SP2-xxx Drum
D093/D094 2-60 SM Appendix
2927
Toner (Near) End Detection DFU
These SP's set the levels for the toner near-end and toner end levels.
1 Near End Level
Sets the level for toner near end detection. (Vsp/Vsg = Vend).
[0.140 to 0.275/0.145/0.005 V]
2 Toner End Level
Sets the Vsp/Vsg level for toner end detection. The ID sensor must detect this
value three times in succession to detect toner end. The machine stops when
toner end is detected.
[0.150 to 300/0.165/0.005 V]
2928 Toner End Recovery
Recovery starts after the toner cartridge is replaced when a toner-end condition
exists.
[0.130 to 0.215/0.145/0.005 V]
In the toner-end recovery process:
The machine writes an ID sensor pattern on the surface of the drum.
The ID sensor reads the density of the ID sensor pattern and converts it to an
electrical signal (Vsp).
The machine compares the Vsp value with Vsg, which is read from the bare
sursection of the drum (Vsg/Vsg=Vref)
If Vsp/Vsg < Vref (the value of this SP setting), recovery is completed and
the machine goes back to normal operation.
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