Toner Cartridge; Toner Empty Mode - Brother HL-6050 Service Manual

2.5

Toner Cartridge

Develops the electrostatic latent image on the photosensitive drum with toner and forms the
visible image.
2.5.1

Toner empty mode

The life of the toner cartridge is 7,500 pages at the 5% coverage. In the case of low-duty
printing, however, "TONER EMPTY" is indicated on the LCD before toner runs out because
the developer roller surface or other toner sealing is worn out due to rotation of the drum and
the magnet roller. The upper limit of the drum rotation is 27,000.
The following graph shows the number of printable pages in the case of A4 printing.
Page / job
Cartridge life
9,000 13,500 16,200 18,000 19,286 20,250 21,000 21,600 22,091 22,500 22,846 23.143
Toner empty (5%)
7,500
Toner empty (4%)
9,375
Toner empty (3%)
12,500 12,500 12,500 12,500 12,500 12,500 12,500 12,500 12,500 12,500 12,500 12,500
Toner empty (2%)
18,750 18,750 18,750 18,750 18,750 18,750 18,750 18,750 18,750 18,750 18,750 18,750
Toner empty (1%)
37,500 37,500 37,500 37,500 37,500 37,500 37,500 37,500 37,500 37,500 37,500 37,500
*Toner cartridge life = 6.0a x 9000 / (2.45 x (a-1) + 6.0)
a: Page / job
*Toner empty = 7500 x 5 / b
b: Coverage (%)
40,000
35,000
30,000
25,000
20,000
15,000
10,000
5,000
0
1
Most of all customers print higher than 3 pages / job and 3% coverage.
Therefore, it won't be a problem, even if the toner cartridge life is stopped at 27,000 drum
rotations.
1 2 3 4
7,500 7,500 7,500
9,375 9,375 9,375
2 3 4
5 6 7
7,500 7,500 7,500 7,500
9,375 9,375 9,375 9,375
5 6 7 8
Page / Job
3-27
HL-6050/6050D/6050DN SERVICE MANUAL
8 9 10 11
7,500 7,500 7,500
9,375 9,375 9,375
Cartridge life
Toner empty (1%)
Toner empty (2%)
Toner empty (3%)
Toner empty (4%)
Toner empty (5%)
9 10 11
12
7,500
9,375
12