Patent ID: 6539197
Filing Date: 2003-03-25
Classification: G03G

Abstract:
A cleaning device being part of a copying or printing system for removing residual developer from the surface of an image-delivering member comprising:a cleaning brush in rolling contact with the surface of the image-delivering member for removing residual developer therefrom, the cleaning brush rotating in a first predetermined direction; a collecting roller in rolling contact with the cleaning brush, the collecting roller rotating in a second predetermined direction; a voltage source for biasing the collecting roller to generate an electrical field which attracts the residual developer from the cleaning brush and collects the residual developer onto the surface of the collecting roller; and a cleaning blade having a forward end portion in frictional contact with the collecting roller wherein, in an operative orientation of the device, the cleaning blade is in contact with the collecting roller at a contact position where the collecting roller is moving in an upward direction, the cleaning blade being mounted such that a contact angle defined as the angle between the portion of a line tangent to the collecting roller at the contact position and extending towards an uncleaned portion of the collecting roller and the cleaning blade is less than 90 degrees.