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US 9,139,386 B2Granted
Document feeder
AssigneePfu Limited
InventorsKiichiro Shimosaka, Ryoichi Yasukawa
Life of this patent
Estimating the term…
Abstract
A document feeder includes a feed roller provided in a feed path for a document, a conveying roller provided on a downstream side of the feed roller in the feed path, and a protruding portion provided between the feed roller and the conveying roller in the feed path and protruding from a lower side of the feed path.
Claims5
A document feeder comprising:
- a first feed roller and a second feed roller provided side by side in a feed path for a document, the first and second feed rollers being separated from each other and arranged in a lateral direction relative to the feed path;
- a brake roller provided at a position across the first and second feed rollers in the feed path, the brake roller separating the document one by one in cooperation with the first and second feed rollers;
- a conveying roller provided on a downstream side of the first feed roller and the second feed roller in the feed path, the conveying roller and the first and second feed rollers being arranged in a feed path direction;
- and
- a protruding portion provided at a position between the conveying roller and the first and the second feed rollers and between the first feed roller and the second feed roller, the protruding portion being formed on a member on a lower side of the feed path and protruding from the lower side toward an upper side of the feed path, wherein
- the protruding portion protrudes with a height slightly smaller than a height of a predetermined feed path for the document so that the protruding portion contacts or does not contact the document depending on a thickness of the document when the document is conveyed in a normal manner, and
- the protruding portion comes into contact with the document so as to reduce a vibration of the document separated by the brake roller when the vibration is generated.
4 more elements
A document feeder comprising:
- a tray for accommodating a document in a stacked manner;
- a feed roller provided on a lower side of the tray, the feed roller feeding the document stacked on the tray in a feed path;
- a brake roller provided at a position across the feed roller on an upper side of the tray, the brake roller separating the document one by one in cooperation with the feed roller;
- a conveying roller provided on a downstream side of the feed roller in the feed path, the conveying roller conveying the document separated by the brake roller;
- and
- a protruding portion provided at a position between the conveying roller and the feed roller and formed on a member on a lower side of the feed path, the protruding portion protruding from the lower side toward an upper side of the feed path with a height slightly smaller than a height of a predetermined feed path for the document such that the protruding portion contacts or does not contact the document depending on a thickness of the document when the document is conveyed in a normal manner, wherein
- the protruding portion comes in contact with the document so as to reduce a vibration of the document separated by the brake roller when the vibration is generated.
4 more elements
Dependencies are inferred from the claim text.