What is the status on Debian, etc?

Why should I not use the package from my distribution? Is is definitely bad?

Why does it tell me to use foo2zjs instead of foo2hiperc with no other details for my OKI? I assume it includes both translators, but it looks like a cut and paste error so I would like that clarified.

Is there a solution to the poor color reproduction? I get moire patterns, dots, etc. I am pretty sure it is not a fundamental flaw of the printer.

Download and Install

    Click the link, or cut and paste the whole command line below to download the driver.

            $ wget -O foo2zjs.tar.gz http://foo2zjs.rkkda.com/foo2zjs.tar.gz

    Now unpack it:

        Unpack:
            $ tar zxf foo2zjs.tar.gz
            $ cd foo2zjs

    Now compile and install it. The INSTALL file contains more detailed instructions; please read it now.

        Compile:
            $ make

        Get extra files from the web, such as .ICM profiles for color correction.
        Select the model number for your printer:
            $ ./getweb 301	# Get Oki C301dn .ICM files
            $ ./getweb c310	# Get Oki C310dn .ICM files
            $ ./getweb c511	# Get Oki C511dn .ICM files
            $ ./getweb c810	# Get Oki C810 .ICM files
            $ ./getweb 3100	# Get Oki C3100n .ICM files
            $ ./getweb 3200	# Get Oki C3200n .ICM files
            $ ./getweb 3300	# Get Oki C3300n .ICM files
            $ ./getweb 3400	# Get Oki C3400n .ICM files
            $ ./getweb 3530	# Get Oki C3530n MFP .ICM files
            $ ./getweb 5100	# Get Oki C5100n / C5150n .ICM files
            $ ./getweb 5200	# Get Oki C5200n .ICM files
            $ ./getweb 5500	# Get Oki C5500n .ICM files
            $ ./getweb 5600	# Get Oki C5600n .ICM files
            $ ./getweb 5800	# Get Oki C5800n .ICM files

            $ ./getweb 160	# Get Olivetti d-Color P160W .ICM files

        Install driver, foomatic XML files, and extra files:
            $ su			OR	$ sudo make install
            # make install

        (Optional) If you use CUPS, restart the spooler:
            # make cups			OR	$ sudo make cups

It is still unclear if foo2zjs.tar.gz contains foo2hiperc or what might be wrong with the drivers in a distribution.

This did guide me to solve the extremely poor color output. It made me look for well tempered screens. The standard setting is completely messed up, but selecting well tempered screens in 'adjustments' in cups gives what I expect as output. I am using Ghostscript 9.26. I am really happy this works now.

The "Halftone Algorithm" is "Default" which is also "Well Tempered Screens (best)".

I don't know why "Standard" (-q1) got selected for you.