Transfer belt unit and image forming apparatus using the same

• Main Authors: NOMURA YUJIRO, ARUGA TOMOE, ABE NOBUMASA
• Format: Patent
• Language: English
• Published: 24.03.2005
• Edition: 7
• Subjects: CINEMATOGRAPHY; CONVEYING; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HANDLING THIN OR FILAMENTARY MATERIAL; HOLOGRAPHY; MAGNETOGRAPHY; PACKING; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; PNEUMATIC TUBE CONVEYORS; SHOP CONVEYOR SYSTEMS; STORING; TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING; TRANSPORTING

A transfer belt unit and image forming apparatus that achieves the reduction in size and cost of a transfer belt unit and can prevent fluctuation of the cleaning performance. The unit has a transfer belt, a plurality of rollers around which the transfer belt 14 is laid with certain tension, wherein at least one of the rollers is a tension roller 13 for tensioning to the transfer belt; frames supporting the plurality of rollers; tensioning mechanisms which are disposed on the side faces of the frames to bias the tension roller in a belt tensioning direction; a cleaning means being in contact with the transfer belt at a position opposing the tension roller; rotation preventing members which prevent the rotational torque from being transmitted to the cleaning means; and position restricting members which restrict the relative position between the cleaning means and the tension roller.