HP Color 9850mfp Service Manual - Page 513

STACKER SECTION [1] Composition PS114 (stacker door PS) Stacker door Pusher plate M107 (pusher motor) PS112 (pusher PS) Vertical conveyance roller Q3224A PS110 PS108 (upper limit PS) (exit PS) 2 UNIT EXPLANATION Timing belt MS3 (stacker MS3) PS113 (stacker full PS) MS4 (stacker MS4) [2] Mechanisms Mechanism Conveyance *1 Booklet ejection *2 Upright stack Method Vertical conveyance roller Holder plate Pusher plate Exit tray Constant force spring *1 Booklet ejection Normally, the pusher plate is at the forward position to hold the booklet upright with it pressed against the exit tray pulled by the constant force spring. At this position, the pusher plate blocks the booklet ejection path. When the booklet ejection process starts, the M107 (pusher) moves the pusher plate back to the turnout position, opening the booklet ejection path. At this time, the booklet is stacked upright between the exit tray and the holder plate located at the upper limit position. The booklet conveyed from the press section is then ejected by the vertical conveyance roller. When the PS108 (exit) detects the trailing edge of the booklet, conveyance stops. After the specified period of time, the M106 (holder) PS111 Holder plate M106 (lower limit PS) (holder motor) rotates to move the holder plate downward. Furthermore, the pusher plate moves forward after the specified period of time to push the newly ejected booklet out of the booklet ejection path. Thus, the booklet is stacked upright between the pusher plate and the exit tray. When the specified time lapses after the pusher plate stops, the holder plate moves to the upper limit position. Exit tray Pusher plate Stacked booklets M107 (pusher motor) Holder plate Constant force spring M106 (holder motor) Booklet 2 - 11