When a paper tray is pushed into the machine:
- The pressure slide arm [A] forces the separation roller [B] up to close the nip between the separation roller and feed roller [C].
- When the paper tray lift motor switches on and lifts the bottom plate and stack, the tray is at paper feed standby position and ready to feed paper after the paper feed and transport motors switch on.
Each PFU is equipped with a notch mechanism to adjust the pressure of the nip between the separation roller and feed roller. This is a new feature.
- The rear position [1] is the default, the center position [2] forces more pressure at the nip, and the forward position [3] forces the most pressure at the nip.
- This adjustment is done when misfeeds and double-feeds become frequent due slippage caused by the accumulation of paper dust on the separation roller when using coarse paper.
- This adjustment can also be done to correct double-feeding due to worn rollers until replacement rollers become available.
- This is a TCRU adjustment and can be done independently for each PFU without removing it.
- However, Paper Tray 1 (Tandem Tray) must be removed in order to access the adjustment screws. (PFU Separation Roller Nip Adjustment)