Printing apparatus and decurling device
AssigneeCanon Kabushiki Kaisha
InventorsKenji Shigeno, Tetsuhiro Nitta, Masato Izumi, Ryosuke Sato
Life of this patent
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Abstract
With front face printing, the sheet fed from a sheet feeding unit is led into a nipped position between a first pinch roller and a decurling roller from a first direction, and is discharged by decurling force being applied thereto at the decurling roller. On the other hand, the sheet fed from a reverse unit is led into the nipped position from a second direction opposite to the first direction, and is discharged by decurling force being applied thereto at the decurling roller.
Claims18
An apparatus capable of duplex printing, comprising:
- a sheet feeding unit configured to hold and feed a sheet wound in a rolled state;
- a decurling unit configured to correct curling of the sheet fed from the sheet feeding unit;
- a print unit configured to print on the sheet passed through the decurling unit;
- and
- a reverse unit configured to reverse the sheet printed by the print unit;
- wherein the decurling unit includes
- a decurling roller,
- a first pinch roller, and a second and a third pinch rollers on both sides of the first pinch roller, which are each disposed around the decurling roller, and are capable of forming a nipped state with the decurling roller;
- and wherein the sheet fed from the sheet feeding unit is led into a nip position between the first pinch roller and the decurling roller from a first direction, and the sheet led from the first direction is nipped with the decurling roller in order of the first pinch roller, and the second pinch roller, and is fed to the print unit;
- and wherein the sheet fed from the reverse unit is led into a nip position between the first pinch roller and the decurling roller from a second direction opposite to the first direction, and the sheet led from the second direction is nipped with the decurling roller in order of the first pinch roller and the third pinch roller, and is fed to the print unit.
An apparatus configured to subject a sheet to processing, comprising:
- a first sheet feeding unit and a second sheet feeding unit, each of which holds a sheet wound in a rolled state;
- a sheet processing unit;
- and
- a decurling unit configured to decurl the sheet to be fed from one of the first sheet feeding unit and the second sheet feeding unit to feed out to the sheet processing unit;
- wherein the decurling unit includes
- a decurling roller;
- and
- a first pinch roller, and a second and a third pinch rollers on both sides of the first pinch roller, which are each disposed around the decurling roller, and are capable of forming a nipped state with the decurling roller.
- and wherein the sheet fed from the first sheet feeding unit is led into a nipped position between the first pinch roller and the decurling roller from a first direction, and is nipped with the decurling roller in order of the first pinch roller, and the second pinch roller, and is fed to the sheet processing unit;
- and wherein the sheet fed from the second sheet feeding unit is led into a nipped position between the first pinch roller and the decurling roller from a second direction opposite to the first direction, and is nipped with the decurling roller in order of the first pinch roller, and the third pinch roller, and is fed to the sheet processing unit.
A device configured to decurl the sheet to be fed from one of a first sheet feeding unit and a second sheet feeding unit, comprising:
- a decurling roller;
- and
- a first pinch roller, and a second and a third pinch roller on both sides of the first pinch roller, which are each disposed around the decurling roller, and are capable of forming a nipped state with the decurling roller.
- and wherein the sheet fed from the first sheet feeding unit is led into a nipped position between the first pinch roller and the decurling roller from a first direction, and is nipped with the decurling roller in order of the first pinch roller, and the second pinch roller, and is conveyed;
- and wherein the sheet fed from the second sheet feeding unit is led into a nipped position between the first pinch roller and the decurling roller from a second direction opposite to the first direction, and is nipped with the decurling roller in order of the first pinch roller, and the third pinch roller, and is conveyed.
Dependencies are inferred from the claim text.