| 摘要 |
<p>PURPOSE:To provide a sheet post-processing device capable of controlling to move a bin in the middle of containing a specified number of sheet materials in a stack mode to contain plural sheets in the same bin for the sheet materials having the same image for preventing a trouble in next discharge by buckling of the stacked sheets. CONSTITUTION:In a stack mode, while images are recorded on transfer sheets from the same document, in the case where a selection signal of a bin tray 1 is received by a sheet post-processing device from an image forming device for a specified number of times, the bin tray 1 at the lowest level in an upper stack group 1U is moved to the uppermost position in a lower side stack group 1D, with the bin tray 1 at the uppermost level of the lower stack group 1D moved to the lowest position of the upper stack group 1U. An interval between the bin tray 1 at the uppermost level of the lower stack group 1D and the bin tray 1 at the lowest of the upper stack group 1U is thus changed from a large size GB into a small size GV, thereby the transfer sheets having buckling are pressed to a back surface of the bin tray 1 to be rolled.</p> |
