Sheet feeding device and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorHisashi Kataoka
Life of this patent
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Abstract
A sheet feeding cassette includes a sheet stacking portion provided turnably in a vertical direction within a cassette body. The sheet feeding cassette also includes first and second side edge restricting portions configured to restrict widthwise positions of the sheets. The second side edge restricting portion includes first and second pressing portions configured to press the sheets on the sheet stacking portion against the first side edge restricting portion. The second pressing portion provided upstream in the sheet feeding direction of the first pressing portion is moved up and down by an interlock mechanism in linkage with a total thickness of the sheets on the sheet stacking portion.
Claims13
A sheet feeding device comprising:
- a sheet feed cassette;
- and
- a sheet feeding portion configured to sequentially feed sheets stored in the sheet feed cassette;
- the sheet feed cassette including:
- a cassette body;
- a sheet stacking portion provided in the cassette body turnably in a vertical direction and pressing the stacked sheets against the sheet feeding portion;
- a first side edge restricting portion provided in the cassette body;
- a second side edge restricting portion disposed to face the first side edge restricting portion and restricting a position of the sheets in a width direction together with the first side edge restricting portion;
- a first pressing portion provided projectively in the width direction from the second side edge restricting portion, formed such that a vertical width thereof is shorter than a maximum thickness of a sheet bundle that can be stored in the cassette body, and configured to press an uppermost sheet of the stacked sheets against the first side edge restricting portion;
- a second pressing portion provided projectively in the width direction from the second side edge restricting portion upstream in a sheet feeding direction of the first pressing portion, formed such that a vertical width thereof is shorter than the maximum thickness of the sheet bundle that can be stored in the cassette body, and configured to press the uppermost sheet against the first side edge restricting portion;
- and
- an interlock mechanism configured to move the second pressing portion vertically in linkage with the sheet stacking portion such that the second pressing portion lowers along with an upward turn of the sheet stacking portion and lifts along with a downward turn of the sheet stacking portion.
Dependencies are inferred from the claim text.