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List of figures
Figure 1-1 Relationship between the main product systems ............................................................................. 2
Figure 1-2 Engine-control system ...................................................................................................................... 4
Figure 1-3 DC controller block diagram .............................................................................................................. 5
Figure 1-4 High-voltage power supply circuits ................................................................................................. 10
Figure 1-5 Low-voltage power-supply circuit .................................................................................................... 12
Figure 1-6 Fuser components .......................................................................................................................... 14
Figure 1-7 Fuser temperature-control circuit .................................................................................................... 15
Figure 1-8 Laser/scanner system ..................................................................................................................... 18
Figure 1-9 Protective-glass cleaners (PGCs) ................................................................................................... 20
Figure 1-10 Image-formation system ............................................................................................................... 21
Figure 1-11 Image-formation drive system ....................................................................................................... 22
Figure 1-12 Image-formation process .............................................................................................................. 23
Figure 1-13 Pre-exposure ................................................................................................................................ 24
Figure 1-14 Primary charging ........................................................................................................................... 24
Figure 1-15 Laser-beam exposure ................................................................................................................... 25
Figure 1-16 Development ................................................................................................................................. 25
Figure 1-17 Primary transfer ............................................................................................................................ 26
Figure 1-18 Secondary transfer ........................................................................................................................ 26
Figure 1-19 Separation ..................................................................................................................................... 27
Figure 1-20 Fusing ........................................................................................................................................... 27
Figure 1-21 ITB cleaning .................................................................................................................................. 28
Figure 1-22 Drum cleaning ............................................................................................................................... 28
Figure 1-23 Print-cartridge system ................................................................................................................... 29
Figure 1-24 Developing-roller engagement and disengagement control ......................................................... 30
Figure 1-25 ITB unit .......................................................................................................................................... 31
Figure 1-26 Three states of primary-transfer-roller engagement and disengagement ..................................... 33
Figure 1-27 ITB cleaning process .................................................................................................................... 34
Figure 1-28 Toner patterns for calibration ........................................................................................................ 35
Figure 1-29 Paper path .................................................................................................................................... 37
Figure 1-30 Switches and sensors for the pickup, feed, and delivery system ................................................. 38
Figure 1-31 Motors and solenoids for the pickup, feed, and delivery system .................................................. 39
Figure 1-32 Three main units of the pickup, feed, and delivery system ........................................................... 40
Figure 1-33 Pickup-and-feed unit ..................................................................................................................... 41
Figure 1-34 Cassette-pickup mechanism ......................................................................................................... 42
ENWW xxi