Patent ID: 7591455
Filing Date: 2009-09-22
Classification: B42C,B65H

Abstract:
1. A sheet finishing apparatus for post-processing sheets of paper after image forming, comprising: a pair of paper supply rollers configured to receive and convey sheets of paper ejected from an image forming apparatus; a standby tray configured to make said sheets of paper ejected from said paper supply rollers stand by; a processing tray arranged under said standby tray and configured to load said sheets of paper dropped and supplied from said standby tray and/or said sheets of paper ejected from said image forming apparatus not via said standby tray; a processing mechanism configured to post-process said sheets of paper loaded on said processing tray; a paper ejection tray configured to load said post-processed sheets of paper ejected from said processing tray; a standby tray guide extending over the standby tray and configured to control movement and posture of said sheets of paper ejected from said paper supply rollers to said standby tray, the standby tray guide being born rotatably on a side of said standby tray and a front end of the standby tray guide being rounded so as to crush upward curls of said sheets of paper; and an assist arm configured to prevent a rear end side of said sheets of paper conveyed from said paper supply rollers from rising and to press the rear end of said sheets of paper to the standby tray, a side of said assist arm in contact with said sheets of paper having a weight heavier than a weight of the sheets of paper to prevent the sheets of paper from unexpected movement, wherein said standby tray is composed of at least a pair of tray members for respectively supporting both sides of said sheets and configured to slide and move said tray members to drop and feed said sheets onto said processing tray.