feeds the paper and performs horizontal registration to align the starting position of the main scan for the second-side print. Then, the paper is fed into the product engine unit again. Figure 1-62 Duplexer reverse and feed operation Output roller Reverse position Re-pickup waiting position Intermediate output roller Fuser output sensor M1 SR1 SR2 Side misregistration sensor Table 1-22 Duplexer reverse and feed components Duplexer reverse and feed operation sequence The operational sequence of the reverse-and-feed operation is as follows: 1. The paper printed on the first side passes through the fuser. 2.
The DC controller feeds the paper until the trailing edge of paper reaches the reverse position after the fuser output sensor detects the trailing edge. 3. The duplex controller reverses the output roller and the intermediate output roller to feed the paper to the duplexer from the reverse position. 4. The duplex controller detects the image starting position according to the side misregistration sensor and feeds the paper to the re-pickup waiting position. 5. The duplex controller stops the paper temporarily at the re-pickup waiting position when the paper is standard size but shorter than Letter-R.
It feeds the paper to the product engine again if a print ENWW Duplexer 79 CL1 Component Signal M1 Duplex feed motor DUPLEX FEED MOTOR CONTROL signal CL1 Duplex feed clutch DUPLEX FEED CLUTCH signal SR1 Duplex reverse sensor DUPLEX FEED signal SR2 Duplex re-pickup sensor DUPLEX RE-PICKUP signal