Phaser 6121MFP Service Manual 2-37
Theory of Operation
Transfer Roller
The Transfer Roller (sometimes referred to as the 2nd Transfer Roller) transfers the 
developed image from the Transfer Belt to the media. To allow development of the 
composite color image on the Transfer Belt, the Transfer Roller retracts from the 
belt while the image is developed.
The Transfer Roller retraction operation is performed by the Main Motor, Image 
Transfer Solenoid, and Transfer Roller Clutch. When the Image Transfer Solenoid is 
energized, drive from the Main Motor is transmitted to the Transfer Roller Clutch.