Image forming apparatus

An image forming apparatus comprising:

• an image bearing member that carries a toner image;
• a rotatable endless belt facing the image bearing member;
• and
• a transfer device arranged on an inner peripheral side of the belt and transferring a toner image from the image bearing member to the belt, the transfer device including a sheet member having conductivity, a separated portion including a fixed end on an upstream side in a rotational movement direction of the belt and being spaced from the belt, and a contact portion including a free end on a downstream side in the rotational movement direction of the belt and being in contact with the belt, a support member supporting the separated portion of the sheet member, and a pressing member pressing the support member toward the sheet member,
• wherein, where a position being most upstream in the contact portion in the rotational movement direction of the belt is a first position, and where a position being most downstream in a region of the separated portion supported by the support member in the rotational movement direction of the belt is a second position, the support member is arranged relative to the sheet member such that a region between the first position and the second position of the sheet member is in contact with neither the belt nor the support member.