Ricoh FT4227 Manual page 545

12 February 1992
9.3.2 Color Bias Adjustment (SP79)
When:
Purpose:
How:
SP79: Color Bias
Data Density
0 Normal
1 Darkest
2 Darker
3 Lighter
4 Lightest
1. Turn the main switch off.
2. While pressing both "1" and "3" on the operation panel number keys, turn
on the main switch.
NOTE: Release the number keys after confirming that the Call Service
indicator and the copy counter number "0" are blinking.
3. Enter "79" using the number keys and press the "#" key.
4. Change the setting displayed in the three digit indicator by the number
keys. Determine the new setting from the above table. Press the "#" key.
5. Turn the main switch off and on.
If color image density is improper compared with
black image density.
To improve color image density.
SP79 changes the development bias voltage for
color images.
Development Bias
Correction Voltage
±0 V
+40V
+20V
– 20V
– 40V
5-89
COPY QUALITY ADJUSTMENT