Adjusting the Secondary Transfer Voltage
Chart printing
1. Click [Chart Print] to select [Full Range], and then click [Print].
→ The chart will be printed.
Description of the chart
(a) shows the level of the secondary transfer voltage. The setting range is from -20 to +20. "*" indicates the front side, and "**" indicates the reverse side.
(b) shows a color patch with cyan and magenta each at 100%. The color varies according to the level of the secondary transfer voltage.
(c) shows a black patch at 50%. The color varies according to the level of the secondary transfer voltage.
(d) shows a black patch at 100%. The color varies according to the level of the secondary transfer voltage.
How to use the chart to find the value of the secondary transfer voltage
1. Use the cyan/magenta patch (b). Find the "*" in the -20 position on the front side, and start from there.
2. Go down the chart (-19, -18, etc.) and make a visual comparison to find the equivalent color density and voltage (e.g. -8).
3. Compare this patch with the next two patches of higher value (e.g. -8, -7, and -6).
4. Compare the patches in (b), (c), and (d) for the value selected in step 3, and then select the preferred voltage value for the output image.
If the differences among the three rows are not clear, select the center voltage value, which is -7 in this example.
5. If necessary, perform steps 1 through 4 to select the preferred voltage for the reverse side (marked with "**").
6. Enter the selected value for the front side and the value for the reverse side in the Media Librarian screen, and then click [OK].
If you select [Voltages Near Currently Configured Level] when printing a chart, the printing range is -5 to +5 the voltage value set on the printer. When using this chart, perform steps 1 through 6 starting from the lowest voltage.
Adjustment of the secondary transfer voltage is beneficial in the following cases
There are uneven glossy areas in high density images
Toner is splattered around the edges of high density images
Tiny white spots that look like bubbles appear
Small white spots appear
USRM2-9625-00