Document sheet conveying device capable of lifting up and down discharge outlet

A document sheet conveying device comprising:

• a sheet feed tray on which a document sheet is stacked;
• a discharge tray provided below the sheet feed tray;
• a conveyance mechanism configured to convey the document sheet from the sheet feed tray to the discharge tray via a reading position;
• a guide portion configured to, at a position downstream of the reading position in a conveyance direction of the document sheet, guide the document sheet to be conveyed;
• a discharge outlet which is provided at a downstream end of the guide portion in the conveyance direction and through which the document sheet is discharged to the discharge tray;
• a first swinging shaft provided at an upstream end of the guide portion in the conveyance direction, extending in a width direction intersecting the conveyance direction, and swingably supporting the guide portion;
• a drive portion configured to swing the guide portion around the first swinging shaft;
• a flexible sheet member having one end fixed to an upstream end of the discharge tray in the conveyance direction, and the other end supported by the guide portion, the sheet member which is, as the guide portion is lifted up, drawn out from a part of the guide portion below the discharge outlet, and is stretched between the guide portion and the upstream end of the discharge tray;
• a biasing member having one end coupled with the guide portion and the other end coupled with the other end of the sheet member, the biasing member being configured to bias the sheet member in a drawn direction in which the sheet member is drawn into the guide portion;
• and
• a tension member provided along the width direction at a lower part of the guide portion below the discharge outlet, and configured to stretch the sheet member between the upstream end of the discharge tray in the conveyance direction and the lower part of the guide portion.