HP Color 9850mfp Service Manual - Page 353

II UNIT EXPLANATION Q5686A/Q5687A STACKER (2) Staple mode (A4, B5, 8.5 x 11 in size, with by-pass) 1. Paper conveyance of the first copy The paper of the first copy to be stapled is conveyed in the same manner as those other than A4, B5 and 8.5 x 11 in size. 2. Conveyance of the first and second sheets of paper of the second and succeeding copies A specified period of time after the stacker entrance sensor (PS705) detects the trailing edge of the last paper of the first copy, the stacker entrance motor (M713) stops. This prevents the paper of the second copy from being conveyed to the stacker before the stapling operation of the first copy is completed, and the first sheet of paper stands by on the by-pass route. A specified period of time after the finisher entrance sensor (PS704) detects the trailing edge of the second paper, the stacker entrance motor (M713) turns on to rotate at high speed. This allows the first and second sheets to be conveyed one upon another to the stacker. Finisher entrance sensor (PS704) Stacker entrance sensor (PS705) Stacker entrance motor High speed (M713) Low speed Stapler motor F (M714) Clincher motor F (M715) [1] [3] [4] [5] [2] [6] [1] Finisher operation start signal ON [2] Paper conveyance to the stacker at low speed [3] Last paper of the first copy [4] First paper of the second copy [5] Second paper of the second copy [6] Simultaneous conveyance of the first and second sheets of paper of the second copy 3. Conveyance of the third and succeeding sheets of paper of the second and succeeding copies The third and succeeding sheets of paper are conveyed one after another to the stacker in the same manner as the first copy. 2-23