Patent ID: 7828277

Claim:
A sheet storing device comprising: a conveyance device for conveying a sheet while holding the sheet, wherein the conveyance device conveys while holding such that a trailing edge of a preceding sheet and a leading edge of a succeeding sheet have a partial overlap therebetween; a storing section for storing the sheet in an upright position after the sheet being held by the conveyance device is released at a holding lower end position of the conveyance device; and a controller for controlling the conveyance device to repeat a stop and an acceleration operation for each sheet such that the partial overlap is created and adjusted depending on an extent of an acceleration of the acceleration operation, wherein a distance from the storing section to the holding lower end position of the conveyance device is changeable, and wherein when a difference of a height between an upper edge of the sheet loaded in the upright position on the storing section and the holding lower end position is D 1 and when an overlapping length between the preceding sheet and the succeeding sheet is D 2 , the holding lower end position is set so as to satisfy a relationship D 1 ≦D 2 , and the distance is adjusted so that the preceding sheet has an overlapped portion with the succeeding sheet which is still held by the conveyance device even at a moment when the preceding sheet falls and lands on the storing section after being released at the holding lower end position.