Sheet finishing apparatus

Abstract

A sheet finishing apparatus of the present invention is composed of, in horizontal matching on a standby tray, a horizontal matching damper portion for mitigating a shock to the side of each of the sheets of paper and a horizontal matching member composed of a horizontal matching plate portion which supports the horizontal matching damper portion and is connected to it via a connection portion having elastic force. Even if the horizontal matching damper portion receives force in the direction of the width of the sheets of paper, it intends to return to its original position, so that smooth horizontal matching can be executed.

1 . A sheet finishing apparatus for post-processing sheets of paper after image forming comprising: 
 a pair of paper supply rollers for receiving and conveying sheets of paper ejected from an image forming apparatus,    a standby tray for making said sheets of paper ejected from said paper supply rollers stand by,    a processing tray arranged under said standby tray for loading 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 for post-processing said sheets of paper loaded on said processing tray,    a paper ejection tray for loading said post-processed sheets of paper ejected from said processing tray, and    a horizontal matching member for matching horizontally said sheets of paper ejected from said paper supply rollers to said standby tray, wherein:    said horizontal matching member is composed of a horizontal matching damper portion, when horizontally matching said sheets of paper, for mitigating a shock to a side of each of said sheets of paper and a horizontal matching plate portion which supports said horizontal matching damper portion and is connected to it via a connection portion having elastic force.    
   
   
       2 . A sheet finishing apparatus according to  claim 1  wherein: 
 said horizontal matching plate portion, except said connection portion, is hollowed out in an inner peripheral shape almost similar to an outer peripheral shape of said horizontal matching damper portion.    
   
   
       3 . A sheet finishing apparatus according to  claim 1  wherein: 
 said horizontal matching damper portion is positioned one step higher than said horizontal matching plate portion.    
   
   
       4 . A sheet finishing apparatus according to  claim 1  wherein: 
 a part of said horizontal matching plate is made elastic.    
   
   
       5 . A sheet finishing apparatus according to  claim 1  wherein: 
 said horizontal matching plate portion is composed of a rigid body and said horizontal matching damper portion is composed of an elastic body.    
   
   
       6 . A sheet finishing apparatus according to  claim 1  wherein: 
 both said horizontal matching plate portion and said horizontal matching damper portion are composed of an elastic body.    
   
   
       7 . A sheet finishing apparatus according to  claim 1  wherein: 
 said horizontal matching damper portion and said horizontal matching plate portion are molded and connected so as to be provided with elastic force.