If the paper transfer roller is permanently in contact with the image transfer belt, the toner on the image transfer belt moves to the roller and soils the underside of the paper surface, therefore the paper transfer roller is separated during Process Control or MUSIC control (it is not separated during real-time process control).
Separation of the paper transfer roller is achieved by transmitting the drive of the paper transfer contact and release motor (M18) via the ITB unit joint.
[A]: TM/ID sensor (center)
[B]: Paper transfer roller Home Position sensor
[C]: Paper transfer contact and release motor (M18))
[D]: Cam
[E]: Paper transfer roller
[F]: Image transfer drive roller