Patent ID: 9630794
Date: 2017-04-25
CPC Classifications: B41J,B65H

Claim:
1. A sheet stacking device comprising: a sheet discharge platform where sheets, which have been subjected to heating and drying processing after images are formed using ink liquid, are conveyed and stacked; a blowing mechanism that includes a nozzle having an opening, a whole surface of the opening being positioned so as to face a portion on a side surface of a sheet bundle stacked on the sheet discharge platform below an upper portion of the sheet bundle by a distance corresponding to a predetermined number of sheets, and the nozzle blowing air to the side surface of the sheet bundle via the opening; a height adjustment mechanism that changes the position of the sheet discharge platform relative to the nozzle in a vertical direction according to a height of the sheet bundle; a height detecting device that detects the height of the sheet bundle stacked on the sheet discharge platform; and a control device that controls the height adjustment mechanism according to the height of the sheet bundle detected by the height detecting device; wherein the sheet discharge platform is fixed and the height adjustment mechanism raises the nozzle according to an increase in the height of the sheet bundle.