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 1-4High-voltage power supply circuits

10

Figure 1-5Low-voltagepower-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 1-9Protective-glass cleaners (PGCs)

20

Figure 1-10

Image-formation system

21

Figure 1-11Image-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 1-24Developing-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

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HP CP4525DN Laser CC494A#ABA manual List of figures