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US 10,836,595 B2Granted
Rotary feeding member, sheet feeding apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorYoshinao Chiba
Life of this patent
Estimating the term…
Abstract
A rotary feeding member includes a plurality of first regions each including a plurality of first protruding portions and a plurality of first recessed portions, and a plurality of second regions each including a plurality of second protruding portions and a plurality of second recessed portions. The plurality of first regions and plurality of second regions are alternately arranged in a rotating direction of the rotary feeding member, and a ratio of a second depth of the second recessed portions to a first depth of the first recessed portions is 0.4 or greater and 0.8 or less.
Claims18
A rotary feeding member configured to feed a sheet by rotating in contact with the sheet, the rotary feeding member comprising:
- a plurality of first regions each including a plurality of first protruding portions and a plurality of first recessed portions, the plurality of first protruding portions being provided, on a cross-section perpendicular to a rotation axis direction of the rotary feeding member, at a plurality of positions in a rotating direction of the rotary feeding member;
- and
- a plurality of second regions each including a plurality of second protruding portions and a plurality of second recessed portions, the plurality of second protruding portions being provided, on the cross-section, at a plurality of positions in the rotating direction of the rotary feeding member,
- wherein the plurality of first protruding portions and the plurality of second protruding portions constitute an outer circumferential surface of the rotary feeding member to be in contact with the sheet,
- wherein the plurality of first recessed portions are each provided, on the cross-section, between any adjacent two of the plurality of first protruding portions in the rotating direction, the plurality of first recessed portions being recessed to a first depth with respect to the outer circumferential surface,
- wherein the plurality of second recessed portions are each provided, on the cross-section, between any adjacent two of the plurality of second protruding portions in the rotating direction, the plurality of second recessed portions being recessed to a second depth smaller than the first depth with respect to the outer circumferential surface,
- wherein on the cross-section, the plurality of first regions and the plurality of second regions are alternately arranged in the rotating direction, and
- wherein a ratio of the second depth to the first depth is 0.4 or greater and 0.8 or less.
5 more elements
A sheet feeding apparatus comprising:
- a sheet supporting portion configured to support a sheet;
- a rotary feeding member configured to feed the sheet in a sheet feeding direction by rotating in contact with the sheet supported on the sheet supporting portion;
- a sheet detector configured to detect the sheet at a position downstream of the rotary feeding member in the sheet feeding direction;
- and
- a controller configured to execute a notification operation of notifying of information about replacement of the rotary feeding member based on a detection result of the sheet detector,
- wherein the rotary feeding member comprises:
- a plurality of first regions each including a plurality of first protruding portions and a plurality of first recessed portions, the plurality of first protruding portions being provided, on a cross-section perpendicular to a rotation axis direction of the rotary feeding member, at a plurality of positions in a rotating direction of the rotary feeding member;
- and
- a plurality of second regions each including a plurality of second protruding portions and a plurality of second recessed portions, the plurality of second protruding portions being provided, on the cross-section, at a plurality of positions in the rotating direction of the rotary feeding member,
- wherein the plurality of first protruding portions and the plurality of second protruding portions constitute an outer circumferential surface of the rotary feeding member to be in contact with the sheet,
- wherein the plurality of first recessed portions are each provided, on the cross-section, between any adjacent two of the plurality of first protruding portions in the rotating direction, the plurality of first recessed portions being recessed to a first depth with respect to the outer circumferential surface,
- wherein the plurality of second recessed portions are each provided, on the cross-section, between any adjacent two of the plurality of second protruding portions in the rotating direction, the plurality of second recessed portions being recessed to a second depth smaller than the first depth with respect to the outer circumferential surface,
- wherein on the cross-section, the plurality of first regions and the plurality of second regions are alternately arranged in the rotating direction, and
- wherein a ratio of the second depth to the first depth is 0.4 or greater and 0.8 or less.
11 more elements
An image forming apparatus comprising:
- a rotary feeding member configured to feed a sheet by rotating in contact with the sheet;
- and
- an image forming unit configured to form an image on a sheet fed by the rotary feeding member;
- wherein the rotary feeding member comprises:
- a plurality of first regions each including a plurality of first protruding portions and a plurality of first recessed portions, the plurality of first protruding portions being provided, on a cross-section perpendicular to a rotation axis direction of the rotary feeding member, at a plurality of positions in a rotating direction of the rotary feeding member;
- and
- a plurality of second regions each including a plurality of second protruding portions and a plurality of second recessed portions, the plurality of second protruding portions being provided, on the cross-section, at a plurality of positions in the rotating direction of the rotary feeding member,
- wherein the plurality of first protruding portions and the plurality of second protruding portions constitute an outer circumferential surface of the rotary feeding member to be in contact with the sheet,
- wherein the plurality of first recessed portions are each provided, on the cross-section, between any adjacent two of the plurality of first protruding portions in the rotating direction, the plurality of first recessed portions being recessed to a first depth with respect to the outer circumferential surface,
- wherein the plurality of second recessed portions are each provided, on the cross-section, between any adjacent two of the plurality of second protruding portions in the rotating direction, the plurality of second recessed portions being recessed to a second depth smaller than the first depth with respect to the outer circumferential surface,
- wherein on the cross-section, the plurality of first regions and the plurality of second regions are alternately arranged in the rotating direction, and
- wherein a ratio of the second depth to the first depth is 0.4 or greater and 0.8 or less.
9 more elements
Dependencies are inferred from the claim text.