Adjusting the Secondary Transfer Voltage

Chart printing

1. Click [Chart Print] to select [Full Range] or [Voltages Near Currently Configured Level], and then click [Print].
→ The chart will be printed.
Example chart when [Full Range] is selected

Description of the chart

(a) shows the level of the secondary transfer voltage. The setting range is from -20 to +20. A chart may range from a level greater than the lowest level (-20) to a level lower than the highest level (+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.
If you selected [Full Range], the color patch is printed with an increment level based on the status of the printer in use.
If you selected [Voltages Near Currently Configured Level], the color patch is printed using a single increment level in the range based on the voltages configured in the Printer.

How to use the chart to find the value of the secondary transfer voltage

If you selected [Full Range]
1. Use the cyan/magenta patch (b). Find the "*" of the minus side on the front side, and start from there.
2. Make a visual comparison going toward the plus side, and make note of the voltage where the color densities in the patch are equivalent (e.g. -8).
This value will be set for the front side.
3. If necessary, perform steps 1. and 2. to select the preferred voltage for the reverse side (marked with "**").
4. 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 selected [Voltages Near Currently Configured Level]
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.
1. Use the cyan/magenta patch (b). Find the "*" at the lowest minus value on the front side, and start from there.
2. Make a visual comparison going toward the plus side, and make note of the voltage where the color densities in the patch are equivalent (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 there are no equivalent color densities in the patch even after comparing the voltages up to the highest plus value, select [Full Range] and print the chart, and then set the voltage according to steps 1. to 4. of the procedure for when you selected [Full Range].
After that, select [Voltages Near Currently Configured Level] and print the chart, and then set the voltage according to steps 1. to 6. of the procedure for when you selected [Voltages Near Currently Configured Level].

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