Patent ID: 8260158
Filing Date: 2012-09-04
Classification: G03G

Abstract:
1. A recording sheet processing device that is disposed between an image forming device and a finishing device performing finishing processing on a recording sheet discharged from the image forming device, the recording sheet processing device including a stack tray for collecting, when sheet jam occurs where a recording sheet gets jammed inside the finishing device, a recording sheet left inside the image forming device or a recording sheet left inside a recording sheet feeding unit that feeds a recording sheet to the image forming device, so that the recording sheet is not fed to the finishing device, the recording sheet processing device comprising: a first conveying path leading to the finishing device; a second conveying path leading to the stack tray; a path switching mechanism that switches conveying paths between the first conveying path and the second conveying path; a conveying mechanism that is located in the first conveying path at a downstream side of the path switching mechanism in a recording sheet conveying direction and that sandwiches and conveys a recording sheet when the path switching mechanism has switched the conveying path to the first conveying path; a conveying guide member that is disposed close to the conveying mechanism and that is configured to change positions between a first position where the conveying guide member constitutes part of the first conveying path and a second position where the conveying guide member opens the first conveying path at an opening; and a control unit that controls operations of the path switching mechanism, the conveying mechanism, and the conveying guide member, wherein the control unit when sheet jam occurs and if a first recording sheet remains over the path switching mechanism, conveys the first recording sheet further so that it passes over the path switching mechanism and reaches up to the conveying mechanism, causes the conveying guide member to be positioned at the second position so that the first recording sheet falls down due to own weight through the opening in the first conveying path and thereby collected in the stack tray, and after a rear end of the first recording sheet has passed over the path switching mechanism due to driving of the conveying mechanism, causes the path switching mechanism to switch the conveying path to the second path so that a subsequent second recording sheet yet to reach the path switching mechanism is guided to the stack tray.