Sharp AR-RB1 Service Manual - Page 12

(4) Reverse finisher delivery operation A. When paper length is 249mm or less (letter size or less) (Both the paper input motor and upper turnover motor operate) The paper input motor and upper turnover motor are caused to turn in time with the copier processing speed, thus transporting the paper. When the trailing edge of the paper reaches a point 13mm from the copier POD off, the transport speed in RB1 is accelerated. Trailing edge of paper reaches point 13mm from POD off When the trailing edge of the paper reaches the upper reverse stop point, the motor stops. Processing speed Transport speed (high speed) Motor stop (paper stop) The upper turnover motor is caused to revolve in the paper delivery direction, and the paper is discharged. Just before the leading edge of the paper reaches the first roller of the finisher, the transport speed decreases. After the trailing edge of the paper passes the delivery roller, the upper turnover motor stops. Transport speed (high speed) Finisher No. 1 roller Transport speed (low speed) Motor stop (discharge complete) Table showing relation between the processing speed and the transport speed in RB1 Copier processing speed 58.5 117 140 RB1 transport speed (high) 195 550 550 RB1 transport speed (Finisher speed) 195 450 550 Unit: mm/s Sensor input, motor output, solenoid output timing is as below. POD (Paper exit sensor) BPPD1 (Transport sensor 1) BPOD (Paper-out sensor) BIM (Paper-in motor) Process speed BRM (Direction of paper-in) (Upper reverse (Direction of paper-out) motor) BGSOL (Gate solenoid) High speed Finisher speed High speed B. When the paper length is 250mm or more (B5R or more) (The paper input motor, upper turnover motor and lower turnover motor all operate.) Other than this, it is controlled by the same conditions as for letter-size or less. AR-RB1 DESCRIPTION OF OPERATION 4 - 5