Color Detection - Ricoh FT4430 Service Manual

16 April '88
The ID sensor bias can be changed to adjust the color image density by
using SP Mode # 75 as follows:
Data ID Sensor Bias
o . .
1 . .
Normally, the data of SP Mode # 75
the threshold level for toner supply inhibition is increased. This causes the
toner density to become higher
control.)

5. Color Detection

Color Toner Sensors*
S - A S - B
OFF OFF
ON OFF
O F F O N
ON ON
Three actuators, each having a
between the different toner colors.
in the copier, the actuator activates the color toner sensors. The CPU
determines which color unit is instaIled based on the input from these two
sensors. (See the preceding table.)
* ON = actuator blocking the gap of the photo-interrupter.
590 volts
620 volts
Blue
Green
Red
Toner
Black
Blue
Green
Red
"O". When the data is changed to "1",
is
(See the section on color toner density
different shape, are used to distinguish
When a color development unit is installed
,
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