HP LASERJET ENTERPRISE M775dn - Page 29

List of figures
Figure 1-1 Relationship between the main product systems ......................................................................... 2
Figure 1-2 Engine-control system ............................................................................................................. 8
Figure 1-3 DC controller block diagram ................................................................................................... 9
Figure 1-4 Motors ............................................................................................................................... 11
Figure 1-5 Fans .................................................................................................................................. 13
Figure 1-6 Fuser-control circuit .............................................................................................................. 14
Figure 1-7 Fuser-heater control circuit .................................................................................................... 15
Figure 1-8 Low-voltage power supply .................................................................................................... 18
Figure 1-9 High-voltage power supply ................................................................................................... 21
Figure 1-10 Laser/scanner system ......................................................................................................... 23
Figure 1-11 Electrophotographic process block diagram ......................................................................... 25
Figure 1-12 Electrophotographic process drive system ............................................................................. 26
Figure 1-13 Image formation process .................................................................................................... 27
Figure 1-14 Pre-exposure ..................................................................................................................... 28
Figure 1-15 Primary charging ............................................................................................................... 28
Figure 1-16 Laser beam exposure ......................................................................................................... 29
Figure 1-17 Developing ....................................................................................................................... 30
Figure 1-18 Primary transfer ................................................................................................................. 31
Figure 1-19 Secondary transfer ............................................................................................................ 31
Figure 1-20 Separation ....................................................................................................................... 32
Figure 1-21 Fusing .............................................................................................................................. 32
Figure 1-22 ITB cleaning ...................................................................................................................... 33
Figure 1-23 Drum cleaning .................................................................................................................. 33
Figure 1-24 Print cartridge block diagram .............................................................................................. 34
Figure 1-25 Developing unit engagement and disengagement control ....................................................... 36
Figure 1-26 ITB unit block diagram ....................................................................................................... 37
Figure 1-27
Primary transfer roller engagement and disengagement control ............................................... 38
Figure 1-28 ITB cleaning mechanism ..................................................................................................... 40
Figure 1-29 Color-misregistration control ............................................................................................... 41
Figure 1-30 Pickup, feed, and delivery system ........................................................................................ 44
Figure 1-31 Pickup, feed, and delivery system blocks .............................................................................. 45
Figure 1-32 Photo sensors (paper path) ................................................................................................. 45
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