Patent ID: 6206365
Filing Date: 2001-03-27
Classification: B65H,G03G

Abstract:
A sheet post-processing device, comprising:ejection means, provided vertically movable, onto which a sheet on which an image is already formed is ejected after undergoing post processing;sorting means for sorting the sheet on the ejection means by reciprocating the ejection means horizontally and at a right angle to an ejection direction of the sheet;sheet edge stopper columns, provided to be horizontally freely rotatable, for aligning a trailing edge of the sheet ejected onto the ejection means disposed diagonally upward with respect to the ejection direction; andlinking means for rotating the sheet edge stopper columns in accordance with a horizontal movement of the ejection means so as to horizontally move the sheets already aligned, and, when the ejection means is moved vertically, lifting and lowering the ejection means in a manner causing little friction between the linking means and the sheet edge stopper columns without rotating the sheet edge stopper columns,wherein the linking means includes freely rotatable friction rollers provided integrally to the ejection means,the linking means being disposed at a right angle to, and in touch with, the sheet edge stopper columns, and rotating the sheet edge stopper columns when the ejection means is moved horizontally.