Streaks Appear

Troubleshoot by checking in the following order:
Are You Using Appropriate Paper?
Check whether the paper in the machine is usable, and replace it with appropriate paper, as needed.
Usable Paper
Loading Paper
Is the Platen Glass Dirty?
Clean the platen glass or rear side of the feeder if dirty.
Cleaning the Platen Glass
Cleaning the Feeder
Are you using paper containing much paper dust or other dust particles?
If you are using paper containing much paper dust or other dust particles, white spots may appear. If this is the case, set [Talc Paper Mode] to [On]. This may solve the problem.
Touch Panel Model
[Home] screen on the control panel [Menu] [Adjustment/Maintenance] [Adjust Image Quality] [Special Processing] [Talc Paper Mode] [On]
5 Lines LCD Model
 on the control panel  [Adjustment/Maintenance]    [Adjust Image Quality]    [Special Processing]    [Talc Paper Mode]    [On]  
*Setting to [On] may change the print quality.
Are You Using Rough Paper?
If so, specifying [On] for the paper source may improve the print results.
Touch Panel Model
[Home] screen on the control panel [Menu] [Adjustment/Maintenance] [Adjust Image Quality] [Special Processing] [Special Paper Processing]  [Rough Surface Paper Mode]  select the paper source [On]
5 Lines LCD Model
 on the control panel  [Adjustment/Maintenance]    [Adjust Image Quality]    [Special Processing]    [Special Paper Processing]    [Rough Surface Paper Mode]    Select the paper source    [On]  
* Specifying [On] in this setting may lead to slower print speeds or changes in the image quality.
Check the Remaining Amount of Toner in the Toner Cartridge.
Check the remaining amount of toner in the toner cartridge. Replace the toner cartridge if the remaining amount of toner is low.
Checking the Remaining Amount of Consumables
Replacing the Toner Cartridge
* Depending on the usage condition of the machine, the actual remaining amount of toner may be lower than indicated or the parts may be deteriorated (may be damaged or may malfunction). It is recommended to replace the toner cartridge with a new one.
Check the Remaining Amount of Toner in the Drum Cartridge.
Check the remaining lifetime of the drum cartridge. If the remaining lifetime is short, replace the drum cartridge.
Checking the Remaining Amount of Consumables
Replacing the Drum Cartridge
* Depending on the usage condition of the machine, the actual remaining amount of toner may be lower than indicated or the parts may be deteriorated (may be damaged or may malfunction). It is recommended to replace the drum cartridge with a new one.
Are You Using the Machine in a Humid Environment?
Setting [High Humidity Mode] to [On] may solve the problem.
Touch Panel Model
[Home] screen on the control panel [Menu] [Adjustment/Maintenance] [Adjust Image Quality] [Special Processing] [High Humidity Mode] [On]
5 Lines LCD Model
 on the control panel  [Adjustment/Maintenance]    [Adjust Image Quality]    [Special Processing]    [High Humidity Mode]    [On]  
* Setting this to [On] may blur images and text in an environment with low humidity.
Are You Using the Machine in an Environment with Sudden Temperature Changes?
Sudden temperature changes can create condensation, which can result in faded or blurry images and text. Setting [Control Condensation] to [On] may solve the problem.
Touch Panel Model
[Home] on the control panel [Menu] [Adjustment/Maintenance] [Maintenance] [Control Condensation] [On]
5 Lines LCD Model
 on the control panel  [Adjustment/Maintenance]    [Maintenance]    [Control Condensation]    [On]  
* During condensation removal, a blank sheet of paper may be output without being printed correctly. If you set this to [On], you can set whether to restrict printing.
Is the Machine Installed in a Location Subject to Strong Wind Such as from an Air Conditioner?
If so, adjust the air direction and volume of the air conditioner.
If that does not work, setting [Switch Paper Feed Method] to [Print Side Priority] may improve the problem.
Touch Panel Model
[Home] on the control panel [Menu] [Function Settings] [Common] [Paper Feed Settings] [Switch Paper Feed Method]  select the paper source [Print Side Priority]
5 Lines LCD Model
 on the control panel  [Function Settings]    [Common]    [Paper Feed Settings]    [Switch Paper Feed Method]    Select the paper source    [Print Side Priority]  
* When you select [Print Side Priority], the printing speed for 1-Sided printing will decrease.
Have You Cleaned the Fixing Assembly?
These symptoms may occur when the fixing assembly is dirty. In this case, clean the fixing assembly. Cleaning the Fixing Assembly
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