Patent ID: 6067427
Filing Date: 2000-05-23
Classification: G03G

Abstract:
A method for removing remaining toner from an image forming apparatus, comprising the steps of:supplying toner to a photosensitive drum by a supplying roller and by a developing roller using an electric potential difference between a supplying voltage for the supplying roller having a first voltage level and a developing voltage for the developing roller having a second voltage level higher than the first voltage level for the supplying voltage,determining a starting point of a non developing time during which no printing is performed;increasing the supplying voltage for the supplying roller from the first voltage level to a third voltage level higher than the second voltage level for the developing voltage for the developing roller during at least a part of the non developing time; andreturning the supplying voltage for the supplying roller to the first voltage level after a predetermined time passes from the starting point of the non developing time.