Brother International HL 5030 Service Manual - Page 240
<How to calculate drum unit life>, If printing 1 per job with cold start
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CHAPTER 7 SOFTWARE SERVICE SUPPORT **Printing time for 1 page/job in discontinuous printing = 12 seconds (Page counter reduced by the number of drum rotations) = (Time of motor rotation) ÷ (12 sec.) Example: Cold start (Idling for 5 sec.) 1 page/job 2 pages/job 16 pages/job (5 + 8.4) / 8.4 = 1.60 (5 + 8.4 + 3.6) / 8.4 = 2.02 (5 + 8.4 + 3.6 x 15) / 8.4 = 8.02 Hot start 8.4 / 8.4 = 1 (8.4 + 3.6) / 8.4 = 1.43 (8.4 + 3.6 x 15) / 8.4 = 7.43 Page counter 1 2 16 If printing 1 page per job with cold start, the drum unit life is decreased earlier. 7-6
CHAPTER 7 SOFTWARE SERVICE SUPPORT
7-6
<How to calculate drum unit life>
**Printing time for 1 page/job in discontinuous printing = 12 seconds
(Page counter reduced by the number of drum rotations) = (Time of motor rotation) รท (12 sec.)
Example:
Cold start (Idling for 5 sec.)
Hot start
Page
counter
1 page/job
(5 + 8.4) / 8.4 = 1.60
8.4 / 8.4 = 1
1
2 pages/job
(5 + 8.4 + 3.6) / 8.4 = 2.02
(8.4 + 3.6) / 8.4 = 1.43
2
16 pages/job
(5 + 8.4 + 3.6 x 15) / 8.4 = 8.02
(8.4 + 3.6 x 15) / 8.4 = 7.43
16
If printing 1 page per job with cold start, the drum unit life is decreased earlier.