Patent ID: 6345167
Filing Date: 2002-02-05
Classification: G03G

Abstract:
A toner image reproduction machine comprising:(a) a moveable image bearing member including a belt; (b) imaging means including a controller for forming a first desired toner image, and a second desired toner image, on said moveable image bearing member; (c) a moveable intermediate transfer member including a belt, the transfer member forming a transfer nip arrangement with said image bearing member; (d) a first pair of backing rollers forming an entrance to the transfer nip; (e) a second pair of backing rollers forming an exit from the transfer nip downstream of said first pair of backing rollers relative to movement of said image bearing member; and (f) transfer means for first transferring, within said transfer nip arrangement, said first desired toner image from said moveable image bearing member onto said moveable intermediate transfer member, and for next simultaneously transferring both said first desired toner image from said intermediate transfer member onto a first side of a copy sheet then being fed through said transfer nip arrangement, and said second desired toner image from said image bearing member onto a second side of the copy sheet, thus producing a two-sided imaged copy sheet during a single pass of the copy sheet through the machine.