Ricoh FT4460, Service Manual, Page: 93 / 413

28 February 1989
5.12 ID SENSOR SUPPLY CONTROL (Black only)
ID Sensor
Level Name
Toner Density
is High
Toner Supply
Level 1
Toner Supply
Level 2
Toner Supply
Level 3
Toner End
Supply
ID Sensor Error
Vsp (V)
0-0.50
0.51-0.60
0.61-0.70
0.71-0.90
0.91-2.49
Rate (%)
Toner Supply
of Vsp/Vsg
0-12.5
Toner Supply
stops
a)Black ID
12.6-15.0
Toner Mode
Supply Rate (1)
15.1-17.5 Twice of(1)
17.6-22.5
Four Times
of (1)
Toner Supply Rate
Is Four Times Of(1)
22.6-62.4
For 5 “Check”
Cycles Then Toner
End Condition Is
Detected
Goes to Fixed
62.5 or mode
Supply Mode
2.50 or mode
ID sensor Level is
made on the ratio
of Vsg and Vsp.
SP Mode No.31
Set Amount
0 1
2 3
Toner Supply Rate
15% 7% 30% 60%
Standard
Using SP Mode #35, the ID sensor can be set to check the pattern every 10
copies or every 5 copies.
Toner is supplied when Vsp is higher than 1/8 Vsg. The toner amount is
determined by the selected paper size, the Vsp/Vsg ratio and the toner supply
rate (as shown in the above table).
The toner supply rate can be changed using SP mode #31.
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