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Carry out the following sequence of procedures. Terminate the sequence as soon as the problem is resolved.
(a) Adjust the image density.
To identify the affected color, print three full-page, solid-fill A3 or DLT sheets for each of cyan, yellow, magenta, and black.
In the [Machine: Image Quality] group on the [Adjustment Settings for Skilled Operators] menu, select 0201: [Adjust Image Density/ DEMS] and execute [Image Density Adjustment: Manual Execute].
Print the image. Has the problem been resolved?
Yes |
Finished! |
No |
Proceed to "(b) Adjust the transfer current.". |
(b) Adjust the transfer current.
To adjust the following settings, pre-register the type of paper in use as a custom paper. For details about registering custom papers, see "Registering a Custom Paper", Paper Settings.
In [Advanced Settings] for the custom paper you are using, adjust the paper transfer current.
<Printing in black and white>
Increase the value by -5 
A in 029: [Paper Transfer Current: B&W: Side 1] or 030: [Paper Transfer Current: B&W: Side 2].
Eg., -40 A to -45 A
<Printing in full color/Printing in full color including the clear toner while the special color is not set to high quality>
Increase the value by -5 A in 035: [Paper Transfer Current: FC: Side 1] or 036: [Paper Transfer Current: FC: Side 2].
Eg., -40 A to -45 A
<Printing in full color including the clear toner and the special color is set to high quality/printing in full color including the white toner>
Increase the value by -5 A in 037: [Paper Trnsfr. Current: FC: Side 1: Qual.] or 038: [Paper Trnsfr. Current: FC: Side 2: Qual.].
Eg., -40 A to -45 A
<Printing in special color only>
Increase the value by -5 A in 043: [Paper Transfer Current: Special: Side 1] or 044: [Paper Transfer Current: Special: Side 2].
Eg., -40 A to -45 A
Print the image. Has the problem been resolved?
Yes |
Finished! |
No |
Repeat Steps 1 to 2. If the problem persists even though you have repeated Steps 1 and 2 four times or more, go to the next step. |
Adjust the image transfer current.
<Printing in black and white>
Increase the value by 5 A in 022: [Image Transfer Current: B&W].
<Full color printing or full color + special color>
Increase the value by 5 A in 023: [Image Transfer Current: FC: Black], 024: [Image Transfer Current: FC: Cyan], 025: [Image Transfer Current: FC: Magenta], 026: [Image Transfer Current: FC: Yellow] or 027: [Image Transfer Current: FC: Special].
<Printing in special color only>
Increase the value by 5 A in 028: [Image Transfer Current: Special].
Print the image. Has the problem been resolved?
Yes |
Finished! |
No |
Repeat Steps 3 to 4. If the problem persists, go to the next step. |
When using paper with a thickness equivalent to Paper Weight 3 or below, proceed to (c) "Replenish the developer". When using paper with a thickness equivalent to Paper Weight 4 or above, set 049: [Textured Paper Mode] to [On].
Print the image. Has the problem been resolved?
Yes |
Finished! |
No |
Go to the next step. |
Check the paper transfer voltage applied when the Textured Paper mode is enabled.
<Printing in black and white>
Select 050: [Txt Ppr: Ppr Trns Voltage: B&W: Side 1] or 051: [Txt Ppr: Ppr Trns Voltage: B&W: Side 2].
<Printing in full color/Printing in full color including the clear toner while the special color is not set to high quality>
Select 052: [Txt Ppr: Paper Trnsf Voltage: FC: Side 1] or 053: [Txt Ppr: Paper Trnsf Voltage: FC: Side 2].
<Printing in full color including the clear toner and the special color is set to high quality/printing in full color including the white toner>
Select 054: [Txt. Pp.: Pp. Trn. Vl.: FC: Sd. 1: Qul.] or 055: [Txt. Pp.: Pp. Trn. Vl.: FC: Sd. 2: Qul.].
<Printing in special color only>
Select 056: [Txt Ppr: Paper Trnsf Voltage: S: Side 1] or 057: [Txt Ppr: Paper Trnsf Voltage: S: Side 2].
Adjust the paper transfer voltage applied when the Textured Paper mode is enabled.
<Printing in black and white>
Add 0.5 kV to the value checked in Step 7 and enter it in 050: [Txt Ppr: Ppr Trns Voltage: B&W: Side 1] or 051: [Txt Ppr: Ppr Trns Voltage: B&W: Side 2].
<Printing in full color/Printing in full color including the clear toner while the special color is not set to high quality>
Add 0.5 kV to the value checked in Step 7 and enter it in 052: [Txt Ppr: Paper Trnsf Voltage: FC: Side 1] or 053: [Txt Ppr: Paper Trnsf Voltage: FC: Side 2].
<Printing in full color including the clear toner and the special color is set to high quality/printing in full color including the white toner>
Add 0.5 kV to the value checked in Step 7 and enter it in 054: [Txt. Pp.: Pp. Trn. Vl.: FC: Sd. 1: Qul.] or 055: [Txt. Pp.: Pp. Trn. Vl.: FC: Sd. 2: Qul.].
<Printing in special color only>
Add 0.5 kV to the value checked in Step 7 and enter it in 056: [Txt Ppr: Paper Trnsf Voltage: S: Side 1] or 057: [Txt Ppr: Paper Trnsf Voltage: S: Side 2].
Print the image. Has the problem been resolved?
Yes |
Finished! |
No |
Repeat Steps 8 to 9. If the problem persists even though you have repeated Steps 7 and 8 six times, go to the next step. |
Adjust the paper transfer voltage applied when the Textured Paper mode is enabled.
<Printing in black and white>
Subtract 0.5 kV to the value checked in Step 7 and enter it in 050: [Txt Ppr: Ppr Trns Voltage: B&W: Side 1] or 051: [Txt Ppr: Ppr Trns Voltage: B&W: Side 2].
<Printing in full color/Printing in full color including the clear toner while the special color is not set to high quality>
Subtract 0.5 kV to the value checked in Step 7 and enter it in 052: [Txt Ppr: Paper Trnsf Voltage: FC: Side 1] or 053: [Txt Ppr: Paper Trnsf Voltage: FC: Side 2].
<Printing in full color including the clear toner and the special color is set to high quality/printing in full color including the white toner>
Subtract 0.5 kV to the value checked in Step 7 and enter it in 054: [Txt. Pp.: Pp. Trn. Vl.: FC: Sd. 1: Qul.] or 055: [Txt. Pp.: Pp. Trn. Vl.: FC: Sd. 2: Qul.].
<Printing in special color only>
Subtract 0.5 kV to the value checked in Step 7 and enter it in 056: [Txt Ppr: Paper Trnsf Voltage: S: Side 1] or 057: [Txt Ppr: Paper Trnsf Voltage: S: Side 2].
Print the image. Has the problem been resolved?
Yes |
Finished! |
No |
Repeat Steps 10 to 11. If the problem persists even though you have repeated Steps 7 and 8 six times, proceed to "(c) Replenish the developer". |
(c) Replenish the developer
In the [Machine: Maintenance] group on the [Adjustment Settings for Skilled Operators] menu, execute 0515: [Execute Developer Refreshing].
Print the image. Has the problem been resolved?
Yes |
Finished! |
No |
Reload with new paper. |
Print the image. Has the problem been resolved?
Yes |
Finished! |
No |
Replace the paper with smoother paper. |
Print the image. Has the problem been resolved?
Yes |
Finished! |
No |
Contact your service representative. |
If the problem occurs only if black is used when printing in full-color mode, carry out the procedure in see Low Image Density of Black Area.
After performing the solution, it is recommended to perform the color calibration of the external controller.
Special color mode is available for Pro C7100X, Pro C7110X, Pro C7100SX, and Pro C7110SX.
