Patent ID: 9709944
Date: 2017-07-18
CPC Classifications: B65H,G03G

Claim:
1. A sheet post-processing device for post-processing of a recording sheet ejected from an image forming device in an ejection direction, the sheet post-processing device comprising: a first tray on which the recording sheet is placed after ejection; a push-out member configured to push out, in a push-out direction different from the ejection direction, the recording sheet placed on the first tray; and a guide member disposed adjacent to an ejection direction downstream end of the first tray, the guide member being configured to support a portion of the recording sheet that protrudes from the first tray in the ejection direction, wherein the guide member includes a resistive force reduction unit configured to reduce a resistive force that occurs due to contact between the guide member and the recording sheet, the resistive force hindering the pushing out of the recording sheet when the push-out member pushes out the recording sheet, wherein the guide member has a main body having a sheet placement surface on which the recording sheet is placed, the resistive force reduction unit includes a roller rotatably attached to the main body and rotatable in the push-out direction, a portion of a rotating surface of the roller protrudes from the sheet placement surface, the guide member is movable to a position at which the guide member supports a portion of the recording sheet that protrudes from the first tray in the ejection direction and to a position at which the guide member does not support a portion of the recording sheet that protrudes from the first tray in the ejection direction, and the resistive force reduction unit reduces the resistive force at a position where the portion of the recording sheet that protrudes from the first tray in the ejection direction is supported.