Ricoh Robin Service Manual page 58

24 June 1994
6.6.2 Fixed Supply Mode (SP30 = 1)
The amount of toner supplied depends on the fixed toner supply ratio data
and the paper size data. The toner supply clutch on time in each copy cycle
is calculated as follows:
Toner Supply Clutch ON Time = T x P x 2 (pulses)
Where:
Fixed Toner Supply Ratio Data (SP32)
Data (SP32)
0
1
2
3
Paper Size Data
Paper size
A4R
B5R
A5R
10" x 14", 8
1/2
8 " x 13", 8 " x 13" (F4), 8" x 13"
1/2 1/4
8 " x 11", 8" x 10
1/2
8" x 10"
5
1/2
For example:
Toner Supply Clutch ON Time
TONER DENSITY DETECTION AND TONER SUPPLY
T = Fixed Toner Supply Ratio Data (SP32)
P = Paper Size Data
Toner supply ratio
7.0%
3.5%
10.5%
14.0%
B4
" x 14", 8 " x 14"
1/4
"
1/2
" x 8 "
1/2
The data of SP32 is set to "0".
The toner supply ratio is 7.0% and the toner
supply data is 2.
Paper size is A4R. The paper size data is 29.
= T x P x 2
= 2 x 29 x 2
=116 (pulses)
= 464 (msec.) (1 pulse = 4.0 msec.)
2-39
Toner supply ratio data
2
1
3
4
Paper size data
43
29
23
15
43
33
29
27
14