公开(公告)号：US09926154B1

公开(公告)日：2018-03-27

申请号：US15440187

申请日：2017-02-23

Applicant: Foxlink Image Technology Co., Ltd.

Inventor： Yuan Hao Tsai ,  Chien Jen Chen ,  Shih Wei Tseng ,  Yi Hong Chen

IPC: B65H7/02 ,  B65H3/06 ,  B65H5/06 ,  B41L21/02

CPC classification number: B65H7/02 ,  B41L21/02 ,  B65H3/06 ,  B65H5/06 ,  B65H2553/30

Abstract: A paper feeding device includes a pickup mechanism, a conveying mechanism disposed behind the pickup mechanism, a separation mechanism disposed behind the conveying mechanism, a feeding mechanism disposed behind the separation mechanism, a transmission mechanism driving the pickup mechanism, the conveying mechanism, the separation mechanism and the feeding mechanism, and an ultrasonic circuit unit disposed between the separation mechanism and the transmission mechanism. The ultrasonic circuit unit includes an ultrasonic detecting module, an amplifying circuit unit electrically connected with the ultrasonic detecting module, a paper density detecting unit electrically connected with the amplifying circuit unit, an analog-to-digital converter electrically connected with the paper density detecting unit, a processor electrically connected with the analog-to-digital converter, and a driving unit electrically connected with the processor and the transmission mechanism.

公开(公告)号：US09787866B1

公开(公告)日：2017-10-10

申请号：US15355164

申请日：2016-11-18

Applicant: Foxlink Image Technology Co., Ltd.

Inventor： Hsuan Hui Wang ,  Chi Wen Chen ,  Ting Chieh Lin ,  Chien Jen Chen ,  Chang Hsien Sung

IPC: H04N1/04 ,  H04N1/00

CPC classification number: H04N1/00771 ,  H04N1/00588 ,  H04N1/00628 ,  H04N1/00689 ,  H04N1/00694 ,  H04N1/00748 ,  H04N2201/0081

Abstract: An image scanning method is applied in an image scanning device which includes an input tray and a paper feeding sensor. The method detects whether there are papers on the input tray in step one. If there are papers, step two is executed. Otherwise, the method ends and an error is reported. In step two, papers are separated and fed. Whether the papers contact the paper feeding sensor is detected in step three. The method executes step four if the papers contact the paper feeding sensor, and ends the method with an error message otherwise. In step four, the method scans and detects whether an image of a fed edge of each of the papers is abnormal. If the image is abnormal, the method ends and an error is reported. Otherwise, scanning continues.