Charging device, process cartridge, and image forming apparatus

A process cartridge attachable to and detachable from an image forming apparatus, the process cartridge comprising:

• an image bearing member;
• a charging member being in contact with an image bearing member and configured to charge the image bearing member while rotating;
• and
• a brush member being in contact with the charging member,
• wherein the charging member includes a force receiving portion that receives a force in a direction in which the charging member is moved in a longitudinal direction of the charging member while rotating,
• wherein the charging member is in contact with the brush member at a place different from a place of the force receiving portion, and
• wherein a component of the force received by the charging member at the force receiving portion in the longitudinal direction and a component of a force received by the charging member resulting from tilting of bristles in the brush member in the longitudinal direction are in an identical direction.

An image forming apparatus comprising:

• an image bearing member;
• a charging member being in contact with an image bearing member and configured to charge the image bearing member while rotating;
• and
• a brush member being in contact with the charging member,
• wherein the charging member includes a force receiving portion that receives a force in a direction in which the charging member is moved in a longitudinal direction of the charging member while rotating,
• wherein the charging member is in contact with the brush member at a place different from a place of the force receiving portion, and
• wherein a component of the force received by the charging member at the force receiving portion in the longitudinal direction and a component of a force received by the charging member resulting from tilting of bristles in the brush member in the longitudinal direction are in an identical direction.