DOCUMENT CONVEYING DEVICE

• Main Author: KANEKO SADAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 05.03.2020
• Subjects: CONVEYING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; PACKING; PERFORMING OPERATIONS; PICTORIAL COMMUNICATION, e.g. TELEVISION; STORING; TRANSPORTING

To provide a document conveying device capable of accurately detecting an abnormal state of the document under conveyance even in a small-sized document conveying device.SOLUTION: A document conveying device includes a document conveying part for conveying documents along a conveyance path, a speed calculation part for detecting a moving amount of the documents based on images obtained by photographing the documents to calculate a moving speed of the documents, an abnormal conveyance determination part for determining whether the documents are abnormally conveyed by the document conveying part from the results calculated by the speed calculation part, a speed data storage part for storing a plurality of speed data calculated by the speed calculation part, and an abnormal speed count part for counting the number of abnormal speed data of a first speed or faster based on a plurality of the speed data stored in the speed data storage part; the abnormal conveyance determination part determines whether the documents are abnormally conveyed by the document conveying part based on the number or a ratio of the abnormal speed data to a plurality of the speed data stored in the speed data storage part.SELECTED DRAWING: Figure 20 【課題】小型化した原稿搬送装置に対しても、搬送時の原稿の異常を精度よく検出する。【解決手段】原稿を搬送路に沿って搬送する原稿搬送部と、上記原稿を撮像した原稿の画像に基づいて、上記原稿の移動量を検出し、上記原稿の移動速度を算出する速度算出部と、上記速度算出部の算出結果から、上記原稿搬送部による搬送が異常状態であるかどうかを判定する異常搬送判定部と、上記速度算出部が算出した複数の速度データを格納する速度データ格納部と、上記速度データ格納部に格納された複数の速度データに対し、第１速度以上となる異常速度データの数をカウントする異常速度カウント部とを備え、上記異常搬送判定部は、上記速度データ格納部に格納された複数の速度データに対する上記異常速度データの数または比率に基づいて、上記原稿搬送部による搬送が異常状態であるかどうかを判定することを特徴とする。【選択図】図２０