Lexmark MX81 Series Service Manual page 796

7463
Stapling process
Exit rollers move the media to the tamper where it will be prepared for stapling. Multiple pages can be stacked on the
tamper before the document is stapled. The paddle drive motor rotates the paddle rollers for aligning the trailing edge
of the pages. The paddle rollers align the trailing edges by pushing each page towards a wall. The left and right tampers
compress to align the left and right edges of the document to be stapled. The document is then moved towards the
stapler cartridge for stapling. A corner of the trailing edge is held by a paper clamping mechanism controlled by a
solenoid. The other corner of the trailing edge is positioned on the stapler throat where it is stapled. When the staple
job is done, the ejector motor drives the ejector belts which push the stapled document into the top of the output bin.
Then the tampers move to release the document into the bin. The sensor (bin full) on the left and right side of the
stapler detects if the media stacked on the bin is already full.
Appendix C: Theory of operation
796