A toner layer regulating system for an electrophotographic image forming
apparatus comprises a toner carrier; a metallic toner regulating member
having a stress-strain curve prior to assembly with an elastic region, an
inelastic region, and an initial yield stress value; and the toner
regulating member supported in cantilevered fashion against the toner
carrier so as to form a toner nip therebetween with an applied stress on
the toner regulating member greater than the initial yield stress value.
The metallic toner regulating member may comprise a metallic substrate
and a coating thereon; the coating helping to form the toner nip. By
deflecting the toner regulating member, when installed, by an amount that
induces strains falling outside the elastic region of the corresponding
stress-strain curve, the toner regulating system is less sensitive to
geometrical variances.