Patent ID: 9139386
Filing Date: 2015-09-22
Classification: B65H

Abstract:
1. 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.