Cleaning device for removing residual toner from an image carrier in an image reproduction apparatus

摘要

A cleaning device for removing residual toner on the image bearing member includes a cleaning blade contacting with the surface of the image bearing member and sealing members provided on both end portions of the image bearing member and confronting the cleaning edge of the cleaning blade with a gap. The gap meets the following condition when the average particle diameter per unit volume of the toner used is between 4 mu m and 15 mu m and the level of condensation is between 5% and 40%, if the width and length of the gap between the cleaning edge and the sealing member are W and L, respectively: 0<(W/L)<0.4.