Image forming apparatus including movable brush member

An image forming apparatus comprising:

• an image bearing member on which an electrostatic latent image is formed, and that is rotatable;
• a charging member that charges the image bearing member and is rotatable;
• a developing member that develops, as a developer image, the electrostatic latent image formed on the image bearing member;
• a transfer member that transfers the developer image to a recording material;
• and
• a brush member that includes a fiber yarn and has a flat shape, and that can come into contact with a surface of the image bearing member at a downstream side with respect to the transfer member and at an upstream side with respect to the charging member in a rotation direction of the image bearing member, wherein
• the image bearing member and the brush member are relatively movable to a first position at which a leading end of the fiber yarn comes into contact with the surface of the image bearing member, and a second position at which the leading end of the fiber yarn separates from the surface of the image bearing member, and
• a relative separating direction of the brush member from the image bearing member upon relative movement from the first position to the second position is a direction from a downstream side to an upstream side in the rotation direction of the image bearing member.

An image forming apparatus comprising:

• an image bearing member on which an electrostatic latent image is formed, and that is rotatable;
• a charging member that charges the image bearing member and is rotatable;
• a developing member that develops, as a developer image, the electrostatic latent image formed on the image bearing member;
• a transfer member that transfers the developer image to a recording material;
• and
• a brush member that includes a fiber yarn and has a flat shape, and that can come into contact with a surface of the image bearing member at a downstream side with respect to the transfer member and at an upstream side with respect to the charging member in a rotation direction of the image bearing member, wherein
• the image bearing member and the brush member are relatively movable to a first position at which a leading end of the fiber yarn separates from the surface of the image bearing member, a second position at which the leading end of the fiber yarn comes into contact with the surface of the image bearing member, and a third position at which the leading end of the fiber yarn separates from the surface of the image bearing member, and that is different from the first position, and
• in the rotation direction of the image bearing member, a position of the brush member at the first position is on a downstream side with respect to the position of the brush member at the second position, and the position of the brush member at the third position is on an upstream side with respect to the position of the brush member at the second position.

An image forming apparatus comprising:

• an image bearing member on which an electrostatic latent image is formed, and that is rotatable;
• a charging member that charges the image bearing member and is rotatable;
• a developing member that develops, as a developer image, the electrostatic latent image formed on the image bearing member;
• a transfer member that transfers the developer image to a recording material;
• and
• a brush member that includes a fiber yarn and has a flat shape, and that can come into contact with a surface of the image bearing member at a downstream side with respect to the transfer member and at an upstream side with respect to the charging member in a rotation direction of the image bearing member, wherein
• the image bearing member and the brush member are relatively movable to a first position at which a leading end of the fiber yarn separates from the surface of the image bearing member, a second position at which the leading end of the fiber yarn comes into contact with the surface of the image bearing member, and a third position at which the leading end of the fiber yarn separates from the surface of the image bearing member, and that is different from the first position, and
• a relative approaching direction of the brush member to the image bearing member upon relative movement from the first position to the second position, and a relative separating direction of the brush member from the image bearing member upon relative movement from the second position to the third position is a direction from a downstream side to an upstream side in the rotation direction of the image bearing member.