problem with black toner in konica c5501

[tamer samir]

I had a konica Minolta 5501 and there was a problem with the black color as shown in the attachments
Is there a solution to this problem ??
Thank you

[mthomasebs]

The picture doesn't show the fault very clearly.

What is it exactly? Do you mean the faint lines or the odd small spots?

[tamer samir]

The black in this picture is supposed to be 100% in design
But when printing appears so faintly

[Synthohol]

Do a toner refresh in expert adjustments in admin see if it improves.

[mircea]

I had a konica Minolta 5501 and there was a problem with the black color as shown in the attachments
Is there a solution to this problem ??
Thank you

as the others said try to do a toner refresh and check the values u get from gamma sensor too.
also how old are drums developer and charge units?
how are pattern bk at 255? can you post a picture of that too?