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US 6,805,341 B2Granted
Sheet feeding device and image forming apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorKimiaki Furukawa
Life of this patent
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Abstract
A paper feeder of the present invention includes a paper tray for supporting paper and pickup rollers in total width more than 40% of the maximum paper width supportable by a paper tray for taking out a paper at the top position in a specified direction. This paper feeder is used for paper feeding of image forming apparatuses.
Claims15
A paper feeder comprising:
- a paper tray to support paper;
- and
- pickup rollers to take out a top positioned paper supported by the paper tray in a prescribed take-out direction, some of the pickup rollers being attached to a first shaft arranged at a leading edge side of the paper in the paper take-out direction and others of the pickup rollers attached to a second shaft arranged at a trailing edge side of the paper in the paper take-out direction, wherein a paper take-out speed by the pickup rollers attached to the second shaft is faster than a paper take-out speed by the pickup rollers attached to the first shaft.
An image forming apparatus comprising:
- a main body;
- a paper supply tray provided in the main body to support paper;
- pickup rollers to take out paper supported by the paper supply tray in a prescribed direction, some of the pickup rollers being attached to a first shaft arranged at a leading edge side of the paper in the paper take-out direction and others of the pickup rollers being attached to a second shaft arranged at a trailing edge side of the paper in the paper take-out direction, wherein a paper take-out speed by the pickup rollers attached to the second shaft is faster than a paper take-out speed by the pickup rollers attached to the first shaft;
- a paper separation mechanism to separate the paper taken out by the pickup rollers one by one;
- and
- image forming mechanisms provided in the main body to form images on the paper separated by the paper separation mechanism.
3 more elements
Dependencies are inferred from the claim text.