Patent ID: 9274462
Filing Date: 2016-03-01
CPC Classification: G03G

Claim Text:
1. A transfer member comprising: a shaft; and a body that is supported by the shaft, wherein when a measurement member extending in an axial direction of the shaft 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 measured based on a change in electric potential occurring on a surface of the measurement member is defined as a first time constant τv [s], wherein when a first measurement member extending in the axial direction is brought into contact with the outer surface of the body, a second measurement member extending in the axial direction is brought into contact with the outer surface of the body while being spaced apart from the first measurement member by a predetermined distance in a circumferential direction of the outer surface of the body, and voltage applied to the first measurement member is changed by electrically connecting the shaft to ground, a time constant measured based on a change in electric potential occurring on a surface of the second measurement member is defined as a second time constant τs [s], and wherein the first time constant τv [s] is larger than the second time constant τs [s].