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US 5,348,283 AGranted
Sheet feeding apparatus having sheet separating means with adjustable feeding force
AssigneeCanon Kabushiki Kaisha
InventorsHaruyuki Yanagi, Tetsuo Suzuki, Soichi Hiramatsu, Takashi Nojima, Satoshi Saikawa
Life of this patent
Estimating the term…
Abstract
The present invention provides a sheet feeding apparatus including a sheet supporting device for supporting sheets, more than one rotary sheet supply device for feeding out the sheets from the sheet supporting device, a separating device for separating the sheets by regulating a front corner of a sheet to be fed out by the rotary sheet supply device, wherein the rotary sheet supply device closest to the separating device as a greater sheet feeding force than the other rotary sheet supply device.
Claims25
A sheet feeding apparatus, comprising:
- sheet supporting means for supporting sheets thereon;
- a plurality of rotary sheet supply means for feeding out the sheets from said sheet supporting means by sheet feeding force;
- separating means for separating the sheets one by one by regulating a front corner of a sheet to be fed out by said plurality of rotary sheet supply means;
- and
- a pair of guide members for regulating both lateral edges of the sheets supported by said sheet supporting means, wherein one guide member of said pair of guide members is located near said separating means and is fixed and the other one guide member of said pair of guide members is movable in accordance with the sizes of the sheets,
- wherein a sheet feeding force of one of said plurality of rotary sheet supply means located closest to said separating means is greater than a sheet feeding force of the remainder of said plurality of rotary sheet supply means.
3 more elements
A recording system comprising:
- sheet supporting means for supporting sheets thereon;
- a plurality of rotary sheet supply means for feeding out the sheets from said sheet supporting means by sheet feeding force;
- separating means for separating the sheets one by one by regulating a front corner of a sheet to be fed out by said plurality of rotary sheet supply means;
- a pair of guide members for regulating both lateral edges of the sheets supported by said sheet supporting means, wherein one guide member of said pair of guide members is located near said separating means and is fixed and the other one guide member of said pair of guide members is movable in accordance with the sizes of the sheets;
- and
- recording means for recording an image on the sheet separated by said separating means wherein a sheet feeding force of one of said plurality of rotary sheet supply means located closest to said separating means is greater than a sheet feeding force of the remainder of said plurality of rotary sheet supply means.
3 more elements
A sheet feeding apparatus, comprising:
- a sheet supporting member for supporting sheets thereon;
- a plurality of rotary sheet supply members for feeding out the sheets from said sheet supporting member;
- a sheet separating member for separating the sheets one by one by regulating one front corner of the sheets fed out by said rotary sheet supply members;
- a pair of guide members for regulating both lateral edges of the sheets supported by said sheet supporting members, wherein one guide member of said pair of guide members is located near said sheet separating member and is fixed and the other one guide member of said pair of guide members is movable in accordance with the sizes of the sheets;
- and
- a plurality of biasing members for biasing said sheet supporting member to urge the sheet supported by said sheet supporting member onto said plurality of rotary sheet supply members, wherein an urging force of one of said plurality of biasing members located closest to said sheet separating member is larger than that of the other of said plurality of biasing members.
3 more elements
A recording system, comprising:
- a sheet supporting member for supporting sheets thereon;
- a plurality of rotary sheet supply members for feeding out the sheets from said sheet supporting member;
- a sheet separating member for separating the sheets one by one by regulating a front corner of one of the sheets to be fed out by said plurality of rotary sheet supply members;
- a pair of guide members for regulating both lateral edges of the sheets supported by said sheet supporting member, wherein one guide member of said pair of guide members is located near said sheet separating member and is fixed and the one guide member of said pair of guide members is movable in accordance with the sizes of the sheets;
- a plurality of biasing members for biasing said sheet supporting member to urge the sheet supported by said sheet supporting member onto said plurality of rotary sheet supply members;
- and
- recording means for recording an image on a sheet separated by said sheet separating member;
- wherein an urging force of one of said plurality of biasing members located closest to said sheet separating member is larger than the urging force of the other of said plurality of biasing members.
5 more elements
A sheet feeding apparatus, comprising:
- sheet supporting means for supporting sheets thereon;
- guide means for guiding both lateral edges of the sheets supported by said sheet supporting means, said guide means being movable in accordance with the sizes of the sheets;
- a plurality of rotary sheet supply means for feeding out the sheets from said sheet supporting means by sheet feeding force;
- and
- separating means for separating the sheets one by one by regulating a front corner of the sheets to be fed out by said plurality of rotary sheet supply means;
- wherein a sheet feeding force of one of said plurality of rotary sheet supply means located closest to said separating means is greater than a sheet feeding force of the remainder of said plurality of rotary sheet supply means so that the sheet separated by said separating means is guided along said guide means straightly.
3 more elements
A recording system comprising:
- sheet supporting means for supporting sheets thereon;
- guide means for guiding both lateral edges of the sheets supported by said sheet supporting means, said guide means being movable in accordance with the sizes of the sheets;
- a plurality of rotary sheet supply means for feeding out the sheets from said sheet supporting means by sheet feeding force;
- separating means for separating the sheets one by one by regulating a front corner of the sheets to be fed out by said plurality of rotary sheet supply means;
- and
- recording means for recording an image on the sheet separated by said separating means;
- wherein a sheet feeding force of one of said plurality of rotary sheet supply means located closest to said separating means is greater than a sheet feeding force of the remainder of said plurality of rotary sheet supply means so that the sheet separated by said separating means is guided along said guide means straightly.
4 more elements
Dependencies are inferred from the claim text.