Paper feeder
AssigneeRiso Kagaku Corporation
InventorYoshihisa Morita
Life of this patent
Estimating the term…
Abstract
This paper feeder brings the uppermost paper sheet of a plurality of stacked paper sheets into contact with paper feed rollers and feeds out the paper sheet in a paper feeding direction by the drive thereof. Side fences for guiding both side edges of the paper sheet on a paper feeding table are provided with a pair of blowing units for blowing air to both side edges of the paper sheet, whose air quantity can be controlled independently of each other. When skewing occurs, the blowing units are controlled to blow a larger quantity of air to the paper side edge having larger friction against a lower paper sheet as compared with the quantity of air to the other paper side edge. In paper feeding, problems such as skewing, multi-feeding and idle feeding can be addressed.
Claims4
A paper feeder, comprising:
- a paper feed table on which paper sheets are stacked;
- a paper feed roller, which is provided at a predetermined position above the paper feed table and driven in contact with an upper surface of the uppermost paper sheet of paper sheets stacked on the paper feed table to feed the uppermost paper sheet in the paper feeding direction;
- and
- a pair of blowing units, which are provided along a paper width direction, and controlled independently of each other to blow air below the uppermost paper sheet.
Dependencies are inferred from the claim text.