Ricoh FT 4015 - Page 45

2) Toner Supply Amount
- Method 1 -
Normally (if 0 or 1 is selected with SP30), the toner supply amount is
determined by the difference between the actual TD sensor voltage (V
T
) and
the target toner sensor voltage (V
TS
). The following table shows the
relationship between the sensor output and the toner supply motor on time
for each copy.
Toner Supply Level TD Sensor Voltage Level [V
T
] Toner Supply Motor On Time
1
V
TS
<
V
T
≤
V
TS
+ S/16
t
2
V
TS
+ S/16 < V
T
≤
V
TS
+ S/8
2 x t
3
V
TS
+ S/8 < V
T
≤
V
TS
+ S/4
4 x t
4
V
TS
+ S/4 < V
T
≤
V
TS
+ S/2
8 x t
5
V
TS
+ S/2 < V
T
≤
V
TS
+ 4S/5
16 x t
6 (Near End Level)
V
T
≥
V
TS
+ 4S/5
*10 seconds
7 (Toner End Level)
V
T
≥
V
TS
+ S
*10 seconds
The toner supply time unit "t" can be changed using SP31.
t = SP31 setting x 0.1 [second] (Default: 4 = 0.4 second)
S: TD Sensor Sensitivity (SP36)
* This value can be changed using SP35.
- Method 2 -
If 2 or 3 is selected with SP30, a fixed amount of toner is supplied when the
TD sensor voltage becomes higher than the target toner sensor voltage. The
amount of toner can be selected using SP32.
SP32 Setting
Toner Supply Motor On Time
(seconds)
Corresponding image area ratio
(%)
00.3 3.5
10.6 7
21.2 15
32.4 30
43.6 45
54.8 60
6
Stays on until the TD sensor
voltage becomes lower than the
target voltage.
7 0 (No toner supply) 0
Detailed
Descriptions
20 December 1996 TONER SUPPLY
2-31