Sheet stacking device and method of stacking sheets
AssigneeOce-Technologies B.V.
InventorsStan H.L.A. RUTTEN, Johannes H.A. DINNISSEN, Robertus P.C. QUIRIJNEN
Life of this patent
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Abstract
A sheet stacking device and method of stacking sheets, wherein a first pressing member engages with an edge of a new sheet to be deposited on top of a previously deposited sheet on a sheet receiving plane and presses down the edge, while a second pressing member maintains a pressure onto an edge of the previously deposited sheet. The second pressing member engages with the edge of the new sheet and presses down the edge onto the previously deposited sheet on the receiving plane, while the first pressing member maintains a pressure onto the edge of the new sheet. Thus, the sheets may always be pressed down on the edge by at least one of the first and second pressing members.
Claims13
A sheet stacking device, comprising:
- a sheet receiving plane for supporting stacked sheets;
- a sheet depositing member for depositing sheets onto the sheet receiving plane;
- and
- at least one first pressing member and at least one second pressing member, each arranged for releasing an edge of a previously deposited sheet and pressing down an edge of a new sheet onto said previously deposited sheet above the receiving plane,
- wherein the at least one second pressing member is adapted to release a sheet and to engage with a new sheet with a time delay with respect to the at least one first pressing member such that:
- the at least one first pressing member releases said edge of a previously deposited sheet while the at least one second pressing member presses down said edge, and
- the at least one second pressing member releases said edge of a previously deposited sheet while the at least one first pressing member presses down said edge of a new sheet onto said previously deposited sheet, and
- wherein the at least one second pressing member is adapted to be retracted from a sheet engaging position in a direction towards a stop member for aligning said edge of said previously deposited sheet.
A method of stacking sheets on a sheet receiving plane, comprising the steps of:
- receiving at least an edge of a new sheet on top of a previously deposited sheet on the sheet receiving plane;
- engaging with said edge of said new sheet and pressing down said edge onto the previously deposited sheet on the receiving plane by at least one first pressing member, while at least one second pressing member maintains a pressure onto an edge of the previously deposited sheet;
- retracting the at least one second pressing member from a sheet engaging position in a direction towards a stop member and engaging with said edge of said new sheet and pressing down said edge onto the previously deposited sheet on the receiving plane by the at least one second pressing member, while the at least one first pressing member maintains a pressure onto said edge of the new sheet;
- and
- depositing the new sheet on top of the previously deposited sheet.
Dependencies are inferred from the claim text.