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US 9,272,857 B2Granted
Sheet stacking apparatus, sheet feeding apparatus, and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTomohito Nakagawa, Hideki Kushida
Life of this patent
Estimating the term…
Abstract
A sheet stacking apparatus includes a base member, a sheet stacking portion on which sheets are stacked, and a biasing portion configured to bias the sheet stacking portion. The sheet stacking portion is swingably supported by the base member, and the biasing portion biases the sheet stacking portion such that a swing angle is reduced.
Claims12
A sheet stacking apparatus for supporting stacked sheets within a sheet storage portion, the sheet stacking apparatus comprising:
- a base member;
- a sheet stacking portion on which sheets are stacked, the sheet stacking portion being supported by the base member such that both end portions of the sheet stacking portion swing up and down about a swinging center;
- a first biasing member biasing one end portion of the sheet stacking portion against the swinging center;
- and
- a second biasing member biasing another end portion of the sheet stacking portion against the swinging center,
- wherein both end portions of the sheet stacking portion are held at substantially the same level by the first and second biasing members.
3 more elements
A sheet feeding apparatus comprising:
- a sheet stacking apparatus including:
- a base member;
- a sheet stacking portion on which sheets are stacked, the sheet stacking portion being supported by the base member such that both end portions of the sheet stacking portion swing up and down about a swinging center;
- a first biasing member biasing one end portion of the sheet stacking portion against the swinging center;
- and
- a second biasing member biasing another end portion of the sheet stacking portion against the swinging center;
- a sheet storage portion including a sheet storage portion body configured to store sheets, and a supporting portion which is provided on the sheet storage portion body so as to be capable of elevating, and on which the base member of the sheet stacking apparatus is placed;
- and
- a sheet feed portion provided above the supporting portion and configured to feed the sheet in abutment with the topmost sheet from among the sheets stacked on the sheet stacking portion,
- wherein both end portions of the sheet stacking portion are held at substantially the same level by the first and second biasing members, and
- wherein the axial direction of the swinging center corresponds to a sheet feeding direction.
8 more elements
An image forming apparatus comprising:
- a feeding apparatus including:
- a sheet stacking apparatus including:
- a base member;
- a sheet stacking portion on which sheets are stacked, the sheet stacking portion being supported by the base member such that both end portions of the sheet stacking portion swing up and down about a swinging center;
- a first biasing member biasing one end portion of the sheet stacking portion against the swinging center;
- and
- a second biasing member biasing another end portion of the sheet stacking portion against the swinging center;
- a sheet storage portion including a sheet storage portion body configured to store sheets, and a supporting portion which is provided on the sheet storage portion body so as to be capable of elevating, and on which the base member of the sheet stacking apparatus is placed;
- and
- a sheet feed portion provided above the supporting portion and configured to feed the sheet in abutment with the topmost sheet from among the sheets stacked on the sheet stacking portion;
- and
- an image forming portion configured to form an image on a sheet fed by the sheet feeding apparatus,
- wherein both end portions of the sheet stacking portion are held at substantially the same level by the first and second biasing members, and
- wherein the axial direction of the swinging center corresponds to a sheet feeding direction.
11 more elements
Dependencies are inferred from the claim text.