Patent ID: 7494121
Filing Date: 2009-02-24
Classification: B65H

Abstract:
1. A sheets stacking system for stacking a multiplicity of flimsy print media sheets with reduced curled sheets stacking problems, comprising: an automatically variable configuration sheet stacking tray system having a rigidly arcuately shaped sheet stack supporting surface area and a spaced plurality of repositionable sheet supporting members normally upstanding over areas of said rigidly arcuately shaped sheet stack supporting surface area to define a first sheet stack supporting surface which is substantially more planar than said rigidly arcuately shaped sheet stack supporting surface area, said automatically variable configuration sheet stacking tray system supporting a preset limited amount of said flimsy print media sheets stacked on said repositionable sheet supporting members above at least the majority of said rigidly arcuately shaped sheet stack supporting surface area in a stacking configuration thereof which is substantially more planar than said arcuate shape of said rigidly arcuately shaped sheet stack supporting surface area, said repositionable sheet supporting members being automatically repositionable under the control of a controller downwardly towards said rigidly arcuately shaped sheet stack supporting surface area in response to an amount of said flimsy print media sheets being stacked on top of said repositionable sheet supporting members in excess of said preset limited amount thereof, to thereby automatically vary the stack supporting configuration of said automatically variable configuration sheet stacking tray system towards said rigidly arcuately shaped sheet stack supporting surface area.