Kyocera FS1100 mono laser printer - Print Density Setttings ?

[Lindley]

Hi,

Our good old FS1100 printer just goes on and on, but the only downside is that the printed output ( mainly text)  is not very black ?

Even if we go between Eco and Normal modes, High Quality or Low its hard to see much difference, nothing like as black as the old HP LaserJets we used to have.

We have used genuine Kyocera toners and third party one with the same results.

Most other Kyocera printer manuals show a Print Density Setting box in the Properties settings when outputting, but its just not there on ours or mentioned in the user manual?

Does anyone know if it exists and assuming its somehow hidden how to invoke it  or if there are other ways to get a blacker text from it ?