Patent ID: 7711309
Filing Date: 2010-05-04
Classification: B65H,G03G

Abstract:
1. A sheet feeding device comprising: (a) a conveying member of a conveying unit which conveys a sheet, the conveying unit comprising: (b) a cleaning member which is in sliding contact with a circumferential surface of the conveying member to clean the circumferential surface, wherein the conveying member and the cleaning member rotate in the same tangential direction at a sliding contact position thereof, and drives of the conveyance member and the cleaning member are controlled so that the following expression is satisfied: where V 1 represents a line speed of the circumferential surface of the conveying member during a rotation thereof, and V 2 represents a line speed of a sliding contact portion of the cleaning member during a rotation thereof; the cleaning member is a cleaning brush which is rotated by a driving unit; and the cleaning member cleans the first conveying member and the second conveying member by coming into sliding contact with the first conveying member and the second conveying member.