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US 11,440,756 B2Granted
Sheet feeding apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorSatoshi Tsuda
Life of this patent
Estimating the term…
Abstract
A conveyance rotating body is rotatably supported by a support member. A second rotational axis at a rotation center of a driven transmission member is disposed at a position different from a position of a first rotational axis. When a feeding unit is attached to a sheet feeding apparatus, a drive transmission member and the driven transmission member engage with each other. When a driving force is transmitted from the drive transmission member to the driven transmission member, the feeding unit receives a force in an attachment direction of the feeding unit and is positioned with respect to the sheet feeding apparatus.
Claims14
A sheet feeding apparatus for feeding a sheet, comprising:
- a storage unit, having a stacking member, configured to store sheets stacked on the stacking member;
- a feeding unit, attachable to and detachable from a support unit disposed in the sheet feeding apparatus, configured to feed the sheets stacked on the stacking member;
- a separation unit configured to separate one by one the sheets fed by the feeding unit;
- and
- a drive transmission member configured to rotate about a first rotational axis,
- wherein the feeding unit includes
- a driven transmission member configured to engage with the drive transmission member to receive a driving force from the drive transmission member in a state where the feeding unit is attached to the sheet feeding apparatus,
- a conveyance rotating body configured to convey a sheet, the conveyance rotating body rotating by the driven transmission member receiving the driving force and rotating, and
- a holding member configured to hold the driven transmission member and the conveyance rotating body, the holding member including a guided portion for movement of the feeding unit with respect to a guide portion on the support unit,
- wherein the conveyance rotating body is rotatably supported by the holding member, and a second rotational axis at a rotation center of the driven transmission member is disposed at a position different from a position of the first rotational axis,
- wherein the support unit has a positioning portion for positioning the feeding unit,
- wherein, when the feeding unit is attached to the sheet feeding apparatus, the drive transmission member engages with the driven transmission member, and
- wherein when the driving force is transmitted from the drive transmission member to the driven transmission member, the guided portion is positioned by the positioning portion upon contact with the positioning portion using a force in an attachment direction of the feeding unit.
10 more elements
An image forming apparatus comprising:
- a storage unit, having a stacking member, configured to store sheets stacked on the stacking member;
- a feeding unit, attachable to and detachable from a support unit disposed in the image forming apparatus, configured to feed the sheets stacked on the stacking member;
- a separation unit configured to separate one by one the sheets fed by the feeding unit;
- a drive transmission member configured to rotate about a first rotational axis;
- and
- an image forming unit configured to form an image on the sheet separated by the separation unit,
- wherein the feeding unit includes a driven transmission member configured to engage with the drive transmission member to receive a driving force from the drive transmission member in a state where the feeding unit is attached to the image forming apparatus, a conveyance rotating body configured to convey a sheet, the conveyance rotating body rotating by the driven transmission member receiving the driving force and rotating, and a holding member configured to support the driven transmission member and the conveyance rotating body,
- wherein the holding member includes a guided portion for movement of the feeding unit with respect to a guide portion on the support unit,
- wherein the conveyance rotating body is rotatably supported by the holding member, and a second rotational axis at a rotation center of the driven transmission member is disposed at a position different from a position of the first rotational axis,
- wherein the support unit has a positioning portion for positioning the feeding unit,
- wherein, when the feeding unit is attached to the image forming apparatus, the drive transmission member engages with the driven transmission member, and
- wherein when the driving force is transmitted from the drive transmission member to the driven transmission member, the guided portion is positioned by the positioning portion upon contact with the positioning portion using a force in an attachment direction of the feeding unit.
9 more elements
Dependencies are inferred from the claim text.