RETARD DRIVE INVERTER

摘要

A copier capable of producing simplex and duplex copies includes a tri-roll inverter that employs a ball on roll return force applicator located downstream from the tri-roll input/output members. A sheet coming into the inverter is driven by a pair of the tri-rolls into a nip formed between the ball and roll of the return force applicator. The roll which has a minimal friction force is rotated continuously in the opposite direction to the incoming sheet. When the last portion of the sheet is driven into the ball on roll nip, the friction force of the nip will cause the sheet to buckle into an output nip of the tri-roll members for outward movement.