Electrophotographic image forming apparatus, and electricity removing member used in image forming apparatus

An image forming apparatus comprising:

• a photoconductor;
• and
• an electricity removing member electrically grounded and rotatably disposed to be in contact with a surface of the photoconductor, wherein
• with regard to a resistance component of an inner impedance of the electricity removing member and a resistance component of a contact impedance of the electricity removing member that are calculated from a Cole-Cole plot obtained from measurement in a predetermined frequency range by an AC impedance method,
• the resistance component of the inner impedance is equal to or lower than a value that is obtained by multiplying a calculated resistance value by a first specific value, the calculated resistance value being calculated based on a predetermined formula as a DC resistance value of the electricity removing member that is required to reduce a pre-electricity-removal potential of the photoconductor to a predetermined post-electricity-removal potential during an electricity removal time that is obtained by dividing a contact width between the photoconductor and the electricity removing member by a linear speed of the photoconductor, the first specific value being calculated based on a ratio of a linear speed of the electricity removing member to the linear speed of the photoconductor, and
• the resistance component of the contact impedance is equal to or lower than a value that is obtained by multiplying the calculated resistance value by a second specific value that is calculated based on the ratio of the linear speed of the electricity removing member to the linear speed of the photoconductor.