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US 2026/0028199 A1Published application
Sheet conveyance apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorKENTA MIYAMOTO
Life of this patent
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Abstract
A sheet conveyance apparatus includes a first roller pair, a second roller pair, a third roller pair, and a control unit configured to execute a first mode in which skew correction of the sheet is performed by abutting a leading edge of the sheet against the second roller pair in a stopped state, and then the sheet is passed through the third roller pair without abutting the leading edge of the sheet against the third roller pair in a stopped state, and a second mode in which the leading edge of the sheet is passed through the second roller pair without abutting against the second roller pair in the stopped state, and then skew correction of the sheet is performed by abutting the leading edge of the sheet against the third roller pair in the stopped state.
Claims11
A sheet conveyance apparatus comprising:
- a first roller pair configured to convey a sheet;
- a second roller pair arranged downstream of the first roller pair in a conveyance path of the sheet and configured to convey the sheet;
- a third roller pair arranged downstream of the second roller pair in the conveyance path and configured to convey the sheet;
- and
- a control unit,
- wherein, in a case where a movement direction of the sheet at a nip portion of the first roller pair is referred to as a first direction, a movement direction of the sheet at a nip portion of the second roller pair is referred to as a second direction, and a movement direction of the sheet at a nip portion of the third roller pair is referred to as a third direction, an angle between the first direction and the second direction is larger than an angle between the second direction and the third direction,
- wherein the control unit is configured to execute a first mode in a case of conveying the sheet having a first grammage and to execute a second mode in a case of conveying the sheet having a second grammage that is less than the first grammage,
- wherein the first mode is a mode in which skew correction of the sheet is performed by abutting a leading edge of the sheet against the second roller pair in a stopped state, and then the sheet is passed through the third roller pair without abutting the leading edge of the sheet against the third roller pair in a stopped state, and
- wherein the second mode is a mode in which the leading edge of the sheet is passed through the second roller pair without abutting against the second roller pair in the stopped state, and then skew correction of the sheet is performed by abutting the leading edge of the sheet against the third roller pair in the stopped state.
6 more elements
A sheet conveyance apparatus comprising:
- a first roller pair configured to convey a sheet;
- a second roller pair arranged downstream of the first roller pair in a conveyance path of the sheet and configured to convey the sheet;
- a third roller pair arranged downstream of the second roller pair in the conveyance path and configured to convey the sheet;
- and
- a control unit,
- wherein, in a case where a movement direction of the sheet at a nip portion of the first roller pair is referred to as a first direction, a movement direction of the sheet at a nip portion of the second roller pair is referred to as a second direction, and a movement direction of the sheet at a nip portion of the third roller pair is referred to as a third direction, an angle between the first direction and the second direction is smaller than an angle between the second direction and the third direction,
- wherein the control unit is configured to execute a first mode in a case of conveying the sheet having a first grammage, and is configured to execute a second mode in a case of conveying the sheet having a second grammage that is less than the first grammage,
- wherein the first mode is a mode in which a leading edge of the sheet is passed through the second roller pair without abutting against the second roller pair in a stopped state, and then skew correction of the sheet is performed by abutting the leading edge of the sheet against the third roller pair in a stopped state, and
- wherein the second mode is a mode in which skew correction of the sheet is performed by abutting the leading edge of the sheet against the second roller pair in the stopped state, and then the sheet is passed through the third roller pair without abutting the leading edge of the sheet against the third roller pair in the stopped state.
6 more elements
A sheet conveyance apparatus comprising:
- a first roller pair configured to convey a sheet;
- a second roller pair arranged downstream of the first roller pair in a conveyance path of the sheet and configured to convey the sheet;
- a third roller pair arranged downstream of the second roller pair in the conveyance path and configured to convey the sheet;
- and
- a control unit,
- wherein, in a case where a movement direction of the sheet at a nip portion of the first roller pair is referred to as a first direction, a movement direction of the sheet at a nip portion of the second roller pair is referred to as a second direction, and a movement direction of the sheet at a nip portion of the third roller pair is referred to as a third direction, an angle between the first direction and the second direction is larger than an angle between the second direction and the third direction,
- wherein the control unit is configured to execute a first mode in a case of conveying a first sheet, and is configured to execute a second mode in a case of conveying a second sheet having a lower stiffness than the first sheet,
- wherein the first mode is a mode in which skew correction of the sheet is performed by abutting a leading edge of the sheet against the second roller pair in a stopped state, and then the sheet is passed through the third roller pair without abutting the leading edge of the sheet against the third roller pair in a stopped state, and
- wherein the second mode is a mode in which the leading edge of the sheet is passed through the second roller pair without abutting against the second roller pair in the stopped state, and then skew correction of the sheet is performed by abutting the leading edge of the sheet against the third roller pair in the stopped state.
6 more elements
Dependencies are inferred from the claim text.