Ricoh FT5535 Service Manual page 522

PROCESS CONTROL
6. PROCESS CONTROL
6.1 HALFTONE MODE
This new mode is added to the A204/A206/A207/A208/A210/A211.
If the user selects the halftone mode function on the operation panel, the
machine changes the exposure lamp voltage, the development bias, and the
drum charge voltage by the amounts shown below.
•
Exposure Lamp Voltage: –1.0 V
•
Development Bias: +80 V
•
Drum Charge Voltage: +300 V
The amount of voltgage indicated above will be applied to each manual I.D
level. Selecting halftone mode will automatically shift the unit from auto
imnage density mode to manual image density.
6.2 ADS CORRECTION
Five possible corrections can be selected, the base copier has only three.
ADS correction
ADS Density SP5-106
Setting Copy Density
(
0 Darkest
1 Darker
2 Normal
3 Lighter
(
4 Lightest
Where AR (ADS Ratio) = V
SM
Development Bias Correction Voltage
816 x (AR – 0.85) + 60
816 x (AR – 0.75)
816 x (AR – 0.85)
816 x (AR – 0.95)
816 x (AR – 0.85) – 60
(original)/V (pattern)
ADS ADS
1-19 A207/A208/A211