To adjust the folding strength, adjust the difference in vertical alignment between the flat fold rollers.

  1. Booklet stapler unit Booklet Stapler Unit
  2. Fold plate bracket [A] ( x 2)
  3. Open the bracket [A] of the flat fold roller.

  4. Change the position of the flat fold lower roller [A] to change the difference in alignment between the upper and lower rollers of the flat fold booklet unit.

    • With the factory default, the upper and lower rollers of the flat fold booklet unit are not aligned vertically. There is a 3mm difference [D] between the upper and lower rollers. However, you can change the lower roller position from [B] (factory default) to [C]. If you change the lower roller position to [C], the difference becomes 0mm. In this condition, the upper and lower rollers are aligned vertically.
    • If the toner does not stick well to the folding line of the booklet due to excessive folding strength, change the lower roller position to [C]. In this position, the booklet will be thicker than the factory default position.
    • If you want increase the folding strength, the lower roller position should be [B] (factory default position). In addition, this will make the booklet thinner.
      If you want to reduce the folding strength, the lower roller position should be [C] (the difference in alignment is 0mm). In addition, this will make the booklet thicker.

    Difference in Alignment and Folding Strength

    Difference in Alignment

    Folding Strength

    Thickness of the booklet

    The amount of toner sticking to the folding line

    3mm (default)

    Strong

    Thin

    OK

    0mm

    Weak

    Thick

    Good

  5. Close the bracket after the adjustment.
  6. Reassemble the machine.