Patent ID: 7934316
Filing Date: 2011-05-03
Classification: G03G,Y10T

Abstract:
1. A method of manufacturing a charging roller, comprising the steps of: (i) forming a rubber base material, to which an ionic conductive agent is added, on a conductive supporting body of the charging roller as a conductive agent-containing rubber layer; and (ii) carrying out a hardening treatment with respect to a surface of the conductive agent-containing rubber layer by using a surface treatment liquid containing at least an isocyanate compound, wherein: a correlation between (a) a degree of progress of the hardening treatment and (b) a coefficient of dynamic friction between the surface of the conductive agent-containing rubber layer and a surface of an image carrier contacting the surface of the conductive agent-containing rubber layer is found in advance, and a range of the coefficient of the dynamic friction is set by using the correlation; and in the step (ii), the hardening treatment is carried out until the coefficient of the dynamic friction becomes within the range thus set.