Changing the Secondary Transfer Voltage

When image blurring occurs on the custom paper type more obviously than standard paper types, you can adjust the Secondary Transfer Voltage (the voltage that transfers toner to the paper).


Adjusting the Secondary Transfer Voltage may affect the settings in <Adj. Lead Edge Sec. Transfer Volt.>, <Correct Tail End Toner Application> and <Adjust Image Position>. Readjust these settings, if necessary. If you use the Media Librarian, you can adjust the secondary transfer voltage by using the Sensing Unit.

Changing the Secondary Transfer Voltage Automatically (Optional)

When the "Sensing Unit-B" is installed, you can automatically adjust the secondary transfer voltage.

Press <Change> for <Adj. Secondary Transfer Voltage>.

Press <Adjust Automatically>.

Select <Chart Print Type> and <Print Side>, and press <Next>.

Chart Print Type

Select <For Fine Adjustment> when making fine adjustments, and select <For Coarse Adjustment> when large adjustments are required.

Print Side

Select the side to adjust the secondary transfer voltage for.

Select the paper source with the custom paper type, and press <Start Adjusting>.

The adjustment result is displayed.

The chart are output.

Specifying/Outputting Chart

To adjust the secondary transfer voltage manually, output chart paper first.

Press <Change> for <Adj. Secondary Transfer Voltage>.

Press <Adjust Manually>.

Press <Chart Print Settings>.

Specify the chart settings, and press <Next>.

To perform fine adjustment, select <For Fine Adjustment>. If major adjustment is required, select <For Coarse Adjustment>.

If <For Fine Adjustment> is selected, charts with adjustment values in increments of ±1 are output.

If <For Coarse Adjustment> is selected, charts with adjustment values in increments corresponding to the status of the machine are output.

Select a print side to adjust secondary transfer voltage for.

In the following case, select <Front Side Only>.
－When <2nd Side of 2-Sided Page> is set to <On> for the custom paper type.

For information on the paper that can be used for chart when <Both Sides> is selected, see Paper Available for Two-Sided Copying/Two-Sided Printing.

Select the paper source with the custom paper type, and press <OK>.

Press <Chart Print>.

The chart is output.

Adjusting the Secondary Transfer Voltage Manually

You can adjust the secondary transfer voltage by using the output chart.

You can manually adjust the secondary transfer voltage by visually checking and determining the optimal patch from the chart.

Check the optimal patch from the output chart.

The numbers in magenta on the chart indicate the current settings.

Check the patches in the order from the negative values to the positive values, select the patch with density that seems even (-8 in the sample), compare it with the two patches above (-7 and -6 in the sample), and then select the optimal patch.

The single asterisk (*) printed near the value on the chart indicates the value for the front side.

If you cannot tell the difference among the selected three patches, select the one in the middle (-7 in the example).

On the <Adjust Secondary Transfer Voltage> screen, enter the value that is checked with the chart.

Select <Front Side> or <Back Side> and enter the value by using <-> or <+>.

In the following case, adjust the value of <Back Side>.

When <2nd Side of 2-Sided Page> is set to <On> for the custom paper type.

Press <OK>

	Adjustment in <-> Direction is Recommended for Following Cases	Adjustment in <+> Direction is Recommended for Following Cases
Basis Weight	Light (thin paper)	Heavy (thick paper)
Poor Images	Although the density in the high density areas is normal, tiny white spots may appear in the low density areas. White spots appear in high density areas. Enough toner is not applied in high density areas, and tiny dense spots appear. Dense spots may appear in low-density areas. In high-density images, streaks of uneven density may appear along the feeding direction.	High-density parts may not be sufficiently dense. High-density images may be uneven in density. Outlines in high density images may blur.