Patent ID: 7020407

Claim:
A transferring apparatus comprising: a transferring member applied with a transfer voltage for transferring a toner image on an image bearing member to a recording material; a positive voltage generating portion that generates a positive-polarity voltage that is applied to the transferring member; a negative voltage generating portion that generates a negative-polarity voltage that is applied to the transferring member; and a control portion that controls the transfer voltage applied to the transferring member, the control portion controlling the positive voltage generating portion and the negative voltage generating portion, wherein the control portion performs control in a first mode adapted to generate the transfer voltage by superimposing the negative-polarity voltage and the positive-polarity voltage in a case where the transfer voltage applied to the transferring member is smaller than a predetermined threshold voltage, and wherein the control portion performs control in a second mode adapted to generate the transfer voltage from the positive-polarity voltage, without superimposing the negative-polarity voltage, in a case where the transfer voltage applied to the transferring member is larger than the predetermined threshold voltage.