Patent ID: 6461674
Filing Date: 2002-10-08
Classification: G03G,Y10T

Abstract:
A method of producing a developing roller, comprising steps of:providing a roller core having an electrically conductive layer provided on a circumferential surface thereof, applying areactionmixture containing apolyol, anisocyanate compound, and apore-forming agent comprising a volatile silicone oil to a surface of said conductive layer, and subjecting said reaction mixture to a reaction condition for reacting said polyol with said isocyanate compound, thereby forming a covering layer having a thickness of from 4 to 30 &mgr;m and volatilizing the volatile silicone oil to leave micropores in said covering layer having a pore diameter of from 0.1 to 3 &mgr;m, with the pores created by substantially completely volatilizing the silicone oil during the reaction between isocyanate and polyol.