The Printed Paper Has Vertical Streaks
Perform one of the following solutions according to the cause.
<Cause 1> Depending on the paper type or the operating environment, vertical streaks may appear on the printed paper.
Solution 1
Replace the paper with new paper in an unopened package.
Solution 2
Perform the following procedure in the printer driver.
1.
Display the [Finishing] tab.
2.
Click [Advanced Settings].
3.
Set [Special Print Adjustment C] to [On].
You can specify the same setting from the printer's control panel.
Resetting the setting to [Off] due to change in paper type or operating environment may also avoid vertical streaks appearing on the printed paper. In this case, reset the setting to [Off].
If you specify this setting, printing speed drops.
Solution 3
Perform the following procedure in the printer driver.
1.
Display the [Finishing] tab.
2.
Click [Advanced Settings].
3.
Set [Special Print Adjustment A] to [Mode 1].
If the problem is not solved, specify [Mode 2].
If the problem is not solved, specify [Mode 3].

If the problem is not solved, specify [Mode 4].
You can specify the same setting from the printer's control panel.
Resetting the setting to [Off] due to change in paper type or operating environment may also avoid vertical streaks appearing on the printed paper.
In this case, reset the setting to [Off].
Vertical streaks are alleviated by specifying a setting between [Mode 1] and [Mode 4]. However, this decreases print density compared to when [Off] is specified.
This may also make outlines appear to be blurred or slightly jagged.
If outlines are jagged, select [Off].
<Cause 2> The toner cartridge was replaced, or the printer was not printed for a long period of time.
Solution
Perform the following procedure in the printer driver.
1.
Display the [Finishing] tab.
2.
Click [Advanced Settings].
3.
Set [Special Print Adjustment B] to [Mode 1].

If the problem is not solved, specify [Mode 2].

If the problem is not solved, specify [Mode 3].
Selecting [Off] may also avoid vertical streaks appearing on the printed paper.
In this case, reset the setting to [Off].
If you specify this setting, printing speed may drop.
<Cause 3> Damp and thin paper (16.0 to 19.8 lb Bond (60 to 74 g/m²)) is used.
Solution
In the printer driver, set [Paper Type] to [Plain L] and [Special Print Mode C] to [On].
[Special Print Mode C] can also be set using the printer's control panel.
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