Holtz, Holtz, Goodman & Chick PC
Paper sheet stacking apparatus, image forming apparatus, paper sheet processing apparatus, image forming system and method for controlling paper sheet stacking operation
A paper sheet stacking apparatus includes: a stacking tray on which paper sheets are stacked; a driving section to drive the stacking tray in up and down directions corresponding to a height of the paper sheets stacked; a paper-sheet upper surface detecting section to detect an upper-most surface of the paper sheets to be stacked onto the stacking tray; a position detecting section to detect a position of the stacking tray by using a plurality of sensors respectively disposed at different positions arranged in a vertical direction, along which the stacking tray moves up and down; and a control section that determines whether or not the stacking tray is currently in a full loaded condition, based on the position of the stacking tray. By employing the information in regard to the weight and the thickness of each of the paper sheets, the control section selects any one of the sensors, provided in the position detecting section, as a full-loaded condition position sensor, and determines whether or not the stacking tray is currently in the full loaded condition, by using the full-loaded condition position sensor concerned.
KONICA MINOLTA, INC.
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Norishige
Kato