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US 12,517,455 B2Granted
Sheet conveyance apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorSo Matsumoto
Life of this patent
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Abstract
A sheet conveyance apparatus includes a rotary member pair, a movement portion, a detection portion, an abutment member, an oblique conveyance portion, and a controller configured to, on a basis of a detection result of the detection portion, move the rotary member pair in a width direction by the movement portion such that a position, in the width direction, of the downstream end of the sheet is a set position in a state in which the rotary member pair is nipping the sheet and before the sheet reaches the oblique conveyance portion. The controller is configured to execute, after the sheet has reached the oblique conveyance portion, a correction mode of correcting the set position on a basis of the position of the downstream end, abutting the abutment surface, detected by the detection portion.
Claims15
A sheet conveyance apparatus comprising:
- a rotary member pair configured to nip and convey a sheet in a sheet conveyance direction;
- a movement mechanism configured to move the rotary member pair in a width direction orthogonal to the sheet conveyance direction, the width direction including a first direction from a first side toward a second side in the width direction and a second direction opposite to the first direction;
- a detection sensor configured to detect a position of a downstream end, in the first direction, of the sheet;
- an abutment member disposed downstream of the rotary member pair in the sheet conveyance direction, the abutment member including an abutment surface configured to extend along the sheet conveyance direction;
- an oblique conveyance portion disposed downstream of the rotary member pair in the sheet conveyance direction and configured to obliquely convey the sheet in an inclination direction inclined with respect to the sheet conveyance direction so that the sheet approaches the abutment surface in the first direction;
- and
- a controller configured to, on a basis of a detection result of the detection sensor, move the rotary member pair in the width direction by the movement mechanism such that a position, in the width direction, of the downstream end of the sheet is a set position in a state in which the rotary member pair is nipping the sheet and before the sheet reaches the oblique conveyance portion, the set position being a position in the detection sensor away from the abutment surface by a predetermined distance in the second direction,
- wherein the controller is configured to execute, after the sheet has reached the oblique conveyance portion, a mode of determining the set position on a basis of the position of the downstream end, abutting the abutment surface, detected by the detection sensor.
5 more elements
An image forming apparatus comprising:
- a sheet conveyance apparatus including:
- a rotary member pair configured to nip and convey a sheet in a sheet conveyance direction;
- a movement mechanism configured to move the rotary member pair in a width direction orthogonal to the sheet conveyance direction, the width direction including a first direction from a first side toward a second side in the width direction and a second direction opposite to the first direction;
- a detection sensor configured to detect a position of a downstream end, in the first direction, of the sheet;
- an abutment member disposed downstream of the rotary member pair in the sheet conveyance direction, the abutment member including an abutment surface configured to extend along the sheet conveyance direction;
- an oblique conveyance portion disposed downstream of the rotary member pair in the sheet conveyance direction and configured to obliquely convey the sheet in an inclination direction inclined with respect to the sheet conveyance direction so that the sheet approaches the abutment surface in the first direction;
- and
- a controller configured to, on a basis of a detection result of the detection sensor, move the rotary member pair in the width direction by the movement mechanism such that a position, in the width direction, of the downstream end of the sheet is a set position in a state in which the rotary member pair is nipping the sheet and before the sheet reaches the oblique conveyance portion, the set position being a position in the detection sensor away from the abutment surface by a predetermined distance in the second direction,
- wherein the controller is configured to execute, after the sheet has reached the oblique conveyance portion, a mode of determining the set position on a basis of the position of the downstream end, abutting the abutment surface,
- detected by the detection sensor;
- and
- an image forming portion configured to form an image on a sheet conveyed by the sheet conveyance apparatus.
9 more elements
A sheet conveyance apparatus comprising:
- a conveying roller pair configured to nip and convey a sheet in a sheet conveyance direction;
- a movement mechanism configured to move the conveying roller pair in a width direction orthogonal to the sheet conveyance direction;
- a detection sensor configured to detect a side-edge portion of the sheet;
- an abutment member disposed downstream of the conveying roller pair in the sheet conveyance direction, the abutment member including an abutment surface configured to extend along the sheet conveyance direction;
- an oblique conveyance portion disposed downstream of the conveying roller pair in the sheet conveyance direction and configured to obliquely convey the sheet in an inclination direction inclined with respect to the sheet conveyance direction so that the sheet approaches the abutment surface in a width direction;
- and
- a controller configured to move the conveying roller pair by the movement mechanism to move the sheet to a predetermined position in the width direction on a basis of a detection result of the detecting sensor before the sheet is obliquely conveyed by the obliquely conveyance portion,
- wherein a first position and a second position are on the detection sensor, the first position being a position of the side-edge portion of the sheet moved in the predetermined position, and the second position being a position of the side-edge portion of the sheet detected by the detection sensor in a state where the side-edge portion of the sheet has been abutted against the abutment surface, and
- wherein the controller is configured to determine the first position on a basis of the second position.
6 more elements
Dependencies are inferred from the claim text.