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US 6,179,287 B2Granted
Sheet stacking apparatus with stacking and retaining tray
AssigneesCanon Kabushiki Kaisha, Canon Aptex Inc.
InventorsTomoyuki Watanabe, Hiroaki Namiki
Life of this patent
Estimating the term…
Abstract
A sheet stacking apparatus includes a sheet discharging device for discharging sheets; a stacking tray for stacking sets of the sheets discharged by the sheet discharging device; a retaining tray for retaining one sheet discharging by the discharging device; a shifting device for shifting, in a direction crossing with a direction of the discharging of the sheet, the one sheet on the retaining tray; a feeding device for feeding the one sheet to the stacking tray; whereby the sets of the sheets are grouped with the sheet shifted by the shifting device.
Claims31
A sheet stacking apparatus comprising:
- sheet discharging means for discharging sheets;
- a stacking tray for stacking the sheets;
- a retaining tray for retaining one sheet discharging by said discharging means;
- shifting means for shifting, in a direction crossing with a direction of the discharging of the sheets, so as to be projected beyond the sheets stacked on said stacking tray, the one sheet on said retaining tray;
- and
- feeding means for feeding the one sheet to said stacking tray;
- whereby the stacked sheets are grouped with the sheet shifted by said shifting means by alternately repeating stacking of sheets and shifting and feeding of one sheet.
4 more elements
A sheet stacking apparatus comprising:
- sheet discharging means for discharging sheets;
- a first tray for stacking the sheets discharged by said discharging means;
- aligning means for moving the sheets supported on said first tray in a direction crossing with a direction of discharging of the sheets, to align the sheets;
- first driving means for driving said aligning means;
- a first sheet regulating member for regulating the sheets moved in the direction crossing with the discharging direction by said aligning means;
- second driving means for retracting said first sheet regulating member from said first tray;
- a second sheet regulating member disposed more remote from said aligning means than said first sheet regulating member and for regulating the sheets in the direction crossing with the discharging direction by said aligning means;
- and
- moving means for moving the sheets supported on said first tray to a second tray adjacent the first tray.
6 more elements
A sheet stacking apparatus comprising:
- sheet discharging means for discharging sheets;
- a first tray for stacking the sheets discharged by said discharging means;
- aligning means for moving the sheets supported on said first tray in a direction crossing with a direction of discharging of the sheets, to align the sheets;
- first driving means for driving said aligning means;
- a first sheet regulating member for regulating the sheets moved in the direction crossing with the discharging direction by said aligning means;
- second driving means for retracting said first sheet regulating member from said first tray;
- a second sheet regulating member disposed more remote from said aligning means than said first sheet regulating member and for regulating the sheets in the direction crossing with the discharging direction by said aligning means;
- moving means for moving the sheets supported on said first tray to a second tray adjacent said first tray;
- and
- control means for controlling said second driving means to retract said first sheet regulating member and for controlling said first driving means to align a first sheet of a set of the sheets by abutting it to said second sheet regulating member.
7 more elements
A sheet stacking apparatus comprising:
- sheet discharging means for discharging sheets;
- a first tray for stacking the sheets discharged by said discharging means;
- aligning means for moving the sheets supported on said first tray in a direction crossing with a direction of discharging of the sheets, to align the sheets;
- first driving means for driving said aligning means;
- a first sheet regulating member for regulating the sheets moved in the direction crossing with the discharging direction by said aligning means;
- second driving means for retracting said first sheet regulating member from said first tray;
- a second sheet regulating member disposed more remote from said aligning means than said first sheet regulating member and for regulating the sheets in the direction crossing with the discharging direction by said aligning means;
- moving means for moving the sheets supported on said first tray to a second tray adjacent said first tray;
- and
- control means for controlling said second driving means to retract said first sheet regulating member and for controlling said first driving means to align a last one sheet of the set of the sheets by abutting it to said second sheet regulating member.
7 more elements
A sheet stacking apparatus comprising:
- sheet discharging means for discharging sheets;
- an alignment tray for stacking the sheets discharged by said discharging means in an aligned state;
- aligning means for aligning the sheets on said alignment tray by moving them in a direction crossing with a sheet discharging direction;
- a sheet regulating member disposed opposed to said aligning means;
- and
- a stacking tray for receiving the sheets on said alignment tray;
- wherein said sheet regulating member is movable between a first position for receiving the sheets moved by said aligning means and a second position retracted from said first position to increase a movement distance through which the sheets are moved from said first position in the direction crossing with said discharging direction;
- and
- wherein said alignment tray is provided with a sheet regulation fixed member at a position spaced from said sheet regulating member in the aligning direction away from said aligning means by a predetermined amount.
6 more elements
A sheet stacking apparatus comprising:
- sheet discharging means;
- shifting means for shifting a sheet in a direction crossing with a sheet discharging direction on a stacking tray;
- and
- control means for controlling said shifting means to cause a first or last sheet of a set of sheets discharged by said sheet discharging means to be stacked on said stacking tray with a shifted state, whereby a plurality of sets of sheets are grouped by the shifted sheet, wherein said tray includes first and second trays, and n−1 sheet of a set of n sheets are stacked on the first tray, and then, are fed as a set of sheets to the second tray, and a rested one sheet of the set of n sheets is stacked on the first tray, and then, is subjected to a shifting operation of said shifting means, and then, is fed to the second tray, wherein a degree of shift is enough to project the one sheet for grouping.
1 more element
Dependencies are inferred from the claim text.