Sleep mode ............................................................................................. 18 Power supply detection ............................................................................. 18 Image-formation system ........................................................................................................... 19 Print cartridge ......................................................................................................... 21 Memory tag ............................................................................................ 21 Cartridge-presence detection .....................................................................
21 Toner detection ........................................................................................ 22 Electrophotographic process ..................................................................................... 22 1. Primary charge (conditioning) ................................................................ 22 2. Laser-beam exposure (writing) ................................................................ 23 3. Developing .......................................................................................... 23 4. Transfer .............................................................................................. 24 5.
Separation .......................................................................................... 25 6. Fusing ................................................................................................. 25 Laser/scanner system .............................................................................................. 26 7. Drum cleaning ..................................................................................... 26 Laser/scanner assembly failure detection .................................................... 28 Safety .....................................................................................................
28 Pickup, feed, and delivery system ............................................................................................. 29 Pickup-and-feed block .............................................................................................. 33 Cassette pickup ........................................................................................ 34 Cassette media-size detection and cassette-present detection ......................... 35 Cassette lift-up operation ............................................................ 36 Cassette media-presence detection ..............................................
36 Tray 1 pickup .......................................................................................... 38 Multifeed prevention .................................................................. 37 Tray 1 media-presence detection ................................................. 39 Fusing-switchback and delivery block ........................................................................ 43 Fusing ..................................................................................................... 43 Pressure roller pressurization and depressurization control ............................
44 Switchback and delivery control ................................................................. 45 Face-down delivery ................................................................... 46 Face-up delivery ........................................................................ 47 Output bin media-full detection ................................................... 48 Duplex block ............................................................................ 49 Duplex side registration adjustment operation ............................... 49 Jam detection .........................................................................................................
52 No pick jam 1 ......................................................................................... 53 No pick jam 2 ......................................................................................... 54 No pick jam 3 ......................................................................................... 54 Feed stay jam .......................................................................................... 54 vi ENWW