Patent ID: 9682836
Date: 2017-06-20
CPC Classifications: B65H,G03G

Claim:
1. A sheet conveying device configured to convey a sheet toward a device at a conveying destination in a normal operation state and to interrupt the sheet conveying operation toward the device at the conveying destination when a jam is detected, the sheet conveying device comprising: a conveying unit configured to convey a sheet along a conveying path; a switching unit configured to switch a sheet conveying destination from a branch point as a downstream end of the conveying path to any one of a delivery path extending toward the device at the sheet conveying destination and a reversing port formed as an opening of a casing of the sheet conveying device so that a space outside the casing is used as a space for reversing a sheet conveying direction; a delivering unit configured to deliver the sheet on the delivery path toward the device at the sheet conveying destination; a reversing unit configured to first convey the sheet from the reversing port toward the outside of the casing to a position in which a part of the sheet protrudes and then delivers the sheet from the position toward a circulation path while reversing the conveying direction of the sheet; a circulating unit configured to convey the sheet delivered toward the circulation path along the circulation path and return the sheet to the conveying path while the sheet is reversed; and a control unit configured to detect a jam of a first sheet in the device at the conveying destination, and to control the conveying unit, the reversing unit, the delivering unit, the circulating unit, and the switching unit so that a second sheet is continuously conveyed until a tail end of the second sheet in the sheet conveying direction passes through the branch point, and a conveying destination of a third sheet reaching the branch point is switched to the reversing port after the tail end of the second sheet in the sheet conveying direction passes through the branch point, so that the third sheet is purged from the reversing port toward the outside of the casing while not being reversed when the second sheet conveyed from the branch point to the delivery path currently passes through the branch point and there is the third sheet currently conveyed by at least one of the conveying unit, the reversing unit, and the circulating unit at the jam detection time point of the first sheet in the device at the conveying destination.