Patent ID: 9665061
Date: 2017-05-30
CPC Classifications: G03G

Claim:
1. A cleaning blade comprising an elastic body which is a molded article of a rubber material, the elastic body having a surface-treated layer formed at least on an abutting part with an object of contact, the cleaning blade being characterized in that the surface-treated layer is formed by impregnating the elastic body with a surface treatment liquid which contains a bi-functional isocyanate compound, a tri-functional polyol, and an organic solvent, or with a surface treatment liquid which contains an organic solvent and an isocyanate-group-containing compound having an isocyanate group produced as a result of reaction between the bi-functional isocyanate compound and the tri-functional polyol, followed by curing; the ratio between an isocyanate group contained in the bi-functional isocyanate compound and a hydroxyl group contained in the tri-functional polyol (NCO group/OH group) is 1.0 to 1.5; and the surface-treated layer has a thickness of 10 μm to 100 μm.