Toner Life End - Brother DCP-7030 Service Manual

3.4.2 Toner Life End

A new toner cartridge can print in standard toner approximately 1,500, with high capacity
toner, approximately 2,600 and with starter toner approximately 1,000 in the case of A4 or
Letter size single-sided pages in accordance with ISO/IEC 19752.
The message "Toner Life End" is displayed by the number of cumulative rotation of the
developer roller reaching the rated value to wear on the surface of the develop roller and
deterioration of the toner seal, inhibiting printing operations. The upper limit of the rotation
rate of the develop roller is as follows. For standard toner 27,000 rotations (1,800 pages x 15
rotations). For high-capacity toner 45,000 rotations (3,000 pages x 15 rotations). For starter
toner 18,000 rotations (1.200 pages x 15 rotations).
The following graph shows the number of printable pages in the case of A4 printing.
Memo :
The number of rotation of the developer roller per page is as follows.
• One printed page only or the first page of continuous printing = 15 rotations
• After 2 pages for continuous printing = 4.3 rotations
Number of idling rotation when the machine is turned ON = 8.5 rotations
If a drum discharge is detected, drum life ends.
■ Standard toner cartridge* Approximately 1500 pages
Page/job
Cartridge life
Cartridge life+ON/OFF
Toner empty (A)
Toner empty (B)
Toner empty (C)
Toner empty (D)
Toner empty (E)
Cartridge life = 15a x
Cartridge life+ON/OFF = ( 15a x
Cartridge life (Mechanical limit) :
A: in accordance with ISO/IEC 19752
B: 20% less coverage than A
C: 40% less coverage than A
D: 60% less coverage than A
E: 80% less coverage than A
20,000
18,000
16,000
14,000 14 000
12,000
10,000
8,000 ,
6,000
4,000
2,000
0
1
1 2 3 4
1,800 2,798 3,432 3,871
1,149 1,942 2,523 2,967
1,500 1,500 1,500 1,500
1,875 1,875 1,875 1,875
2,500 2,500 2,500 2,500
3,750 3,750 3,750 3,750
7,500 7,500 7,500 7,500
1800 / ( 4.3 x (a - 1) + 15 )
1800 ) / ( 4.3 x (a - 1) +
1800 ( 1Page/job )
Cartridge life
Cartridge life+ON/OFF
Toner empty (A)
Toner empty (B)
Toner empty (C)
Toner empty (D)
Toner empty (E)
2 3 4
5 6 7 8
4,193 4,438 4,632 4,789
3,317 3,600 3,834 4,030
1,500 1,500 1,500 1,500
1,875 1,875 1,875 1,875
2,500 2,500 2,500 2,500
3,750 3,750 3,750 3,750
7,500 7,500 7,500 7,500
a : P age/ j ob
15 + 8.5 )
5 6 7 8
Page / Job
Fig. Ref. 2-14
Ref. 2-15
9 10 11 12
4,919 5,028 5,121 5,201
4,197 4,341 4,466 4,576
1,500 1,500 1,500 1,500
1,875 1,875 1,875 1,875
2,500 2,500 2,500 2,500
3,750 3,750 3,750 3,750
7,500 7,500 7,500 7,500
9 10 11 12
Confidential