Patent ID: 6118970
Filing Date: 2000-09-12
Classification: G03G

Abstract:
A cleaning roller for electrostatically attracting residual toner particles on a photoconductive drum, the cleaning roller comprising:a shaft; anda member formed on said shaft to cover said shaft, said member having contact portions that lie in a cylindrical plane and a plurality of recesses that are formed in said member and bounded by the contact portions, the contact portions being in contact with the photoconductive drum to attract residual toner particles left on the photoconductive drum, the recesses holding therein the residual toner particles attracted to the contact portions, the recesses having openings that lie in the cylindrical plane,wherein the openings of the recesses have effective diameters in the range from 50 to 150 .mu.m if the toner particles have effective diameters in the range from 6 to 9 .mu.m.