A transfer member includes a shaft and a body. When a measurement member is brought into contact with an outer surface of the body and voltage applied to the measurement member is changed by electrically connecting the shaft to ground, a time constant τv is measured based on a change in electric potential occurring on a surface of the measurement member. When a first measurement member is brought into contact with the outer surface, a second measurement member is brought into contact with the outer surface while being spaced apart from the first member by a predetermined distance in a circumferential direction of the outer surface, and voltage applied to the first member is changed by electrically connecting the shaft to ground, a time constant τs is measured based on a change in electric potential occurring on a surface of the second member. τv is larger than τs.