HP Color 9850mfp Service Manual - Page 346
Stopper control, Alignment L control, Alignment HP sensor L PS724
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II UNIT EXPLANATION STACKER 3.2.2 Alignment L control (Q5687A only) Q5686A/Q5687A In the stitch-and-fold mode, folding mode and three-folding mode, the alignment of paper along the width is made by oscillating the alignment plate U and the alignment plate L. The alignment plate L is oscillated by rotating the alignment motor L (M716) in the normal or reverse direction. The home position of the alignment plate /L is detected by the alignment HP PS/L (PS724). A. Alignment L control In the folding, stitch-and-fold and three-folding modes, an finisher operation signal from the finisher starts to rotate the alignment motor L (M716) in the direction in which the alignment plate L closes. And the motor stops at the stand-by position in which the alignment plate L opens a little wider than the paper width. A specified period of time after the stacker entrance sensor (PS705) detects the trailing edge of paper, M716 rotates in the normal or reverse direction to oscillate the alignment plate L for proper alignment of paper. Alignment is made each time a sheet of paper is sent in. Stacker entrance sensor (PS705) Alignment HP sensor L (PS724) Alignment motor L OPEN (M716) CLOSE [1][2] [1] Finisher operation start signal ON [2] Standing by for paper size [3] [3] Alignment operation 3.2.3 Stopper control (Q5687A only) The longitudinal position of paper conveyed to the stacker varies for each of the staple, folding, stitch-andfold and the three-folding modes. The longitudinal position of paper is controlled by the two stoppers (booklet stopper and flat-stapling stopper). 2-16