Patent ID: 8430397

Claim:
A sheet take-out device comprising: a main floor belt that conveys sheets that are placed in an upright state in a direction intersecting a conveying direction to a take-out portion; a take-out unit that takes out the sheets conveyed by the main floor belt one by one in order from the frontmost sheet; and a conveyance unit that conveys the sheets taken out by the take-out unit, wherein a failure in properly taking out sheets is improved by comprising: a sub-floor belt that is disposed at a location on the same plane as a conveyance face of the main floor belt and opposing a leading end in the conveying direction of the main floor belt, and that is capable of reverse conveyance, in which sheets are conveyed in a direction opposite to the conveying direction of the main floor belt; a tightness detection unit that detects the tightness of the sheets immediately prior to being taken out by the take-out unit; a height detection unit that detects the height of the sheets immediately prior to being taking out by the take-out unit; and a sub-floor control unit that sets a time for the reverse conveyance performed by the sub-floor belt according to a result of detection performed by the tightness detection unit and the sheet height obtained by the height detection unit.