Sheet supplying apparatus with weight detection feature
AssigneeCanon Kabushiki Kaisha
InventorMasahiko Yokota
Life of this patent
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Abstract
A sheet supplying apparatus includes a stacker on which a plurality of sheets can be stacked as a sheet stack, a supply system for supplying the sheet on the stacker, and an adjusting system for adjusting a supplying force of the supply system in response to a shifted amount of the stacker. The stacker may be shifted dependent on a weight of the sheet stack, but independent of the thickness of the sheet stacker. Alternatively, the stacker may be shiftable in a stacking direction in response to sheet size and weight. The adjusting system may adjust the supplying force irrespective of the size of the sheets.
Claims41
A sheet supplying apparatus comprising:
- a stacking means on which a plurality of sheets can be stacked as a sheet stack, at least a portion of said stacking means being shiftable in a stacking direction in accordance with the weight of the sheet stack;
- a supply means for supplying the sheets to be stacked on said stacking means;
- and
- an adjusting means for adjusting a supplying force of said supply means in response to a shifted amount of said stacking means, irrespective of a size of the sheets.
A sheet reading apparatus comprising:
- a stacking means on which a plurality of sheets can be stacked as a sheet stack;
- a supply means for supplying the sheets to be stacked on said stacking means;
- a sensor means for detecting a weight of the sheet stack on said stacking means;
- an adjusting means for adjusting a supplying force of said supply means in accordance with the weight of the sheet stack, irrespective of a size of the sheets;
- and
- a reading means for reading the supplied sheet.
A facsimile apparatus comprising:
- a stacking means on which a plurality of sheets can be stacked as a sheet stack;
- a supply means for supplying the sheet on said stacking means;
- a sensor means for detecting a weight of the sheet stack on said stacking means;
- an adjusting means for adjusting a supplying force of said supply means in accordance with the weight of the sheet stack, irrespective of a size of the sheet;
- a reading means for reading the supplied sheet;
- and
- a transmission means for transmitting information on the sheet read by said reading means.
A sheet supplying apparatus comprising:
- a stacking means on which a plurality of sheets can be stacked as a sheet stack, at least a portion of said stacking means being shiftable in a stacking direction, dependent on a weight of the sheet stack, but independent of the thickness of the sheet stack;
- a supply means for supplying the sheets to be stacked onto said stacking means;
- and
- an adjusting means for adjusting a supplying force of said supply means in response to a shifted amount of said stacking means.
A sheet supplying apparatus comprising:
- a stacking means on which a plurality of sheets can be stacked as a sheet stack, at least a portion of said stacking means being shiftable in a stacking direction, in response to a sheet size and a sheet stack weight;
- a supply means for supplying a sheet to be stacked on said stacking means;
- and
- an adjusting means for adjusting a supplying force of said supplying means in response to a shifted amount of said stacking means.
A sheet reading apparatus comprising:
- a stacking means on which a plurality of sheets can be stacked as a sheet stack, at least a portion of said stacking means being shiftable in a stacking direction in accordance with the weight of the sheet stack;
- a supply means for supplying the sheets to be stacked on said stacking means;
- adjusting means for adjusting a supplying force of said supply means in response to a shifted amount of said stacking means, irrespective of a size of the sheets, and
- a reading means for reading the supplied sheet.
A facsimile apparatus comprising:
- a stacking means on which a plurality of sheets can be stacked as a sheet stack, at least a portion of said stacking means being shiftable in a stacking direction in accordance with the weight of the sheet stack;
- a supply means for supplying the sheets to be stacked on said stacking means;
- an adjusting means for adjusting a supplying force of said supply means in response to a shifted amount of said stacking means, irrespective of a size of the sheets;
- a reading means for the supplied sheet;
- and
- a transmission means for transmitting information read by said reading means.
Dependencies are inferred from the claim text.