公开(公告)号：US20220281703A1

公开(公告)日：2022-09-08

申请号：US17674775

申请日：2022-02-17

申请人： PFU Limited

发明人： Masaaki SAKAI

IPC分类号： B65H7/12 ,  B65H7/18

摘要： A medium conveying apparatus includes a conveying roller to convey a medium, an overlap detection sensor, a processor to detect an overlap portion in which it is determined that an overlap has occurred on the medium based on a detection output by the overlap detection sensor for the medium conveyed by the conveying roller, calculate an overlap length where the overlap portion is continuous based on a detection result of the overlap portion, determine whether a multi-feed has occurred based on the overlap length, and execute an abnormal processing for the multi-feed based on a determination result of the multi-feed. The processor determines that a first overlap portion and a second overlap portion are continuous when a distance between the first overlap portion and the second overlap portion is within a predetermined distance in calculating the overlap length.

公开(公告)号：US20230091074A1

公开(公告)日：2023-03-23

申请号：US17904579

申请日：2020-03-02

申请人： PFU LIMITED

发明人： Ayame TAKAYAMA ,  Masaaki SAKAI

IPC分类号： B65H7/12

摘要： Provided are a medium conveying apparatus, a control method, and a control program to enable more accurate detennination whether a medium conveyance abnormality has occurred. A medium conveying apparatus includes an ultrasonic transmitter capable of outputting an ultrasonic wave, an ultrasonic receiver opposed to the ultrasonic transmitter, to receive the ultrasonic wave and output an ultrasonic signal corresponding to the received ultrasonic wave, a pressure detection module to detect atmospheric pressure, based on the ultrasonic signal, a sound receiver to receive a sound and generate a sound signal corresponding to the received sound, an abnormality determination module to determine whether a medium conveyance abnormality has occurred, based on the sound signal, and a modification module to modify sensitivity of the sound receiver, correct the sound signal, or modify a criterion for determination of a medium conveyance abnormality by the abnormality determination module, based on the atmospheric pressure.

公开(公告)号：US20220073302A1

公开(公告)日：2022-03-10

申请号：US17310321

申请日：2019-03-20

申请人： PFU LIMITED

发明人： Kiichiro SHIMOSAKA ,  Masaaki SAKAI

IPC分类号： B65H7/12

摘要： Provided are a multi-feed detection apparatus, a control method, and a control program to suitably determine whether or not the multi-feed detection apparatus returns a fed medium to a direction of a medium tray when multi-feed has occurred. A multi-feed detection apparatus includes an ultrasonic sensor to generate an ultrasonic signal, a multi-feed determination module to determine that feeding of the medium is normal when a signal value of the ultrasonic signal is equal to or more than a first threshold value, and determine that a multi-feed of the medium has occurred when the signal value of the ultrasonic signal is less than the first threshold value, and a control module to control the feed module to return the fed medium to a direction of the medium tray when the signal value of the ultrasonic signal is less than a second threshold value smaller than the first threshold value.

公开(公告)号：US20220033210A1

公开(公告)日：2022-02-03

申请号：US17299284

申请日：2019-03-20

申请人： PFU LIMITED

发明人： Masaaki SAKAI

IPC分类号： B65H7/14 ,  H04N1/00

摘要： Provided are an image processing apparatus, a control method, and a control program to accurately determine whether or not a deflection of a fed medium has occurred, and to suitably control a feeding of the medium. A medium conveying apparatus includes a feed module to feed a medium, a motion detection module to detect a first change amount in a feeding direction of the medium placed on a medium tray and a second change amount in a direction perpendicular to a placing surface of the medium tray during feeding of the medium, a determination module to determine that a deflection of the medium has occurred when the first change amount is less than a first threshold value and the second change amount is equal to or more than a second threshold value, and a control module to stop feeding the medium according to the determination result.