Cleaning blade member and method for producing the same
View Patent ↗The invention provides a cleaning blade member having a controlled friction coefficient and a method for producing the same. The cleaning blade member, for use in a cleaning part for removing toner deposits, is formed of a polyurethane having a ratio of rebound resilience at 25° C. to Young's modulus (rebound resilience at 25° C./Young's modulus) of 4.5 or less.
1. A cleaning blade member for use in a cleaning part for removing toner deposits, wherein the cleaning blade member is formed of a polyurethane having a ratio of rebound resilience at 25° C. to Young's modulus (rebound resilience at 25° C./Young's modulus) of 4.5 or less.
2. A cleaning blade member according to claim 1 , wherein the polyurethane has a 200% modulus of 7 MPa or higher, a tear strength of 50 kN/m or higher, and a tan δ (1 Hz) peak temperature of +10° C. or lower.
3. A cleaning blade member according to claim 1 , wherein the polyurethane has a static friction coefficient of 2.7 or less.
4. A method for producing a cleaning blade member for use in a cleaning part for removing toner deposits, wherein the method comprises blending a polyol, a polyisocyanate, and a cross-linking agent such that a polyurethane formed therefrom has a ratio of rebound resilience at 25° C. to Young's modulus (rebound resilience at 25° C./Young's modulus) of 4.5 or less.
5. A method for producing a cleaning blade member according to claim 4 , wherein the polyurethane has a 200% modulus of 7 MPa or higher, a tear strength of 50 kN/m or higher, and a tan δ (1 Hz) peak temperature of +10° C. or lower.