Patent ID: 6231039
Filing Date: 2001-05-15
Classification: B42C,B65H

Abstract:
A sheet post-processing apparatus for post-processing sheets discharged from discharging section of an image forming system, comprising:a conveying device for conveying said sheets discharged from said image forming system;a pair of upper trays for accommodating said sheets conveyed by said conveying devices, and being horizontally moved in order to align said sheets accommodated therein and fall down said aligned sheets;a pair of upper tray driving devices for providing a driving force to said upper trays;a transmission unit for transmitting said driving force of said upper tray driving device to said upper trays;a lower tray for loading said sheets fallen from said upper trays; anda lower tray driving device for moving said lower tray in upper and lower directions in order to retain distance between said upper trays and said lower tray in a predetermined range.