Ricoh D093 Service Manual page 564

SP2-xxx Drum
2208 Toner Supply Setting
1 Gain
This SP setting determines the supply GAIN for toner supply based on the
readings of the ID sensor (Vsp/Vsg). This value is the threshold setting used
calculate toner supply with the toner supply coefficient set with SP2208-2.
The Vsp/Vsg value is used to fetch the corresponding value from the GAIN
lookup table.
Increasing the value of this setting raises GAIN for image density control.
[0 to 9/1/1]
0: Lowest, 5: Medium, 9: Very High
2 Supply Capacity
This SP sets the coefficient for toner supply control.
This coefficient is used in a calculation with GAIN value, and width of the
paper to determine the amount of toner supply.
Increasing the value of this setting raises the amount of toner applied to
control image density.
[0 to 3.5 / 1.7 / /0.1 Steps]
3 Toner Supply Mode
Sets the toner supply mode.
This SP sets the toner supply mode for toner supply control. This determines
the supply GAIN based on the ID sensor reading of the ID sensor pattern.
This determines the supply GAIN for the fixed toner supply mode for 3%
coverage and 6% coverage.
When fixed toner supply is selected, the image density is determined by the
rate of coverage in the image passing through the machine.
If the density of the image on the paper passing through is higher than the
rate set for the fixed toner supply mode, the image will be lighter.
[0 to 2/ 0 / 1]
0: Detect Mode (uses ID sensor)
1: Fixed Mode (%3). Coverage fixed at 3% (medium)
2: Fixed Mode (6%). Coverage fixed at 6% (darker)
If the ID sensor is damaged and cannot be replaced immediately, set either
SP to "1". The operator can continue to use the machine until a new ID
D093/D094 2-42 SM Appendix