Toshiba e-STUDIO350 Service Handbook page 264

2) Factors affecting toner consumption
Standard number of output pages per cartridge shows the average number of output pages under
the condition that the data of print ratio 6% is printed on the standard paper size (A4/LT) at a normal
temperature and humidity.
However, users do not always print under the above condition. As for the type of original, copy/print
mode and environment, each user has different tendency, and as a result, the number of output
pages per cartridge becomes different depending on the user.
The major factors affecting toner consumption are as follows:
- Original/Data coverage
- Original/Data density
- Original/Print mode
- Density setting
Also there are other factors in addition to the above, such as environment, individual difference of
equipment, difference in lot quality of materials, toner density and drum surface potential.
The general relations between the 4 factors mentioned in the previous page and toner consumption
per output page in the Copier Function are as follows:
Original coverage
TEXT
TEXT
/PHOTO
Original mode
e-STUDIO350/352/353/450/452/453
ERROR CODE AND SELF-DIAGNOSTIC MODE
PHOTO
Fig. 2-4 Factors affecting toner consumption and the tendency
2 - 244
Original density
Manual Manual Automatic
density density density
-5 -1
Density setting
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05/05
Manual Manual Manual
density density density
Center +1 +5