Staple Finisher-B1/Booklet Finisher-B1/External 2/3 Hole Puncher-A1 (Optional) 1-571Routine MaintenanceReplacing the Staple Cartridge in the Saddle Stitcher UnitWhen the saddle stitcher unit of the Booklet Finisher-B1 is almost out of staples and the staple cartridge in the saddle stitcherunit must be replaced, a screen prompting you to replace the staple cartridge appears on the touch panel display. Follow theprocedure described below to replace the staple cartridge.Use only staple cartridges intended for use with this machine. See e-Manual > Optional Products (imageRUNNER ADVANCEC7065/C7055).If necessary, remove all of the output paper in the Booklet Tray before replacing the staple cartridge in the saddle stitcher unit.This procedure is necessary only if the Booklet Finisher-B1 is attached.We recommend that you order staple cartridges from your local authorized Canon dealer before your stock runs out.Remove the black part on the end before inserting the staple cartridge.1 Open the front cover of the finisher•••