C7085-90921 Chapter 4 Printer maintenance 81
Drum life under different circumstances
The following graph shows the approximate life of the imaging drum for different types and sizes of
print jobs.
Figure 4-1 Imaging drum life
Note When printing black pages, there is a wider range of variation in pages/drum. The drum life will be well
below 25,000 images if only short monochrome jobs are printed.
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
1 2 5 10 15 20 2000
Pages/Drum (K)
Pages/job
A-4 simplex monochrome
A-4 duplex monochrome
A-4 simplex color
A4 duplex color
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