Double Staple Width Adjustment
You can set the double staple width to 4 3/4" (120 mm) or 5 11/16" (145 mm).
This mode can be set when the Staple Finisher-K1 or Booklet Finisher-K1 is attached. (See "Staple Finisher-K1/Booklet Finisher-K1/Puncher Unit-BF1/Inner Booklet Trimmer-A1.")
1.
Press 
(Settings/Registration).
(Settings/Registration).2.
Press [Adjustment/Maintenance] → [Adjust Action] → [Adjust Double Staple Width].
3.
Select either 4 3/4" or 5 11/16" for the double staple width → press [OK].