Stacking for Booklet Stapling 
SM 49 B793 
Booklet 
Finisher 
B793 
2.9  STACKING FOR BOOKLET STAPLING 
2.9.1 OVERVIEW 
There are two stoppers near the stapler unit. These stoppers hold the stack of paper in the 
correct position during stacking. 
The stoppers are called ‘stopper S’ and ‘stopper L’. Stopper S is used for legal size paper, 
or shorter than 8.5 x 14 inches. Stopper L is used for paper that is longer than 8.5 x 14 
inches. 
 
  In corner stapling mode, the pawl on the stack feed-out belt holds the stack of 
paper. For booklet stapling, this pawl stays at home position, which is on the rear 
side, so it does not interfere with booklet stapling. 
2.9.2  8.5 X 14 (LEGAL) OR SHORTER 
 
At the start of the set, the upper retraction motor [A] turns on, and stopper S [B] moves 
down into position to catch the paper 
. The upper retraction motor also moves the upper 
clamp roller [C] into contact with the stack 
.