9. The duplex driver rotates the duplex re-pickup motor when it receives a duplex re-pickup command from the DC controller. The page is fed to the pre-feed sensor (PS102) of the product at the same product feed speed. 10. The duplex driver stops duplex re-pickup motor after a specified period from when the duplex media re-pickup sensor detects the trailing edge of the page. The DC controller determines a print error and delivers media to the delivery tray without duplex printing if it encounters following conditions after the page is picked up for the first side printing.
Figure 1-43 Duplexer block diagram Face-down delivery roller PS700 M1501 Duplex feed roller M1502 CW PS1501 CCW PS1502 PS1503 Side registration guide Side registration adjustment operation (DP) The product adjusts the side registration during a duplex print operation to align the center of the horizontal scanning on the second side with that of the print area on the photosensitive drum.
56 Chapter 1 Theory of operation ENWW Description Signal Driver DP reverse motor M1501 DUPLEX REVERSE MOTOR DRIVE signal DP driver DP re-pick motor M1502 DUPLEX RE-PICK MOTOR signal DP driver Face-up sensor PS1501 FACE-UPsignal DP driver DP media re-pick sensor PS1502 DUPLEX MEDIA RE-PICK signal DP driver Side registration guide home-position sensor PS1503 SIDE REGISTRATION GUIDE HOMEPOSITION signal DP driver