Sheet feeding device
First Claim
1. A sheet feeding device, comprising:
- a sheet feeding roller having an outer circumferential face which includes a generally flat portion and a curved portion;
a first pivotable member, movable between a first position and a second position in accordance with the rotation of the sheet feeding roller, the first pivotable member comprising a first contact face and an extended member extended from a free end portion of the first pivotable member toward a downstream side of a sheet feeding direction, wherein;
the first pivotable member is moved to the second position when a sheet medium is placed between the sheet feeding roller and the first pivotable member; and
the first pivotable member is returned to the first position when a trailing end of the sheet medium faces the flat portion of the sheet feeding roller while the extended member of the first pivotable member comes in contact with the sheet medium.
1 Assignment
0 Petitions
Accused Products
Abstract
A sheet feeding roller has an outer circumferential face which includes a generally flat portion and a curved portion. A first pivotable member is movable between a first position and a second position in accordance with the rotation of the sheet feeding roller. The first pivotable member has a first contact face and an extended member extended from a free end portion of the first pivotable member toward a downstream side of a sheet feeding direction. The first pivotable member is moved to the second position when a sheet medium is placed between the sheet feeding roller and the first pivotable member. The first pivotable member is returned to the first position when a trailing end of the sheet medium faces the flat portion of the sheet feeding roller while the extended member of the first pivotable member comes in contact with the sheet medium.
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Citations
17 Claims
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1. A sheet feeding device, comprising:
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a sheet feeding roller having an outer circumferential face which includes a generally flat portion and a curved portion;
a first pivotable member, movable between a first position and a second position in accordance with the rotation of the sheet feeding roller, the first pivotable member comprising a first contact face and an extended member extended from a free end portion of the first pivotable member toward a downstream side of a sheet feeding direction, wherein;
the first pivotable member is moved to the second position when a sheet medium is placed between the sheet feeding roller and the first pivotable member; and
the first pivotable member is returned to the first position when a trailing end of the sheet medium faces the flat portion of the sheet feeding roller while the extended member of the first pivotable member comes in contact with the sheet medium. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A sheet feeding device, comprising:
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an inlet section, adapted to receive at least one sheet medium;
a sheet feeding roller, having an outer circumferential face which includes a generally flat portion and a curved portion;
a first pivotable member, comprising an extended member extended from a free end portion thereof toward a downstream side in a sheet feeding direction;
a second pivotable member disposed upstream of the inlet section in the sheet feeding direction relative to the first pivotable member, so as to oppose the outer circumferential face of the sheet feeding roller through the inlet section, so that the sheet medium is elastically pressed against the outer circumferential face of the sheet feeding roller; and
a control mechanism operable to pivot the second pivotable member so as to be away from the sheet feeding roller when the flat portion of the sheet feeding roller opposes the second pivotable member through the inlet section. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A sheet feeding device comprising:
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a sheet feeding roller;
a first pressing member disposed facing the sheet feeding roller, the first pressing member being urged in the pressing direction toward the sheet feeding roller; and
a second pressing member disposed facing the sheet feeding roller upstream from the first pressing member, the first pressing member being urged in a pressing direction toward the sheet feeding roller, wherein a sheet receiving area is defined between the first pressing member, the sheet feeding roller and the second pressing member; and
wherein when the sheet feeding roller feeds a sheet from the sheet receiving area in a downstream direction, the sheet is pressed against the sheet feeding roller and the first and second pressing members are pushed by the sheet in a direction opposite from the pressing direction, and wherein the first pressing member is structured such that when a trailing end of the sheet is downstream from the second pressing member, the first pressing member is gradually returned in the pressing direction. - View Dependent Claims (15, 16, 17)
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Specification