Canon ir C5030 Shading Black Text

[maximilian500]

Hello everybody,
I have been here for months, a problem with which I annoy myself. It is an IR C5030i which only appears in black text shadow behind the text. This problem now almost every day on. All other colors do not have this problem. I have already been replaced:

-ITB foil and cleaning blade
-black drum
-cleaned Laser Unit

Can these errors also come from old toner?

I would not like to replace the very expensive development unit.

In the appendix the pictures to the problem.

[copier tech]

Are you using Genuine Canon toner?

[maximilian500]

Yes I use Canon Genuine Toner. But I do not know how old the toner is.

[copier tech]

Unusual to have "old" toner causing an issue, unless it has been stored above or below the recommended temperature conditions.

However looking at your sample I cant see any issues with the print quality!?

[maximilian500]

When you look at the blue Box in the Text: Bei Problemen mit organisatorischen Angelegenheiten... you will see strayed toner around the letters.

[maximilian500]

The error is particularly noticeable with the letter e

[maximilian500]

I have shown the error here again more clearly. It is as if dust were around the letters. I changed today the black toner against new. Also interesting is that the error no longer occurs on the whole page.
Here is an example of how the error looks. Here is an example of how the error looks. Especially at the top line, the dust around the letters can be seen.

[guitar9199]

How many copies/prints on this machine?

[maximilian500]

Machine has 216000 printouts.
Is it possible to readjust the laser? I know this only at Konica, which goes there in the service menu. But how is this done with Canon?
I have ordered a new complete fixing unit. It's just funny that only black is smeared from the fuser.

[duwaynebrooks]

Looks like a font issue.

Have you tried changing dpi ?