SHEET CONVEYING DEVICE, DOCUMENT CONVEYING DEVICE, SHEET READER, AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a document conveying device excellent in operability while maintaining high productivity by keeping paper feed timing early.;SOLUTION: The sheet conveying device 150 includes: a pickup roller 7 drawing a sheet 1P from a sheet bundle 1 set on a sheet stacking part A; a pickup roller separating/pressure-contacting means (moving means) for separating the pickup roller from or bringing the pickup roller into pressure contact with the uppermost surface of the sheets; a paper feeding member and a preventing member 12 preventing the conveyance of documents by the paper feeding member; a separating part B for separating the sheets fed by the pickup roller 7 one by one and conveying them downstream; and a detecting means 251 for detecting the presence/absence of movement of the documents near or upstream of the separating part. At least when the sheet bundle 1 is set on the sheet stacking part A, the detecting means 251 is not in contact with the sheet 1P.;COPYRIGHT: (C)2012,JPO&INPIT