Sheet feeding apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsAkira Oomori, Masao Amano, Eiichiro Kimizuka, Daisuke Aoki
Life of this patent
Estimating the term…
Abstract
An over-stack protective portion is provided on a stopper member. When a sheet feeding device is in a standby position, the over-stack protective portion is held in a position in which the over-stack protective portion is in pressure contact with sheets having the maximum stacking height capable of being fed and supported by a sheet supporting portion. Also, when the sheets are to be fed, the pressure contact of the over-stack protective portion with the sheets having the maximum stacking height is released.
Claims7
A sheet feeding apparatus comprising:
- a sheet supporting portion configured to support sheets;
- a sheet feeding device, which is movably held by a holding portion, movable between a sheet feeding position for feeding the sheets supported by said sheet supporting portion and a standby position spaced from the sheets supported by said sheet supporting portion;
- a stopper member configured to regulate leading edges of the sheets supported by said sheet supporting portion in the standby position of the sheet feeding device and to release a regulation on the sheet leading edges in the sheet feeding position of the sheet feeding device;
- a width direction regulating member provided on said stopper member configured to regulate a position of the sheets supported by said sheet supporting portion in a width direction of the sheets;
- and
- an over-stack protective portion provided on said stopper member configured to restrict an insertion of sheets higher than a maximum stacking height capable of being supported by said sheet supporting portion,
- wherein a movement of said over-stack protective portion is regulated to restrict the insertion of sheets when said sheet feeding device is in said standby position, and said over-stack protective portion is released from a regulation of the movement in association with a movement of said sheet feeding device from the standby position to the sheet feeding position.
An image forming apparatus comprising:
- a sheet supporting portion configured to support sheets;
- a sheet feeding device, which is moveably held by a holding portion, movable between a sheet feeding position for feeding the sheets supported by said sheet supporting portion and a standby position spaced from the sheets supported by said sheet supporting portion;
- a stopper member configured to regulate leading edges of the sheets supported by said sheet supporting portion in the standby position of the sheet feeding device and to release a regulation on the sheet leading edges in the sheet feeding position of the sheet feeding device;
- a width direction regulating member provided on said stopper member configured to regulate a position of the sheets supported by said sheet supporting portion in a width direction of the sheets;
- an over-stack protective portion provided on said stopper member configured to restrict an insertion of sheets higher than a maximum stacking height capable of being supported by said sheet supporting portion;
- and
- an image forming portion configured to form an image on the sheet fed out by said sheet feeding device,
- wherein a movement of said over-stack protective portion is regulated to restrict the insertion of sheets when said sheet feeding device is in said standby position, and said over-stack protective portion is released from a regulation of the movement in association with a movement of said sheet feeding device from the standby position to the sheet feeding position.
Dependencies are inferred from the claim text.