Image forming apparatus

摘要

An image forming apparatus includes: a rotatable first developer carrier; a tray on which a recording sheet is to be discharged; a switchback roller configured to rotate in a first rotating direction to convey the recording sheet in a direction coming close to the tray, and a control device configured to switch a rotating direction of the switchback roller from the first rotating direction to a second rotating direction opposite to the first rotating direction after rotation of the first developer carrier is stopped.

主权项

1. An image forming apparatus comprising:
an image forming unit including a first photosensitive member configured to form thereon a developer image and a first developing device configured to receive developer and to supply the developer to the first photosensitive member, the image forming unit being configured to transfer the developer image onto a recording sheet and to form an image on the recording sheet; a housing having a discharge opening configured to discharge the recording sheet having the image formed thereon, the image forming unit being disposed in the housing; a switchback roller configured to convey the recording sheet from the image forming unit towards the discharge opening by forwardly rotating the switchback roller and to again convey the recording sheet carried out of the image forming unit towards the image forming unit by reversely rotating the switchback roller; a first driving source including an output shaft configured to transmit a driving force, the first driving source being configured to switch a rotating direction of the output shaft and to rotate the switchback roller in one of a forward direction and a reverse direction by switching the rotating direction of the output shaft; a control device configured to control driving of the first developing device and switchback roller; and a connection/separation mechanism configured to switch a contact state where the first photosensitive member is connected to the first developing roller and a separation state where the first photosensitive member is separated from the first developing roller. wherein the control device stops driving of the first developing device and then rotates the switchback roller in the reverse direction when re-conveying the recording sheet towards the image forming unit, and wherein the control device is configured to control the connection/separation mechanism to set the separation state e switchback roller is rotated in the reverse direction.