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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 ................................................................................................................ 15
Figure 1-7 Fuser temperature control circuit ............................................................................................ 16
Figure 1-8 Laser/scanner system ........................................................................................................... 19
Figure 1-9 Image formation system ........................................................................................................ 21
Figure 1-10 Image formation process .................................................................................................... 22
Figure 1-11 Pre-exposure ..................................................................................................................... 23
Figure 1-12 Primary charging ............................................................................................................... 23
Figure 1-13 Laser-beam exposure ......................................................................................................... 24
Figure 1-14 Development ..................................................................................................................... 24
Figure 1-15 Primary transfer ................................................................................................................. 25
Figure 1-16 Secondary transfer ............................................................................................................ 25
Figure 1-17 Separation ....................................................................................................................... 26
Figure 1-18 Fusing .............................................................................................................................. 26
Figure 1-19 ITB cleaning ...................................................................................................................... 27
Figure 1-20 Drum cleaning .................................................................................................................. 27
Figure 1-21 Print-cartridge system ......................................
................................................................... 28
Figure 1-22 Developing-roller engagement and disengagement control ..................................................... 29
Figure 1-23 ITB unit ............................................................................................................................. 31
Figure 1-24 Three states of primary-transfer-roller engagement and disengagement ..................................... 33
Figure 1-25 ITB cleaning process .......................................................................................................... 35
Figure 1-26 Toner patterns for calibration .............................................................................................. 36
Figure 1-27 Switches and sensors for the pickup, feed, and delivery system (1 of 2) ................................... 38
Figure 1-28 Switches and sensors for the pickup, feed, and delivery system (2 of 2) ................................... 39
Figure 1-29 Motors and solenoids for the pickup, feed, and delivery system .............................................. 40
Figure 1-30 Three main units of the pickup, feed, and delivery system ....................................................... 41
Figure 1-31 Pick feed mechanism ......................................................................................................... 42
Figure 1-32 Cassette-pickup mechanism ................................................................................................ 43
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