Toner Cartridge; Toner Life End Mode - Brother HL-5240 Service Manual

3.4

Toner Cartridge

Develops the electrostatic latent image on the exposure drum with toner and forms the visible
image.
3.4.1

Toner life end mode

A new toner cartridge can print approximately 3,500 (standard toner) or approximately 7,000
(high yield toner) A4 or Letter size single-sided pages at 5% coverage. In the case of low-duty
printing, "Toner Life End" is indicated by lighting Toner LED (HL-5240/5250DN) or "TONER
LIFE END" message appears on the LCD panel (HL-5270DN/5280DW) before the toner runs
out because the developer roller surface or other toner sealing is worn out due to a rotation of
the rollers. The upper limit of the drum rotation is 46,200 = 4,200 sheets x 11 rotations
(standard toner), 92,400 = 8,400 sheets x 11 rotations (high yield toner).
The following graph shows the number of printable pages in the case of A4 printing.
HL-5240/5250DN/5270DN/5280DW(Standard (3.5K) toner)
Page/job
4,200
Cartridge life
2,310
Cartridge life+ON/OFF
3,500
Toner empty (5%)
4,375
Toner empty (4%)
5,833
Toner empty (3%)
8,750
Toner empty (2%)
17,500 17,500 17,500 17,500 17,500 17,500 17,500 17,500 17,500 17,500 17,500 17,500
Toner empty (1%)
Cartridge life = 11a x 4200 / ( 3.6 x (a - 1) + 11 )
Cartridge life+ON/OFF = ( 11a x 4200 ) / ( 3.6 x (a - 1) + 11 + 9 )
Cartridge life (Mechanical limit) :
20,000
18,000
16,000
14,000
12,000
10,000
8,000
6,000
4,000
2,000
0
1
1 2 3 4
6,329 7,615 8,477
3,915 5,096 6,000
3,500 3,500 3,500
4,375 4,375 4,375
5,833 5,833 5,833
8,750 8,750 8,750
4200 ( 1page / job )
Cartridge life
Cartridge life+ON/OFF
Toner empty (5%)
Toner empty (4%)
Toner empty (3%)
Toner empty (2%)
Toner empty (1%)
2 3 4
HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
5 6 7
9,094 9,559 9,920 10,210 10,447 10,645 10,813 10,957
6,715 7,295 7,774
3,500 3,500 3,500
4,375 4,375 4,375
5,833 5,833 5,833
8,750 8,750 8,750
a : Page / job
5 6 7 8
Page / Job
2-17
8 9 10 11
8,177 8,520 8,817 9,075
3,500 3,500 3,500 3,500
4,375 4,375 4,375 4,375
5,833 5,833 5,833 5,833
8,750 8,750 8,750 8,750
9 10 11
Confidential
12
9,302
3,500
4,375
5,833
8,750
12