Image forming apparatus having a cleaning roller for a charging roller of the apparatus

An image forming apparatus comprising:

• image carrying means;
• charging means for charging the image carrying means;
• charge cleaning means for contacting and cleaning a surface of the charging means;
• first shaft bearing means for rotatably holding rotation shaft means of the charge cleaning means;
• and
• second shaft bearing means for rotatably holding rotation shaft means of the charging means, the second shaft bearing means integrally including a first shaft bearing means holding means for movably holding, with use of resilient means, the first shaft bearing means in a direction of moving the charging means close to and apart from the charge cleaning means.

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

• an image carrying member;
• a charging roller configured to charge the image carrying member;
• a charging roller cleaning roller configured to contact and clean a surface of the charging roller;
• a first shaft bearing configured to rotatably hold a rotation shaft of the charging roller cleaning roller;
• and
• a second shaft bearing configured to rotatably hold a rotation shaft of the charging roller, the second shaft bearing integrally including a first shaft bearing holding member configured to movably hold, with use of a resilient member, the first shaft bearing in a direction of moving the charging roller close to and apart from the charging roller cleaning roller.

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

• image carrying means;
• charging means for charging the image carrying means;
• charge cleaning means for contacting and cleaning a surface of the charging means;
• first shaft bearing means for rotatably holding rotation shaft means of the charge cleaning means;
• and
• second shaft bearing means for rotatably holding rotation shaft means of the charging means, the second shaft bearing means integrally including first shaft bearing means holding means for movably holding, with use of resilient means, the first shaft bearing means in a direction of moving the charging means close to and apart from the charge cleaning means.

A charging device comprising:

• a charging roller;
• a charging roller cleaning roller configured to contact and clean a surface of the charging roller;
• a first shaft bearing configured to rotatably hold a rotation shaft of the charging roller cleaning roller;
• and a second shaft bearing configured to rotatably hold a rotation shaft of the charging roller, the second shaft bearing integrally including a first shaft-bearing holding member configured to movably hold, with use of a resilient member, the first shaft bearing in a direction of moving the charging roller cleaning roller close to and apart from the charging roller.