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US 6,687,484 B2Granted
Sheet transporting apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorAtsuteru Oikawa
Life of this patent
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Abstract
A sheet transporting apparatus and an image forming apparatus, both achieving the prevention of any jam owing to a sheet delivered by an aftertreatment apparatus, transport the sheet, which has straightly been transported or has been reversed and transported in a buffer unit, to a sorter as it is without performing any correcting operation by a correcting device when a group mode is selected, and the sheet transporting means and the image forming apparatus perform the curl correction of the sheet by executing correcting operation of the correcting device to remove the curl of the sheet when a mode other than the group mode is selected.
Claims16
A sheet transporting apparatus comprising:
- a transporting path for guiding sheets to an aftertreatment apparatus having a function of sorting and delivering the sheets to a plurality of bins;
- and
- correcting means for correcting a curl formed in a sheet transported through said transporting path,
- wherein, when the aftertreatment apparatus continuously delivers the sheets to a sort bin other than a non-sort bin at an uppermost position among the plurality of bins, said correcting means does not perform a correcting operation, or said correcting means performs the correcting operation while lowering a degree of correction than that at a time of delivering the sheets to the non-sort bin.
1 more element
A sheet transporting apparatus comprising:
- a transporting path for guiding sheets to an aftertreatment apparatus having a function of sorting and delivering the sheets to a plurality of bins;
- and
- correcting means for correcting a curl formed in a sheet transported through said transporting path,
- wherein, when a group mode for delivering the sheets continuously to a predetermined sort bin other than a non-sort bin at an uppermost position among the plurality of bins is selected, said correcting means does not perform a correction operation, or said correcting means performs the correcting operation while lowering a degree of correction than that at a time of delivering the sheets to the non-sort bin.
1 more element
A sheet transporting apparatus comprising:
- a transporting path for guiding sheets to an aftertreatment apparatus having a function of sorting and delivering the sheets to a plurality of bins;
- and
- correcting means for correcting a curl formed in a sheet transported through said transporting path,
- wherein, when a stack mode for delivering the sheets to a sort bin other than a non-sort bin at an uppermost position among the plurality of bins if a number of the sheets to be delivered exceeds a number of sheets stackable on the non-sort bin is selected, said correcting means does not perform a correcting operation, or said correcting means performs the correcting operation while lowering a degree of correction than that at a time of delivering the sheets to the non-sort bin.
1 more element
A sheet transporting apparatus comprising:
- a transporting path for guiding sheets to an aftertreatment apparatus that is provided with a stack tray for stacking the sheets thereon;
- and
- correcting means for correcting a curl formed in a sheet transported through said transporting path,
- wherein, when the aftertreatment apparatus continuously delivers the sheets to the stack tray, said correcting means does not perform a correcting operation, or said correcting means performs the correcting operation while lowering a degree of correction than that at a time of delivering the sheets intermittently.
1 more element
A sheet transporting apparatus comprising:
- a stack tray for stacking sheets thereon;
- a transporting path for guiding the sheets to said stack tray;
- and
- correcting means for correcting a curl formed in a sheet transported through said transporting path,
- wherein, when the sheets are continuously delivered to said stack tray, said correcting means does not perform a correcting operation, or said correcting means performs the correcting operation while lowering a degree of correction than that at a time of delivering the sheets intermittently.
2 more elements
A sheet transporting apparatus comprising:
- a tray for stacking sheets thereon;
- transporting means for transporting a sheet to said tray;
- correcting means for correcting a curl formed in the sheet transported by said transporting means;
- and
- controlling means for controlling said correcting means so that, when the sheets exceeding a predetermined number are continuously transported to said tray by said transporting means, said correcting means does not perform a correcting operation, or said correcting means performs the correcting operation while lowering a degree of correction than that in a case where the sheets less than the predetermined number are continuously transported.
2 more elements
An image forming apparatus comprising:
- image forming means for forming an image on a sheet;
- stacking means for stacking the sheet;
- transporting means for transporting the sheet, on which said image forming means has formed the image, to said stacking means;
- correcting means for correcting a curl of the sheet transported by said transporting means;
- inputting means by which a processing instruction to said image forming apparatus is inputted;
- and
- controlling means for controlling a correcting ability of said correcting means according to the processing instruction inputted by said inputting means,
- wherein the processing instruction inputted by said inputting means is an instruction concerning a number of the sheets on which the images are to be formed continuously, and said controlling means controls said correcting means not to perform a correcting operation when the inputted number of the sheets is a predetermined number of the sheets or more, or to perform the correcting operation while lowering a degree of correction than that when sheets of a number less than the predetermined number are continuously delivered.
5 more elements
Dependencies are inferred from the claim text.