system may include a shingulating device configured to receive a stack of articles and to produce a positively lapped stack of articles, a plurality of picking devices configured to pick one or more articles from the positively lapped stack of articles and to produce one or more singulated articles, and one or more synchronization devices configured to deliver the one or more singulated articles to one or more sorter windows.
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公开(公告)号：US10815083B2
公开(公告)日：2020-10-27
申请号：US15989039
申请日：2018-05-24
发明人： John W. Brown , Edward F. Houston , Juan A. Roman , Leung M. Shiu , Riley H. Mayhall , Thomas A. Hillerich, Jr. , Jacob L. Timm , Matthew G. Good , William P. McConnell , Robert L. Schlender , Christopher D. Austin
IPC分类号： B65H3/12 , B65H5/24 , B65H3/46 , B65H5/22 , B65H7/12 , B65G47/06 , B65G47/28 , B65G47/46 , B65G59/04
摘要： Embodiments of a system and method for shingulating, singulating, and synchronizing articles in an article feeder system are disclosed. The article feeder system may include a shingulating device configured to receive a stack of articles and to produce a positively lapped stack of articles, a plurality of picking devices configured to pick one or more articles from the positively lapped stack of articles and to produce one or more singulated articles, and one or more synchronization devices configured to deliver the one or more singulated articles to one or more sorter windows.
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30.发明授权公开(公告)号：US10730712B2
公开(公告)日：2020-08-04
申请号：US15855345
申请日：2017-12-27
发明人： Makoto Arima
摘要： A conveyance apparatus is capable of detecting the presence or absence of multi feeding with high accuracy even when a received waveform varies due to a “noise from the circuit” and an “influence due to vibrations,” which are fixedly generated noise components. The conveyance apparatus includes an original conveying motor configured to convey an original; an ultrasonic transmitter, which is arranged at one of positions sandwiching a conveyance path along which the original is conveyed, and transmits an ultrasonic wave toward the conveyance path; and an ultrasonic receiver, which is arranged at the other one of the positions sandwiching the conveyance path, and receives the ultrasonic wave transmitted from the ultrasonic transmitter. The conveyance apparatus compares a received wave amplitude exhibited with sheet-presence against a threshold value determined based on a received wave amplitude exhibited with sheet-absence to determine whether the original is conveyed with multi feeding.
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