Image forming apparatus

An image forming apparatus, comprising:

• an image carrying member which has a photosensitive layer on an outer circumferential surface thereof;
• a charging device which electrostatically charges the outer circumferential surface of the image carrying member;
• an exposing device which exposes to light the outer circumferential surface of the image carrying member electrostatically charged by the charging device to form an electrostatic latent image on the outer circumferential surface of the image carrying member;
• a developing device having:
• a developing roller which extends parallel to an axial direction of the image carrying member and which is disposed close to the image carrying member, the developing roller attaching toner to the electrostatic latent image to form a toner image;
• a cleaning device having:
• a cleaning blade which extends along the axial direction of the image carrying member and which makes contact with the outer circumferential surface of the image carrying member to remove toner on the outer circumferential surface of the image carrying member;
• and
• a polishing roller which extends parallel to the axial direction of the image carrying member and which rotates while in contact with the outer circumferential surface of the image carrying member to polish the outer circumferential surface of the image carrying member,
• wherein
• the developing roller has a guaranteed development region that extends over a predetermined length from a middle toward opposite end sides along the axial direction,
• opposite end parts of the polishing roller along the axial direction are located outward of opposite end parts of the developing roller,
• the cleaning device has a toner keeping member, the toner keeping member having toner keeping portions that are disposed at opposite end sides of the polishing roller along the axial direction with a gap left from an outer circumferential surface of the polishing roller, the toner keeping portions keeping between themselves and the polishing roller the toner removed off the outer circumferential surface of the image carrying member,
• the toner keeping portions extend along an axial direction of the polishing roller, and of each of the toner keeping portions, one end part along the axial direction is located outward of an end part of the guaranteed development region but inward of an end part of the developing roller and another end part is located outward of the end part of the polishing roller.