Polyurethane member for use in electrophotographic apparatus

1 . A cast-formable electrophotography polyurethane member produced through hardening and molding a polyurethane composition containing at least polyol, polyisocyanate, and a diamino compound, wherein the diamino compound has a melting point of 80° C. or lower and contains no chlorine atom but contains an aromatic ring in the molecular structure thereof and exhibits a reaction rate slower than that of 2,2′,3,3′-tetrachloro-4,4′-diaminodiphenylmethane under given hardening and molding conditions.

2 . An electrophotography polyurethane member according to claim 1 , wherein the polyurethane member exhibits a tans peak intensity of 0.7 or lower and a (tans peak intensity/tan δ intensity at 50° C.) of 10 or less.

3 . An electrophotography polyurethane member according to claim 1 , wherein the diamino compound is incorporated into the polyurethane composition in an amount of 0.15 mmol/g or less.

4 . An electrophotography polyurethane member according to claim 1 , wherein the polyurethane member exhibits a tan δ (10 Hz) peak temperature of 5° C. or lower.

5 . An electrophotography polyurethane member according to claim 1 , wherein the polyurethane member exhibits a ((rebound resilience at 50° C.)−(rebound resilience at 10° C.)) of 40% or less.

6 . An electrophotography polyurethane member according to claim 1 , wherein the polyurethane member exhibits a hardness (JIS A) of 70 to 95°.

7 . An electrophotography polyurethane member according to claim 1 , wherein the polyurethane member is employed as a blade member.