Patent ID: 6478294
Filing Date: 2002-11-12
Classification: B65H

Abstract:
A sheet feeding device comprising:a feeding roller which is driven to rotate; a base plate having an upper surface of a predetermined surface area upon which a stack of sheets is stacked, said base plate being configured to rotate around a supporting axis located near a rear end thereof in directions to contact and separate from said feeding roller located adjacent to a front end of said base plate, said upper surface of said base plate having a first part located adjacent said front end thereof and a second part located adjacent said rear end thereof, and said base plate being formed of a sheet metal material having relatively little frictional resistance; a base plate pressing member configured to press said base plate to be rotated toward said feeding roller such that an uppermost sheet of the stack of sheets stacked on said base plate contacts said feeding roller so as to be fed by said feeding roller; a first friction device including a first friction member arranged in said first part of said upper surface of said base plate so as to oppose said feeding roller, said first friction member being made of a first frictional material which provides a bottom sheet of the stack of sheets stacked on said base plate with a first frictional resistance Fc greater than a predetermined value; and a second friction device including a second friction member arranged upstream of said first friction member in a sheet feeding direction, said second friction member being made of a second frictional material which provides the bottom sheet of the stack of sheets stacked on said base plate with a second frictional resistance Fd greater than the predetermined value, said second frictional material being different from said sheet metal material of said base plate.