Bonjour
On my KM C451 I have apparent horizontal lines that cross the top half of the page, Both during printing and for scanning.
Ex : attached A4 scanned image.
I tried several things without result : Transfer belt, toner cartridges and image units cleaning, I've done Imaging Process adjust > Gradation Adjust > Gradation Mode.
Note that I have this problem regardless of the paper weight.
If you have ever encountered this problem can you please help me know what causes this.
thank you very much
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