Image forming apparatus

An image forming apparatus comprising:

• an image bearing member configured to be driven to rotate;
• a charging member configured to face a surface of the image bearing member to form a charging portion and charge the surface of the image bearing member;
• a developing roller configured to feed a developer to the surface of the image bearing member charged by the charging member to form a developer image;
• a transfer roller configured to form a transfer portion between the transfer roller and the image bearing member to transfer the developer image from the image bearing member to a transferred member;
• and
• a brush configured to be brought into contact with the surface of the image bearing member to form a brush portion on a side downstream of the transfer portion and upstream of the charging portion in a rotation direction of the image bearing member,
• wherein, after the transfer of the developer image onto the transferred member, the developer remaining on the surface of the image bearing member being collected by the developing roller,
• wherein the brush is disposed such that, in a cross section perpendicular to a rotation axis of the image bearing member, a contact region of the surface of the image bearing member in contact with the brush overlaps a virtual line containing the rotation axis of the image bearing member and extending upward from the rotation axis in a vertical direction, and
• wherein, in the cross section perpendicular to the rotation axis of the image bearing member, on the surface of the image bearing member, a length on the surface of the image bearing member from the transfer portion to the brush portion in the rotation direction of the image bearing member is shorter than a length on the surface of the image bearing member from the charging portion to the transfer portion in the rotation direction of the image bearing member.