| abstract |
PROBLEM TO BE SOLVED: To provide a foamed rubber roller in which generation of ammonia causing an image defect is suppressed when used for a roller member of an electrophotographic apparatus or an electrostatic recording apparatus. In a foamed rubber roller having one or more foamed rubber layers on the outer periphery of a core metal, a carbonamide foaming agent, p, p'-oxybisbenzenesulfonylhydrazide, and a raw rubber composition for the foamed rubber layer, A raw rubber composition containing hydrotalcite and not containing urea is used. [Selection] Figure 1 |