Document sheet conveying device, image reading apparatus, and multifunction peripheral capable of housing discharge tray

A document sheet conveying device comprising:

• a supply tray that extends outward from a conveyance housing;
• a first discharge tray that faces the supply tray in a vertical direction;
• a second discharge tray provided on an opposite side of the supply tray across the conveyance housing and configured to rotate between a use posture which allows loading of a document sheet on the second discharge tray and a storage posture in which the second discharge tray serves as a part of the conveyance housing;
• a detection portion configured to detect a posture of the second discharge tray;
• a first conveying path formed linearly from the supply tray to a branch point inside the conveyance housing;
• a second conveying path formed in a U-shape from the branch point to the first discharge tray;
• a third conveying path formed linearly from the branch point to the second discharge tray;
• a switching portion provided at the branch point and configured to connect the first conveying path to one of the second conveying path and the third conveying path;
• a control device configured to control the switching portion;
• and
• a display input portion, wherein
• the control device controls the switching portion to connect the first conveying path to the third conveying path when the detection portion detects that the second discharge tray is in the use posture in a state where the first conveying path is connected to the second conveying path,
• the control device controls the switching portion to connect the first conveying path to the second conveying path when an instruction to connect the first conveying path to the second conveying path is received through a user operation on the display input portion in a state where the first conveying path is connected to the third conveying path, and
• the control device prohibits, when the second discharge tray is in the storage posture in the state where the first conveying path is connected to the third conveying path, the conveyance of the document sheet from the supply tray until the first conveying path is connected to the second conveying path or the second discharge tray changes the posture from the storage posture to the use posture.