Patent ID: 8777214
Filing Date: 2014-07-15
Classification: B65H

Abstract:
1. A sheet feeder including a feed roller for feeding a sheet and a lifting plate for lifting the sheet to be fed up to a feeding height for the feed roller, the device including: a wire for raising the lifting plate; and a winding member formed with a winding configuration section for winding up the wire to raise the lifting plate, wherein the winding configuration section includes: a high-position winding section for winding the wire while the lifting plate is located on a high-position side in a lifting height; a low-position winding section for winding the wire while the lifting plate is located on a low-position side in the lifting height, the high-position winding section having a larger radius than a radius of the low-position winding section; and a middle-position winding section for winding the wire while the lifting plate is located in a middle region between the high-position side and the low-position side in the lifting height, the middle-position winding section being between the high-position winding section and the low-position winding section, and the middle-position winding section has a winding radius decreasing from a high-position winding section side toward a low-position winding section side.