Lexmark W820 Service Manual - Page 48

4025-Finisher Stapler Section The Stapler staples a bundle of paper in the Compiler Tray. When performing the stapling, the Stapler Unit starts moving along rails to the paper stapler position. The Stapler Unit moves to the front side when the right side of paper is stapled, or to the rear side when the left side of paper is stapled. When the Stapler Unit moves, the Stapler Traverse HP Sensor detects the absolute position of the Stapler Unit from the presence of a notch on the guide. After the Stapler Unit moves to the paper stapler position, the bundle of paper is stapled immediately in the Dual Stapling mode, but in the Corner Stapling mode the Stapler Unit tilts 45 degrees before the bundle of paper is stapled. As for the Stapler tilt angle in the Corner Stapling mode, the Stapler tilts +45 degrees when the Stapler Unit moves to the front side, but -45 degrees when it moves to the rear side. After the Stapler staples the bundle of paper, the Exit Roller rotates together with the Main Paddle to deliver the bundle of paper to the Stacker Tray via the Exit section. Note: For the Letter and A4 size paper, the stapler positions are specified. Stapler Components • The Stapler Unit staples a bundle of paper. • The Stapler Traverse HP Sensor detects the absolute position of the Stapler Unit from the presence of a notch on the guide rail. 1-36 Service Manual