Sheet conveyance apparatus, image reading apparatus, and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorTakayuki Fukushima
Life of this patent
Estimating the term…
Abstract
A sheet conveyance apparatus includes a support unit including a guide surface, a roller unit including a roller member and a roller shaft supporting the roller member, a drive shaft provided in the support unit, a coupling configured to connect the drive shaft and the roller shaft, and a motor configured to supply a drive force to the roller shaft via the drive shaft and the coupling. A rib is disposed on an outer surface of the coupling. When the coupling is viewed from the conveyance path, the rib is inclined with respect to the sheet conveyance direction such that the rib becomes more distant from the roller member in a sheet width direction perpendicular to the sheet conveyance direction as the rib extends downstream in the sheet conveyance direction.
Claims19
A sheet conveyance apparatus comprising:
- a support unit including a guide surface configured to form a conveyance path through which a sheet passes;
- a roller unit including a roller member configured to convey the sheet in a sheet conveyance direction through the conveyance path and a roller shaft supporting the roller member, the roller unit being supported by the support unit in a detachable manner;
- a drive shaft provided in the support unit;
- a coupling configured to connect the drive shaft and the roller shaft;
- and
- a motor configured to supply a drive force to the roller shaft via the drive shaft and the coupling,
- wherein at least part of the coupling is exposed to the conveyance path,
- wherein a rib is disposed on an outer surface of the coupling, and
- wherein, when the coupling is viewed from the conveyance path, the rib is inclined with respect to the sheet conveyance direction such that the rib becomes more distant from the roller member in a sheet width direction perpendicular to the sheet conveyance direction as the rib extends downstream in the sheet conveyance direction.
An image reading apparatus comprising:
- a support unit including a guide surface configured to form a conveyance path through which a sheet passes;
- a roller unit including a roller member configured to convey the sheet in a sheet conveyance direction through the conveyance path and a roller shaft supporting the roller member, the roller unit being supported by the support unit in a detachable manner;
- a drive shaft provided in the support unit;
- a coupling configured to connect the drive shaft and the roller shaft;
- a motor configured to supply a drive force to the roller shaft via the drive shaft and the coupling;
- and
- a read sensor configured to read an image of the sheet conveyed by the roller member,
- wherein at least part of the coupling is exposed to the conveyance path,
- wherein a rib is disposed on an outer surface of the coupling, and
- wherein, when the coupling is viewed from the conveyance path, the rib is inclined with respect to the sheet conveyance direction such that the rib becomes more distant from the roller member in a sheet width direction perpendicular to the sheet conveyance direction as the rib extends downstream in the sheet conveyance direction.
An image forming apparatus comprising:
- a support unit including a guide surface configured to form a conveyance path through which a sheet passes;
- a roller unit including a roller member configured to convey the sheet in a sheet conveyance direction through the conveyance path and a roller shaft supporting the roller member, the roller unit being supported by the support unit in a detachable manner;
- a drive shaft provided in the support unit;
- a coupling configured to connect the drive shaft and the roller shaft;
- a motor configured to supply a drive force to the roller shaft via the drive shaft and the coupling;
- a read sensor configured to read an image of the sheet conveyed by the roller member;
- and
- an image forming unit configured to form an image on a recording material based on image information acquired by the read sensor,
- wherein at least part of the coupling is exposed to the conveyance path,
- wherein a rib is disposed on an outer surface of the coupling, and
- wherein, when the coupling is viewed from the conveyance path, the rib is inclined with respect to the sheet conveyance direction such that the rib becomes more distant from the roller member in a sheet width direction perpendicular to the sheet conveyance direction as the rib extends downstream in the sheet conveyance direction.
Dependencies are inferred from the claim text.