Latent-image formation block ..................................................................... 29 Pre-exposure ............................................................................. 29 Primary charging ...................................................................... 29 Laser beam exposure ................................................................. 30 Developing block ..................................................................................... 31 Transfer block .......................................................................................... 32 Primary transfer .........................................................................
32 Secondary transfer .................................................................... 32 Separation ............................................................................... 33 Fusing block ............................................................................................ 33 ITB cleaning block .................................................................................... 34 Drum cleaning block ................................................................................. 34 Print cartridges ........................................................................................................
35 Memory tag ............................................................................................ 36 Cartridge presence detection ..................................................................... 36 Toner level detection ................................................................................. 36 Cartridge life detection ............................................................................. 36 Developing unit engagement and disengagement control .............................. 36 ITB unit ..................................................................................................................
38 Primary transfer roller engagement and disengagement control ...................... 39 ITB unit presence detection ........................................................................ 40 ITB cleaning mechanism ............................................................................ 40 Calibration ............................................................................................................. 41 Color-misregistration control ...................................................................... 42 Environment change control .......................................................................
43 Image stabilization control ........................................................................ 43 Image density control (DMAX) ..................................................... 43 Image halftone control (DHALF) ................................................... 43 Pickup, feed, and delivery system ............................................................................................. 44 Photo sensors .......................................................................................................... 46 Motors and solenoids ..............................................................................................
47 Pickup and feed block ............................................................................................. 47 Tray 2 cassette pickup .............................................................................. 48 Tray 2 cassette multiple-feed prevention ...................................................... 49 Tray 2 cassette media-size detection and Tray 2 cassette-presence detection ... 50 Tray 2 cassette lift-up operation .................................................................. 51 Cassette media-presence detection .............................................................
53 Tray 1 (MP tray) paper pickup .................................................................................. 53 Tray 1 (MP tray) last-paper detection ......................................................................... 54 Paper feed ............................................................................................................. 55 Skew-feed prevention ................................................................................ 57 vi ENWW