| 摘要 |
PURPOSE:To attain a good registration for toner image transfer and to attain a good transfer image without toner image scattering by providing an air blow- off nozzle above a transfer corotron in the form carrying direction. CONSTITUTION:A gripper 56 is attached rotatably to a gripper bar 32 and is always energized in such a direction that it is closed to a sheet 58 of the gripper bar 32. The gripper 56 of the gripper bar 32 is opened in the position of a reference sensor and the position of a driving sprocket by an actuator to grip or release a form 22. An air blow-off nozzle 60 is provided above a transfer corotron 48 in the form carrying direction, and air is blown to the lower face of the form 22 from a nozzle front end 62, and the form 22 is so guided that it is brought into close contact with a photosensitive drum 10. |
