Document-Feed System Although this unit does not have a sensor that detects whether or not a document is in the document feed tray, it has a document-feed sensor that detects the leading and trailing edges of the paper. The document-feed system does not have a document-feed solenoid. Rather, at the moment the main motor rotates, the pickup roller also rotates and a document is fed to the inside of the unit. The document inside the unit is then fed to the delivery slot by the scan roller after being scanned. The scan roller rotation speed is four times the rotation speed of the pickup roller. 2-2 Functional Overview EN